/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:55:35,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:55:35,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:55:35,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:55:35,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:55:35,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:55:35,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:55:35,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-13 18:55:35,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:55:35,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:55:35,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:55:35,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:55:35,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:55:35,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:55:35,318 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:55:35,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:55:35,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:55:35,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:55:35,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:55:35,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:55:35,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:55:35,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:55:35,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:55:35,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:55:35,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:55:35,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:55:35,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:55:35,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:55:35,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:55:35,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:55:35,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:55:35,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:55:35,635 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:55:35,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-07-13 18:55:35,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f03f04e/71c071ddf3874e03a37fcd836ac62f50/FLAGf8bbe9a82 [2021-07-13 18:55:36,277 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:55:36,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-07-13 18:55:36,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f03f04e/71c071ddf3874e03a37fcd836ac62f50/FLAGf8bbe9a82 [2021-07-13 18:55:36,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6f03f04e/71c071ddf3874e03a37fcd836ac62f50 [2021-07-13 18:55:36,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:55:36,758 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:55:36,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:55:36,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:55:36,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:55:36,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:55:36" (1/1) ... [2021-07-13 18:55:36,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2c3d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:36, skipping insertion in model container [2021-07-13 18:55:36,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:55:36" (1/1) ... [2021-07-13 18:55:36,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:55:36,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:55:36,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 18:55:37,423 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2021-07-13 18:55:37,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:55:37,457 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:55:37,464 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 18:55:37,496 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2021-07-13 18:55:37,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:55:37,582 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:55:37,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37 WrapperNode [2021-07-13 18:55:37,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:55:37,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:55:37,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:55:37,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:55:37,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:55:37,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:55:37,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:55:37,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:55:37,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... [2021-07-13 18:55:37,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:55:37,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:55:37,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:55:37,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:55:37,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:55:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:55:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:55:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-07-13 18:55:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:55:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:55:37,786 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:55:38,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:55:38,164 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-07-13 18:55:38,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:55:38 BoogieIcfgContainer [2021-07-13 18:55:38,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:55:38,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:55:38,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:55:38,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:55:38,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:55:36" (1/3) ... [2021-07-13 18:55:38,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121676ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:55:38, skipping insertion in model container [2021-07-13 18:55:38,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:55:37" (2/3) ... [2021-07-13 18:55:38,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121676ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:55:38, skipping insertion in model container [2021-07-13 18:55:38,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:55:38" (3/3) ... [2021-07-13 18:55:38,170 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-07-13 18:55:38,174 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:55:38,174 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:55:38,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-07-13 18:55:38,175 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:55:38,196 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,196 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,196 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,196 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,207 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,209 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,210 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,210 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,210 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,210 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,210 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,212 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,213 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:55:38,220 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-13 18:55:38,236 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-13 18:55:38,248 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:55:38,248 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:55:38,249 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:55:38,249 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:55:38,249 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:55:38,249 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:55:38,249 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:55:38,249 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:55:38,257 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 143 transitions, 308 flow [2021-07-13 18:55:38,419 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5107 states, 5099 states have (on average 2.7834869582271033) internal successors, (14193), 5106 states have internal predecessors, (14193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 5107 states, 5099 states have (on average 2.7834869582271033) internal successors, (14193), 5106 states have internal predecessors, (14193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 18:55:38,445 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:38,446 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:38,446 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:38,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:38,453 INFO L82 PathProgramCache]: Analyzing trace with hash 918719424, now seen corresponding path program 1 times [2021-07-13 18:55:38,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:38,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920908238] [2021-07-13 18:55:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:38,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:38,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920908238] [2021-07-13 18:55:38,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920908238] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:38,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:38,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:55:38,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964482224] [2021-07-13 18:55:38,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:55:38,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:38,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:55:38,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:55:38,943 INFO L87 Difference]: Start difference. First operand has 5107 states, 5099 states have (on average 2.7834869582271033) internal successors, (14193), 5106 states have internal predecessors, (14193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:39,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:39,407 INFO L93 Difference]: Finished difference Result 6833 states and 18642 transitions. [2021-07-13 18:55:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-13 18:55:39,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-13 18:55:39,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:39,453 INFO L225 Difference]: With dead ends: 6833 [2021-07-13 18:55:39,453 INFO L226 Difference]: Without dead ends: 5725 [2021-07-13 18:55:39,454 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:55:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-07-13 18:55:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 4445. [2021-07-13 18:55:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4440 states have (on average 2.713963963963964) internal successors, (12050), 4444 states have internal predecessors, (12050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 12050 transitions. [2021-07-13 18:55:39,686 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 12050 transitions. Word has length 48 [2021-07-13 18:55:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:39,686 INFO L482 AbstractCegarLoop]: Abstraction has 4445 states and 12050 transitions. [2021-07-13 18:55:39,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 12050 transitions. [2021-07-13 18:55:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:55:39,689 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:39,690 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:39,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:55:39,690 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1316640901, now seen corresponding path program 1 times [2021-07-13 18:55:39,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:39,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804675552] [2021-07-13 18:55:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:39,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:39,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804675552] [2021-07-13 18:55:39,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804675552] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:39,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:39,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:55:39,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687354793] [2021-07-13 18:55:39,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:55:39,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:39,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:55:39,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:55:39,867 INFO L87 Difference]: Start difference. First operand 4445 states and 12050 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:40,082 INFO L93 Difference]: Finished difference Result 6161 states and 16560 transitions. [2021-07-13 18:55:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:55:40,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-13 18:55:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:40,105 INFO L225 Difference]: With dead ends: 6161 [2021-07-13 18:55:40,105 INFO L226 Difference]: Without dead ends: 5231 [2021-07-13 18:55:40,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:55:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2021-07-13 18:55:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 5061. [2021-07-13 18:55:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 5057 states have (on average 2.716630413288511) internal successors, (13738), 5060 states have internal predecessors, (13738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 13738 transitions. [2021-07-13 18:55:40,356 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 13738 transitions. Word has length 54 [2021-07-13 18:55:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:40,361 INFO L482 AbstractCegarLoop]: Abstraction has 5061 states and 13738 transitions. [2021-07-13 18:55:40,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:40,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 13738 transitions. [2021-07-13 18:55:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-07-13 18:55:40,385 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:40,385 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:40,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:55:40,385 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:40,392 INFO L82 PathProgramCache]: Analyzing trace with hash -116808969, now seen corresponding path program 1 times [2021-07-13 18:55:40,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:40,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520299304] [2021-07-13 18:55:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:40,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:40,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520299304] [2021-07-13 18:55:40,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520299304] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:40,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:40,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 18:55:40,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887709128] [2021-07-13 18:55:40,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-13 18:55:40,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:40,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-13 18:55:40,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-13 18:55:40,485 INFO L87 Difference]: Start difference. First operand 5061 states and 13738 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:40,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:40,522 INFO L93 Difference]: Finished difference Result 1928 states and 5048 transitions. [2021-07-13 18:55:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 18:55:40,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-07-13 18:55:40,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:40,531 INFO L225 Difference]: With dead ends: 1928 [2021-07-13 18:55:40,531 INFO L226 Difference]: Without dead ends: 1928 [2021-07-13 18:55:40,532 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:55:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-07-13 18:55:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1928. [2021-07-13 18:55:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1926 states have (on average 2.6209761163032192) internal successors, (5048), 1927 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 5048 transitions. [2021-07-13 18:55:40,571 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 5048 transitions. Word has length 66 [2021-07-13 18:55:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:40,572 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 5048 transitions. [2021-07-13 18:55:40,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5048 transitions. [2021-07-13 18:55:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:55:40,577 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:40,578 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:40,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:55:40,578 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash -55997949, now seen corresponding path program 1 times [2021-07-13 18:55:40,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:40,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549643597] [2021-07-13 18:55:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:41,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:41,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549643597] [2021-07-13 18:55:41,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549643597] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:41,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:41,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-07-13 18:55:41,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662149667] [2021-07-13 18:55:41,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-13 18:55:41,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:41,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-13 18:55:41,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-07-13 18:55:41,381 INFO L87 Difference]: Start difference. First operand 1928 states and 5048 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:43,242 INFO L93 Difference]: Finished difference Result 1975 states and 5135 transitions. [2021-07-13 18:55:43,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-13 18:55:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:55:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:43,250 INFO L225 Difference]: With dead ends: 1975 [2021-07-13 18:55:43,250 INFO L226 Difference]: Without dead ends: 1975 [2021-07-13 18:55:43,251 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1579.4ms TimeCoverageRelationStatistics Valid=552, Invalid=1610, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:55:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2021-07-13 18:55:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1953. [2021-07-13 18:55:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1951 states have (on average 2.610456176319836) internal successors, (5093), 1952 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 5093 transitions. [2021-07-13 18:55:43,289 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 5093 transitions. Word has length 94 [2021-07-13 18:55:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:43,289 INFO L482 AbstractCegarLoop]: Abstraction has 1953 states and 5093 transitions. [2021-07-13 18:55:43,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 5093 transitions. [2021-07-13 18:55:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:55:43,293 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:43,293 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:43,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:55:43,294 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:43,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:43,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1534210897, now seen corresponding path program 1 times [2021-07-13 18:55:43,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:43,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89000183] [2021-07-13 18:55:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:43,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:43,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89000183] [2021-07-13 18:55:43,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89000183] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:43,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:43,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:55:43,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382550930] [2021-07-13 18:55:43,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:55:43,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:43,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:55:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:55:43,857 INFO L87 Difference]: Start difference. First operand 1953 states and 5093 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:45,095 INFO L93 Difference]: Finished difference Result 3181 states and 8005 transitions. [2021-07-13 18:55:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:55:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:55:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:45,137 INFO L225 Difference]: With dead ends: 3181 [2021-07-13 18:55:45,138 INFO L226 Difference]: Without dead ends: 3181 [2021-07-13 18:55:45,138 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1071.0ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:55:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-07-13 18:55:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2250. [2021-07-13 18:55:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 2248 states have (on average 2.5604982206405693) internal successors, (5756), 2249 states have internal predecessors, (5756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 5756 transitions. [2021-07-13 18:55:45,192 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 5756 transitions. Word has length 94 [2021-07-13 18:55:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:45,193 INFO L482 AbstractCegarLoop]: Abstraction has 2250 states and 5756 transitions. [2021-07-13 18:55:45,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 5756 transitions. [2021-07-13 18:55:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:55:45,201 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:45,201 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:45,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:55:45,201 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:45,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1800387145, now seen corresponding path program 2 times [2021-07-13 18:55:45,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:45,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742742630] [2021-07-13 18:55:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:45,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:45,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742742630] [2021-07-13 18:55:45,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742742630] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:45,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:45,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:55:45,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264003332] [2021-07-13 18:55:45,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:55:45,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:45,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:55:45,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:55:45,914 INFO L87 Difference]: Start difference. First operand 2250 states and 5756 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:46,798 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:55:47,227 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:55:47,379 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:55:47,576 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:55:47,797 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:55:47,974 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:55:48,112 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:55:48,305 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 18:55:48,671 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:55:48,816 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:55:49,146 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:55:49,406 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:55:49,607 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:55:49,901 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:55:50,284 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:55:50,646 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 18:55:50,775 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:55:51,006 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 18:55:51,175 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:55:51,370 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:55:51,594 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 18:55:51,724 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 18:55:51,953 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 18:55:52,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:52,080 INFO L93 Difference]: Finished difference Result 5114 states and 12603 transitions. [2021-07-13 18:55:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-13 18:55:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:55:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:52,093 INFO L225 Difference]: With dead ends: 5114 [2021-07-13 18:55:52,093 INFO L226 Difference]: Without dead ends: 5114 [2021-07-13 18:55:52,094 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5511.9ms TimeCoverageRelationStatistics Valid=1020, Invalid=2640, Unknown=0, NotChecked=0, Total=3660 [2021-07-13 18:55:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2021-07-13 18:55:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 2972. [2021-07-13 18:55:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.594612794612795) internal successors, (7706), 2971 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7706 transitions. [2021-07-13 18:55:52,164 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7706 transitions. Word has length 94 [2021-07-13 18:55:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:52,164 INFO L482 AbstractCegarLoop]: Abstraction has 2972 states and 7706 transitions. [2021-07-13 18:55:52,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7706 transitions. [2021-07-13 18:55:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:55:52,169 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:52,169 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:52,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:55:52,170 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash 75957407, now seen corresponding path program 3 times [2021-07-13 18:55:52,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:52,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946035148] [2021-07-13 18:55:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:52,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:52,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946035148] [2021-07-13 18:55:52,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946035148] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:52,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:52,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:55:52,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143468674] [2021-07-13 18:55:52,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:55:52,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:52,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:55:52,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:55:52,850 INFO L87 Difference]: Start difference. First operand 2972 states and 7706 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:53,793 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:55:53,949 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:55:54,085 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:55:54,259 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:55:54,411 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:55:54,608 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:55:54,820 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:55:55,078 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:55:55,508 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:55:55,651 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:55:55,840 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:55:56,054 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:55:56,217 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:55:56,372 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:55:56,511 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:55:56,751 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:55:57,093 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 18:55:57,338 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 18:55:57,614 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 18:55:57,886 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:55:58,088 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:55:58,390 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:55:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:55:58,505 INFO L93 Difference]: Finished difference Result 5535 states and 13421 transitions. [2021-07-13 18:55:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 18:55:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:55:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:55:58,515 INFO L225 Difference]: With dead ends: 5535 [2021-07-13 18:55:58,516 INFO L226 Difference]: Without dead ends: 5535 [2021-07-13 18:55:58,517 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 4984.5ms TimeCoverageRelationStatistics Valid=968, Invalid=2572, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 18:55:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2021-07-13 18:55:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 2979. [2021-07-13 18:55:58,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2977 states have (on average 2.5935505542492443) internal successors, (7721), 2978 states have internal predecessors, (7721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 7721 transitions. [2021-07-13 18:55:58,585 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 7721 transitions. Word has length 94 [2021-07-13 18:55:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:55:58,585 INFO L482 AbstractCegarLoop]: Abstraction has 2979 states and 7721 transitions. [2021-07-13 18:55:58,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:55:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 7721 transitions. [2021-07-13 18:55:58,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:55:58,590 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:55:58,590 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:55:58,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:55:58,590 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:55:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:55:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1701147319, now seen corresponding path program 4 times [2021-07-13 18:55:58,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:55:58,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437271843] [2021-07-13 18:55:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:55:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:55:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:55:59,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:55:59,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437271843] [2021-07-13 18:55:59,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437271843] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:55:59,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:55:59,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:55:59,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795347919] [2021-07-13 18:55:59,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:55:59,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:55:59,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:55:59,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:55:59,305 INFO L87 Difference]: Start difference. First operand 2979 states and 7721 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:00,218 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:56:00,382 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:00,522 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:56:00,702 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:56:00,855 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:56:01,058 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:56:01,541 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:56:01,687 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:56:01,878 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:02,065 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:56:02,279 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:56:02,613 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:56:02,791 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:56:02,993 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:56:03,447 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:56:03,573 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-07-13 18:56:03,750 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:56:03,876 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:56:04,060 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 18:56:04,194 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:56:04,354 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:04,535 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 18:56:04,663 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 18:56:04,844 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:56:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:04,972 INFO L93 Difference]: Finished difference Result 5646 states and 13664 transitions. [2021-07-13 18:56:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 18:56:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:04,982 INFO L225 Difference]: With dead ends: 5646 [2021-07-13 18:56:04,982 INFO L226 Difference]: Without dead ends: 5646 [2021-07-13 18:56:04,983 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 5085.3ms TimeCoverageRelationStatistics Valid=918, Invalid=2504, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 18:56:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2021-07-13 18:56:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 2993. [2021-07-13 18:56:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2991 states have (on average 2.5914409896355735) internal successors, (7751), 2992 states have internal predecessors, (7751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 7751 transitions. [2021-07-13 18:56:05,059 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 7751 transitions. Word has length 94 [2021-07-13 18:56:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:05,059 INFO L482 AbstractCegarLoop]: Abstraction has 2993 states and 7751 transitions. [2021-07-13 18:56:05,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 7751 transitions. [2021-07-13 18:56:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:05,064 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:05,065 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:05,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:56:05,065 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash 153159991, now seen corresponding path program 5 times [2021-07-13 18:56:05,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:05,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930490900] [2021-07-13 18:56:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:05,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:05,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930490900] [2021-07-13 18:56:05,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930490900] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:05,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:05,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:05,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312816643] [2021-07-13 18:56:05,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:05,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:05,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:05,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:05,778 INFO L87 Difference]: Start difference. First operand 2993 states and 7751 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:06,684 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:56:06,846 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:06,991 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:56:07,181 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:56:07,591 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:07,735 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:56:08,018 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:08,176 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:56:08,385 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:56:08,589 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:08,811 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:56:09,002 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:56:09,258 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:56:09,645 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:56:09,928 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:56:10,080 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:56:10,248 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 18:56:10,382 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:56:10,530 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:10,695 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 18:56:10,820 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 18:56:10,982 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:56:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:11,110 INFO L93 Difference]: Finished difference Result 5757 states and 13907 transitions. [2021-07-13 18:56:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 18:56:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:11,120 INFO L225 Difference]: With dead ends: 5757 [2021-07-13 18:56:11,120 INFO L226 Difference]: Without dead ends: 5757 [2021-07-13 18:56:11,121 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 4811.1ms TimeCoverageRelationStatistics Valid=870, Invalid=2436, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 18:56:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2021-07-13 18:56:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 3000. [2021-07-13 18:56:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2998 states have (on average 2.590393595730487) internal successors, (7766), 2999 states have internal predecessors, (7766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 7766 transitions. [2021-07-13 18:56:11,204 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 7766 transitions. Word has length 94 [2021-07-13 18:56:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:11,204 INFO L482 AbstractCegarLoop]: Abstraction has 3000 states and 7766 transitions. [2021-07-13 18:56:11,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:11,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 7766 transitions. [2021-07-13 18:56:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:11,212 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:11,212 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:11,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:56:11,212 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:11,213 INFO L82 PathProgramCache]: Analyzing trace with hash 468309919, now seen corresponding path program 6 times [2021-07-13 18:56:11,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:11,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525272466] [2021-07-13 18:56:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:11,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:11,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525272466] [2021-07-13 18:56:11,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525272466] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:11,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:11,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:11,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871138099] [2021-07-13 18:56:11,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:11,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:11,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:11,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:11,809 INFO L87 Difference]: Start difference. First operand 3000 states and 7766 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:13,530 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:56:13,748 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:13,969 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:56:14,130 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:56:14,321 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:56:14,687 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:56:14,955 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:56:15,082 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:56:15,232 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 18:56:15,365 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:56:15,495 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:56:15,638 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 18:56:15,764 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 18:56:15,910 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:56:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:16,036 INFO L93 Difference]: Finished difference Result 5383 states and 13144 transitions. [2021-07-13 18:56:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 18:56:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:16,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:16,044 INFO L225 Difference]: With dead ends: 5383 [2021-07-13 18:56:16,044 INFO L226 Difference]: Without dead ends: 5383 [2021-07-13 18:56:16,045 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 3812.9ms TimeCoverageRelationStatistics Valid=824, Invalid=2368, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 18:56:16,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-07-13 18:56:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 3007. [2021-07-13 18:56:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3005 states have (on average 2.589351081530782) internal successors, (7781), 3006 states have internal predecessors, (7781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 7781 transitions. [2021-07-13 18:56:16,106 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 7781 transitions. Word has length 94 [2021-07-13 18:56:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:16,106 INFO L482 AbstractCegarLoop]: Abstraction has 3007 states and 7781 transitions. [2021-07-13 18:56:16,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 7781 transitions. [2021-07-13 18:56:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:16,112 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:16,112 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:16,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:56:16,112 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:16,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1831797541, now seen corresponding path program 2 times [2021-07-13 18:56:16,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:16,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852606543] [2021-07-13 18:56:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:16,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:16,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852606543] [2021-07-13 18:56:16,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852606543] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:16,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:16,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:16,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691825791] [2021-07-13 18:56:16,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:16,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:16,793 INFO L87 Difference]: Start difference. First operand 3007 states and 7781 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:19,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:19,481 INFO L93 Difference]: Finished difference Result 4707 states and 12180 transitions. [2021-07-13 18:56:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 18:56:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:19,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:19,489 INFO L225 Difference]: With dead ends: 4707 [2021-07-13 18:56:19,490 INFO L226 Difference]: Without dead ends: 4707 [2021-07-13 18:56:19,491 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 2082.0ms TimeCoverageRelationStatistics Valid=1035, Invalid=3935, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 18:56:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2021-07-13 18:56:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4465. [2021-07-13 18:56:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4463 states have (on average 2.625588169392785) internal successors, (11718), 4464 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 11718 transitions. [2021-07-13 18:56:19,572 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 11718 transitions. Word has length 94 [2021-07-13 18:56:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:19,573 INFO L482 AbstractCegarLoop]: Abstraction has 4465 states and 11718 transitions. [2021-07-13 18:56:19,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 11718 transitions. [2021-07-13 18:56:19,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:19,581 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:19,581 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:19,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 18:56:19,581 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash -607570563, now seen corresponding path program 7 times [2021-07-13 18:56:19,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:19,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606693820] [2021-07-13 18:56:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:19,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:19,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606693820] [2021-07-13 18:56:19,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606693820] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:19,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:19,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:56:19,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765795802] [2021-07-13 18:56:19,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:56:19,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:19,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:56:19,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:56:19,916 INFO L87 Difference]: Start difference. First operand 4465 states and 11718 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:20,914 INFO L93 Difference]: Finished difference Result 5765 states and 14662 transitions. [2021-07-13 18:56:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-13 18:56:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:20,923 INFO L225 Difference]: With dead ends: 5765 [2021-07-13 18:56:20,923 INFO L226 Difference]: Without dead ends: 5765 [2021-07-13 18:56:20,924 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 897.0ms TimeCoverageRelationStatistics Valid=311, Invalid=745, Unknown=0, NotChecked=0, Total=1056 [2021-07-13 18:56:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2021-07-13 18:56:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 4465. [2021-07-13 18:56:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4463 states have (on average 2.625588169392785) internal successors, (11718), 4464 states have internal predecessors, (11718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 11718 transitions. [2021-07-13 18:56:21,004 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 11718 transitions. Word has length 94 [2021-07-13 18:56:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:21,004 INFO L482 AbstractCegarLoop]: Abstraction has 4465 states and 11718 transitions. [2021-07-13 18:56:21,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 11718 transitions. [2021-07-13 18:56:21,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:21,012 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:21,012 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:21,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 18:56:21,012 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1698963207, now seen corresponding path program 8 times [2021-07-13 18:56:21,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:21,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649344378] [2021-07-13 18:56:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:21,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:21,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649344378] [2021-07-13 18:56:21,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649344378] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:21,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:21,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:56:21,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358288352] [2021-07-13 18:56:21,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:56:21,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:21,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:56:21,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:56:21,372 INFO L87 Difference]: Start difference. First operand 4465 states and 11718 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:22,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:22,562 INFO L93 Difference]: Finished difference Result 5671 states and 14273 transitions. [2021-07-13 18:56:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:56:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:22,569 INFO L225 Difference]: With dead ends: 5671 [2021-07-13 18:56:22,569 INFO L226 Difference]: Without dead ends: 5671 [2021-07-13 18:56:22,569 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1010.1ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:56:22,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2021-07-13 18:56:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 4415. [2021-07-13 18:56:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4413 states have (on average 2.624291864944482) internal successors, (11581), 4414 states have internal predecessors, (11581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 11581 transitions. [2021-07-13 18:56:22,652 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 11581 transitions. Word has length 94 [2021-07-13 18:56:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:22,652 INFO L482 AbstractCegarLoop]: Abstraction has 4415 states and 11581 transitions. [2021-07-13 18:56:22,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 11581 transitions. [2021-07-13 18:56:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:22,664 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:22,664 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:22,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 18:56:22,664 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:22,664 INFO L82 PathProgramCache]: Analyzing trace with hash 947344799, now seen corresponding path program 9 times [2021-07-13 18:56:22,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:22,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785860280] [2021-07-13 18:56:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:22,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:22,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785860280] [2021-07-13 18:56:22,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785860280] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:22,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:22,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:56:22,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031869792] [2021-07-13 18:56:22,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:56:22,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:22,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:56:22,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:56:22,983 INFO L87 Difference]: Start difference. First operand 4415 states and 11581 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:23,931 INFO L93 Difference]: Finished difference Result 5560 states and 13903 transitions. [2021-07-13 18:56:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:56:23,932 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:23,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:23,939 INFO L225 Difference]: With dead ends: 5560 [2021-07-13 18:56:23,939 INFO L226 Difference]: Without dead ends: 5560 [2021-07-13 18:56:23,940 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 884.1ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:56:23,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2021-07-13 18:56:24,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 4365. [2021-07-13 18:56:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4363 states have (on average 2.6229658491863397) internal successors, (11444), 4364 states have internal predecessors, (11444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 11444 transitions. [2021-07-13 18:56:24,037 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 11444 transitions. Word has length 94 [2021-07-13 18:56:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:24,037 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 11444 transitions. [2021-07-13 18:56:24,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 11444 transitions. [2021-07-13 18:56:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:24,045 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:24,045 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:24,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 18:56:24,045 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:24,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:24,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1528985735, now seen corresponding path program 10 times [2021-07-13 18:56:24,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:24,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247400423] [2021-07-13 18:56:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:24,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:24,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247400423] [2021-07-13 18:56:24,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247400423] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:24,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:24,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:56:24,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101814897] [2021-07-13 18:56:24,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:56:24,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:56:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:56:24,378 INFO L87 Difference]: Start difference. First operand 4365 states and 11444 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:25,426 INFO L93 Difference]: Finished difference Result 5669 states and 14136 transitions. [2021-07-13 18:56:25,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:56:25,426 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:25,434 INFO L225 Difference]: With dead ends: 5669 [2021-07-13 18:56:25,434 INFO L226 Difference]: Without dead ends: 5669 [2021-07-13 18:56:25,435 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 941.3ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:56:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-07-13 18:56:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4265. [2021-07-13 18:56:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4265 states, 4263 states have (on average 2.620220501993901) internal successors, (11170), 4264 states have internal predecessors, (11170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4265 states to 4265 states and 11170 transitions. [2021-07-13 18:56:25,556 INFO L78 Accepts]: Start accepts. Automaton has 4265 states and 11170 transitions. Word has length 94 [2021-07-13 18:56:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:25,556 INFO L482 AbstractCegarLoop]: Abstraction has 4265 states and 11170 transitions. [2021-07-13 18:56:25,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4265 states and 11170 transitions. [2021-07-13 18:56:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:25,563 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:25,563 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:25,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 18:56:25,563 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:25,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:25,563 INFO L82 PathProgramCache]: Analyzing trace with hash 824365575, now seen corresponding path program 11 times [2021-07-13 18:56:25,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:25,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841777212] [2021-07-13 18:56:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:25,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:25,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841777212] [2021-07-13 18:56:25,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841777212] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:25,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:25,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:56:25,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266338] [2021-07-13 18:56:25,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:56:25,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:25,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:56:25,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:56:25,892 INFO L87 Difference]: Start difference. First operand 4265 states and 11170 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:26,797 INFO L93 Difference]: Finished difference Result 5689 states and 14140 transitions. [2021-07-13 18:56:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:56:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:26,805 INFO L225 Difference]: With dead ends: 5689 [2021-07-13 18:56:26,806 INFO L226 Difference]: Without dead ends: 5689 [2021-07-13 18:56:26,806 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 813.4ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:56:26,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-07-13 18:56:26,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 4215. [2021-07-13 18:56:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4215 states, 4213 states have (on average 2.618798955613577) internal successors, (11033), 4214 states have internal predecessors, (11033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 11033 transitions. [2021-07-13 18:56:26,880 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 11033 transitions. Word has length 94 [2021-07-13 18:56:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:26,880 INFO L482 AbstractCegarLoop]: Abstraction has 4215 states and 11033 transitions. [2021-07-13 18:56:26,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 11033 transitions. [2021-07-13 18:56:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:26,886 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:26,887 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:26,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 18:56:26,887 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash -849567073, now seen corresponding path program 12 times [2021-07-13 18:56:26,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:26,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749853530] [2021-07-13 18:56:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:27,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:27,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749853530] [2021-07-13 18:56:27,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749853530] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:27,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:27,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:56:27,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448332607] [2021-07-13 18:56:27,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:56:27,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:27,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:56:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:56:27,239 INFO L87 Difference]: Start difference. First operand 4215 states and 11033 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:28,207 INFO L93 Difference]: Finished difference Result 4932 states and 12481 transitions. [2021-07-13 18:56:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-13 18:56:28,207 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:28,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:28,214 INFO L225 Difference]: With dead ends: 4932 [2021-07-13 18:56:28,215 INFO L226 Difference]: Without dead ends: 4932 [2021-07-13 18:56:28,215 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 870.9ms TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:56:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2021-07-13 18:56:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 3925. [2021-07-13 18:56:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 3923 states have (on average 2.634208513892429) internal successors, (10334), 3924 states have internal predecessors, (10334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 10334 transitions. [2021-07-13 18:56:28,282 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 10334 transitions. Word has length 94 [2021-07-13 18:56:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:28,283 INFO L482 AbstractCegarLoop]: Abstraction has 3925 states and 10334 transitions. [2021-07-13 18:56:28,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 10334 transitions. [2021-07-13 18:56:28,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:28,291 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:28,291 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:28,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 18:56:28,292 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:28,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1428423783, now seen corresponding path program 13 times [2021-07-13 18:56:28,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:28,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454279280] [2021-07-13 18:56:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:28,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:28,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454279280] [2021-07-13 18:56:28,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454279280] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:28,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:28,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:28,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574984926] [2021-07-13 18:56:28,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:28,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:28,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:28,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:28,983 INFO L87 Difference]: Start difference. First operand 3925 states and 10334 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:30,175 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-07-13 18:56:30,301 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:56:30,464 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:56:30,636 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 18:56:30,840 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 18:56:30,995 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:56:31,214 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 18:56:31,535 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:31,813 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:32,014 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:32,228 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:56:32,392 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2021-07-13 18:56:32,739 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-07-13 18:56:32,986 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-07-13 18:56:33,148 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:33,423 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-07-13 18:56:33,566 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:33,793 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2021-07-13 18:56:34,135 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 18:56:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:34,233 INFO L93 Difference]: Finished difference Result 6639 states and 16701 transitions. [2021-07-13 18:56:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 18:56:34,233 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:34,243 INFO L225 Difference]: With dead ends: 6639 [2021-07-13 18:56:34,243 INFO L226 Difference]: Without dead ends: 6639 [2021-07-13 18:56:34,245 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 4833.3ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 18:56:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2021-07-13 18:56:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 3754. [2021-07-13 18:56:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3752 states have (on average 2.651652452025586) internal successors, (9949), 3753 states have internal predecessors, (9949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 9949 transitions. [2021-07-13 18:56:34,339 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 9949 transitions. Word has length 94 [2021-07-13 18:56:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:34,339 INFO L482 AbstractCegarLoop]: Abstraction has 3754 states and 9949 transitions. [2021-07-13 18:56:34,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 9949 transitions. [2021-07-13 18:56:34,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:34,346 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:34,346 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:34,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 18:56:34,346 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:34,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1475801625, now seen corresponding path program 3 times [2021-07-13 18:56:34,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:34,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816281258] [2021-07-13 18:56:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:34,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:34,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816281258] [2021-07-13 18:56:34,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816281258] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:34,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:34,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:34,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079549721] [2021-07-13 18:56:35,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:35,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:35,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:35,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:35,014 INFO L87 Difference]: Start difference. First operand 3754 states and 9949 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:37,711 INFO L93 Difference]: Finished difference Result 5678 states and 15047 transitions. [2021-07-13 18:56:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 18:56:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:37,720 INFO L225 Difference]: With dead ends: 5678 [2021-07-13 18:56:37,720 INFO L226 Difference]: Without dead ends: 5678 [2021-07-13 18:56:37,721 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 2200.8ms TimeCoverageRelationStatistics Valid=771, Invalid=2889, Unknown=0, NotChecked=0, Total=3660 [2021-07-13 18:56:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2021-07-13 18:56:37,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 4375. [2021-07-13 18:56:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 4373 states have (on average 2.687399954264807) internal successors, (11752), 4374 states have internal predecessors, (11752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 11752 transitions. [2021-07-13 18:56:37,785 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 11752 transitions. Word has length 94 [2021-07-13 18:56:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:37,785 INFO L482 AbstractCegarLoop]: Abstraction has 4375 states and 11752 transitions. [2021-07-13 18:56:37,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 11752 transitions. [2021-07-13 18:56:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:37,792 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:37,792 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:37,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 18:56:37,792 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1594938693, now seen corresponding path program 14 times [2021-07-13 18:56:37,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:37,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867360449] [2021-07-13 18:56:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:38,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:38,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867360449] [2021-07-13 18:56:38,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867360449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:38,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:38,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:38,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562624246] [2021-07-13 18:56:38,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:38,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:38,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:38,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:38,461 INFO L87 Difference]: Start difference. First operand 4375 states and 11752 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:39,403 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-07-13 18:56:39,533 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:39,700 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-07-13 18:56:39,848 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:56:40,044 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:56:40,242 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 18:56:40,448 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 18:56:40,601 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:56:40,804 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 18:56:41,376 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:41,583 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:41,838 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:56:42,025 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:56:42,252 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 18:56:42,675 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 18:56:43,010 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 18:56:43,133 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:43,360 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-07-13 18:56:43,490 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:43,710 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 18:56:43,833 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 18:56:44,077 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:56:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:44,182 INFO L93 Difference]: Finished difference Result 6745 states and 17169 transitions. [2021-07-13 18:56:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 18:56:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:44,192 INFO L225 Difference]: With dead ends: 6745 [2021-07-13 18:56:44,192 INFO L226 Difference]: Without dead ends: 6745 [2021-07-13 18:56:44,193 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 5249.1ms TimeCoverageRelationStatistics Valid=994, Invalid=2546, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 18:56:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2021-07-13 18:56:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 4303. [2021-07-13 18:56:44,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4303 states, 4301 states have (on average 2.6821669379214135) internal successors, (11536), 4302 states have internal predecessors, (11536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4303 states to 4303 states and 11536 transitions. [2021-07-13 18:56:44,283 INFO L78 Accepts]: Start accepts. Automaton has 4303 states and 11536 transitions. Word has length 94 [2021-07-13 18:56:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:44,284 INFO L482 AbstractCegarLoop]: Abstraction has 4303 states and 11536 transitions. [2021-07-13 18:56:44,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4303 states and 11536 transitions. [2021-07-13 18:56:44,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:44,289 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:44,289 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:44,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 18:56:44,289 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:44,290 INFO L82 PathProgramCache]: Analyzing trace with hash 900549923, now seen corresponding path program 15 times [2021-07-13 18:56:44,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:44,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529069465] [2021-07-13 18:56:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:44,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:44,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:44,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529069465] [2021-07-13 18:56:44,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529069465] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:44,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:44,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:44,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481868829] [2021-07-13 18:56:44,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:44,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:44,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:44,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:44,945 INFO L87 Difference]: Start difference. First operand 4303 states and 11536 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:45,801 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-07-13 18:56:46,181 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-07-13 18:56:46,495 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:56:46,691 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 18:56:46,906 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:56:47,256 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:47,535 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:47,760 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:47,968 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 18:56:48,194 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:56:48,388 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:56:48,645 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-07-13 18:56:49,091 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 18:56:49,417 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 18:56:49,547 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:49,788 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 18:56:49,916 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:50,087 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 18:56:50,285 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 18:56:50,604 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:56:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:50,729 INFO L93 Difference]: Finished difference Result 7983 states and 20169 transitions. [2021-07-13 18:56:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-13 18:56:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:50,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:50,741 INFO L225 Difference]: With dead ends: 7983 [2021-07-13 18:56:50,741 INFO L226 Difference]: Without dead ends: 7983 [2021-07-13 18:56:50,742 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 5235.0ms TimeCoverageRelationStatistics Valid=975, Invalid=2565, Unknown=0, NotChecked=0, Total=3540 [2021-07-13 18:56:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2021-07-13 18:56:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 4231. [2021-07-13 18:56:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4231 states, 4229 states have (on average 2.6767557342161266) internal successors, (11320), 4230 states have internal predecessors, (11320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4231 states to 4231 states and 11320 transitions. [2021-07-13 18:56:50,828 INFO L78 Accepts]: Start accepts. Automaton has 4231 states and 11320 transitions. Word has length 94 [2021-07-13 18:56:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:50,828 INFO L482 AbstractCegarLoop]: Abstraction has 4231 states and 11320 transitions. [2021-07-13 18:56:50,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:50,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4231 states and 11320 transitions. [2021-07-13 18:56:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:50,835 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:50,835 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:50,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 18:56:50,836 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1627365061, now seen corresponding path program 16 times [2021-07-13 18:56:50,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:50,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855030044] [2021-07-13 18:56:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:51,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:51,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855030044] [2021-07-13 18:56:51,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855030044] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:51,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:51,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:51,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320964507] [2021-07-13 18:56:51,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:51,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:51,537 INFO L87 Difference]: Start difference. First operand 4231 states and 11320 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:52,713 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-07-13 18:56:52,843 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:56:53,029 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:56:53,701 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:56:53,836 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:54,013 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:54,195 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 18:56:54,387 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:56:54,549 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:56:54,771 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-07-13 18:56:55,165 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-07-13 18:56:55,416 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:56:55,672 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:56:55,913 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:56:56,071 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 18:56:56,195 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 18:56:56,377 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:56:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:56:56,499 INFO L93 Difference]: Finished difference Result 8100 states and 20445 transitions. [2021-07-13 18:56:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-13 18:56:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:56:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:56:56,510 INFO L225 Difference]: With dead ends: 8100 [2021-07-13 18:56:56,510 INFO L226 Difference]: Without dead ends: 8100 [2021-07-13 18:56:56,511 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 4405.6ms TimeCoverageRelationStatistics Valid=925, Invalid=2497, Unknown=0, NotChecked=0, Total=3422 [2021-07-13 18:56:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2021-07-13 18:56:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 4087. [2021-07-13 18:56:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 4085 states have (on average 2.665361077111383) internal successors, (10888), 4086 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 10888 transitions. [2021-07-13 18:56:56,590 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 10888 transitions. Word has length 94 [2021-07-13 18:56:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:56:56,591 INFO L482 AbstractCegarLoop]: Abstraction has 4087 states and 10888 transitions. [2021-07-13 18:56:56,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 10888 transitions. [2021-07-13 18:56:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:56:56,657 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:56:56,658 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:56:56,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 18:56:56,658 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:56:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:56:56,658 INFO L82 PathProgramCache]: Analyzing trace with hash 833591227, now seen corresponding path program 17 times [2021-07-13 18:56:56,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:56:56,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136497673] [2021-07-13 18:56:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:56:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:56:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:56:57,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:56:57,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136497673] [2021-07-13 18:56:57,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136497673] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:56:57,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:56:57,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:56:57,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803310276] [2021-07-13 18:56:57,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:56:57,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:56:57,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:56:57,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:56:57,413 INFO L87 Difference]: Start difference. First operand 4087 states and 10888 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:56:58,248 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-07-13 18:56:58,404 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-07-13 18:56:58,534 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:56:58,732 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:56:59,147 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-07-13 18:56:59,286 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:56:59,560 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:56:59,713 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:56:59,920 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:00,129 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 18:57:00,361 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:57:00,549 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:57:00,820 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-07-13 18:57:01,212 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 18:57:01,486 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:57:01,609 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:01,775 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:01,903 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:57:02,042 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-07-13 18:57:02,198 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-07-13 18:57:02,475 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:57:02,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:02,596 INFO L93 Difference]: Finished difference Result 8244 states and 20784 transitions. [2021-07-13 18:57:02,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 18:57:02,596 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:02,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:02,634 INFO L225 Difference]: With dead ends: 8244 [2021-07-13 18:57:02,634 INFO L226 Difference]: Without dead ends: 8244 [2021-07-13 18:57:02,635 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4708.4ms TimeCoverageRelationStatistics Valid=877, Invalid=2429, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 18:57:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2021-07-13 18:57:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 4015. [2021-07-13 18:57:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 4013 states have (on average 2.6593570894592573) internal successors, (10672), 4014 states have internal predecessors, (10672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 10672 transitions. [2021-07-13 18:57:02,711 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 10672 transitions. Word has length 94 [2021-07-13 18:57:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:02,711 INFO L482 AbstractCegarLoop]: Abstraction has 4015 states and 10672 transitions. [2021-07-13 18:57:02,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 10672 transitions. [2021-07-13 18:57:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:02,716 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:02,716 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:02,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 18:57:02,716 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:02,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1571348515, now seen corresponding path program 18 times [2021-07-13 18:57:02,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:02,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060971341] [2021-07-13 18:57:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:03,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:03,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060971341] [2021-07-13 18:57:03,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060971341] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:03,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:03,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:03,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550007084] [2021-07-13 18:57:03,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:03,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:03,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:03,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:03,228 INFO L87 Difference]: Start difference. First operand 4015 states and 10672 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:04,100 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:04,451 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-07-13 18:57:04,592 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-07-13 18:57:04,724 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:57:04,995 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:57:05,144 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:57:05,338 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:05,536 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 18:57:05,757 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:57:05,941 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:57:06,196 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-07-13 18:57:06,532 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 18:57:06,784 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:57:06,907 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:07,054 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:57:07,180 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:57:07,305 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-07-13 18:57:07,444 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 18:57:07,571 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 18:57:07,712 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:57:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:07,833 INFO L93 Difference]: Finished difference Result 7598 states and 19373 transitions. [2021-07-13 18:57:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 18:57:07,833 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:07,844 INFO L225 Difference]: With dead ends: 7598 [2021-07-13 18:57:07,844 INFO L226 Difference]: Without dead ends: 7598 [2021-07-13 18:57:07,845 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 4134.8ms TimeCoverageRelationStatistics Valid=831, Invalid=2361, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 18:57:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2021-07-13 18:57:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 3878. [2021-07-13 18:57:07,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3876 states have (on average 2.6519607843137254) internal successors, (10279), 3877 states have internal predecessors, (10279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 10279 transitions. [2021-07-13 18:57:07,932 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 10279 transitions. Word has length 94 [2021-07-13 18:57:07,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:07,932 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 10279 transitions. [2021-07-13 18:57:07,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 10279 transitions. [2021-07-13 18:57:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:07,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:07,937 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:07,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 18:57:07,937 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:07,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1522942427, now seen corresponding path program 19 times [2021-07-13 18:57:07,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:07,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030646171] [2021-07-13 18:57:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:08,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:08,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030646171] [2021-07-13 18:57:08,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030646171] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:08,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:08,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:57:08,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941950407] [2021-07-13 18:57:08,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:57:08,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:08,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:57:08,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:57:08,238 INFO L87 Difference]: Start difference. First operand 3878 states and 10279 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:09,321 INFO L93 Difference]: Finished difference Result 4725 states and 11913 transitions. [2021-07-13 18:57:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:57:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:09,328 INFO L225 Difference]: With dead ends: 4725 [2021-07-13 18:57:09,328 INFO L226 Difference]: Without dead ends: 4725 [2021-07-13 18:57:09,329 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 988.9ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:57:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2021-07-13 18:57:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 3900. [2021-07-13 18:57:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3900 states, 3898 states have (on average 2.650590046177527) internal successors, (10332), 3899 states have internal predecessors, (10332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 10332 transitions. [2021-07-13 18:57:09,390 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 10332 transitions. Word has length 94 [2021-07-13 18:57:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:09,390 INFO L482 AbstractCegarLoop]: Abstraction has 3900 states and 10332 transitions. [2021-07-13 18:57:09,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 10332 transitions. [2021-07-13 18:57:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:09,395 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:09,395 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:09,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 18:57:09,396 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1118769267, now seen corresponding path program 20 times [2021-07-13 18:57:09,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:09,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564611689] [2021-07-13 18:57:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:09,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:09,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564611689] [2021-07-13 18:57:09,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564611689] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:09,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:09,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:09,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548477047] [2021-07-13 18:57:09,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:09,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:09,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:09,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:09,927 INFO L87 Difference]: Start difference. First operand 3900 states and 10332 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:10,905 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:57:11,095 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:57:11,533 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:57:11,739 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:57:11,959 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:57:12,255 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:12,439 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:57:12,623 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:12,818 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:57:12,987 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:57:13,180 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 18:57:13,394 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 18:57:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:13,403 INFO L93 Difference]: Finished difference Result 6168 states and 15677 transitions. [2021-07-13 18:57:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:57:13,403 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:13,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:13,413 INFO L225 Difference]: With dead ends: 6168 [2021-07-13 18:57:13,413 INFO L226 Difference]: Without dead ends: 6168 [2021-07-13 18:57:13,413 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3121.7ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:57:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2021-07-13 18:57:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 4002. [2021-07-13 18:57:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 4000 states have (on average 2.65875) internal successors, (10635), 4001 states have internal predecessors, (10635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 10635 transitions. [2021-07-13 18:57:13,487 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 10635 transitions. Word has length 94 [2021-07-13 18:57:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:13,487 INFO L482 AbstractCegarLoop]: Abstraction has 4002 states and 10635 transitions. [2021-07-13 18:57:13,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 10635 transitions. [2021-07-13 18:57:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:13,492 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:13,492 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:13,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 18:57:13,492 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:13,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:13,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1408874645, now seen corresponding path program 21 times [2021-07-13 18:57:13,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:13,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213383788] [2021-07-13 18:57:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:14,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:14,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213383788] [2021-07-13 18:57:14,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213383788] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:14,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:14,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:14,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687038590] [2021-07-13 18:57:14,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:14,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:14,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:14,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:14,017 INFO L87 Difference]: Start difference. First operand 4002 states and 10635 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:14,889 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:57:15,091 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:57:15,308 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:57:15,529 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 18:57:15,755 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 18:57:16,149 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:57:16,357 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:57:16,692 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 18:57:16,899 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 18:57:17,144 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 18:57:17,360 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 18:57:17,569 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:57:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:17,576 INFO L93 Difference]: Finished difference Result 6776 states and 17301 transitions. [2021-07-13 18:57:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 18:57:17,577 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:17,585 INFO L225 Difference]: With dead ends: 6776 [2021-07-13 18:57:17,585 INFO L226 Difference]: Without dead ends: 6776 [2021-07-13 18:57:17,585 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3204.8ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 18:57:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2021-07-13 18:57:17,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4002. [2021-07-13 18:57:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4002 states, 4000 states have (on average 2.65875) internal successors, (10635), 4001 states have internal predecessors, (10635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 10635 transitions. [2021-07-13 18:57:17,650 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 10635 transitions. Word has length 94 [2021-07-13 18:57:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:17,650 INFO L482 AbstractCegarLoop]: Abstraction has 4002 states and 10635 transitions. [2021-07-13 18:57:17,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 10635 transitions. [2021-07-13 18:57:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:17,655 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:17,655 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:17,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 18:57:17,656 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:17,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1213336997, now seen corresponding path program 22 times [2021-07-13 18:57:17,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:17,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496322444] [2021-07-13 18:57:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:18,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:18,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496322444] [2021-07-13 18:57:18,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496322444] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:18,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:18,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:18,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409163791] [2021-07-13 18:57:18,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:18,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:18,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:18,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:18,158 INFO L87 Difference]: Start difference. First operand 4002 states and 10635 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:18,917 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-13 18:57:19,068 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:57:19,263 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:57:19,612 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:19,783 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:57:19,999 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:57:20,223 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 18:57:20,517 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 18:57:20,684 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 18:57:20,852 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:57:21,027 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:57:21,155 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:21,301 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:21,448 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:57:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:21,455 INFO L93 Difference]: Finished difference Result 6572 states and 16524 transitions. [2021-07-13 18:57:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:57:21,455 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:21,463 INFO L225 Difference]: With dead ends: 6572 [2021-07-13 18:57:21,463 INFO L226 Difference]: Without dead ends: 6572 [2021-07-13 18:57:21,463 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2969.3ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:57:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2021-07-13 18:57:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 4004. [2021-07-13 18:57:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4002 states have (on average 2.658670664667666) internal successors, (10640), 4003 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 10640 transitions. [2021-07-13 18:57:21,560 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 10640 transitions. Word has length 94 [2021-07-13 18:57:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:21,560 INFO L482 AbstractCegarLoop]: Abstraction has 4004 states and 10640 transitions. [2021-07-13 18:57:21,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 10640 transitions. [2021-07-13 18:57:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:21,565 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:21,565 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:21,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 18:57:21,565 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:21,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:21,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1313094545, now seen corresponding path program 23 times [2021-07-13 18:57:21,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:21,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257584367] [2021-07-13 18:57:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:22,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:22,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257584367] [2021-07-13 18:57:22,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257584367] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:22,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:22,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:22,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243482080] [2021-07-13 18:57:22,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:22,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:22,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:22,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:22,177 INFO L87 Difference]: Start difference. First operand 4004 states and 10640 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:23,130 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:57:23,416 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:23,572 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:23,756 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:57:23,938 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:24,150 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:57:24,464 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 18:57:24,612 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 18:57:24,757 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:57:24,911 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:57:25,042 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:25,192 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:25,346 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:57:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:25,353 INFO L93 Difference]: Finished difference Result 6482 states and 16299 transitions. [2021-07-13 18:57:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:57:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:25,362 INFO L225 Difference]: With dead ends: 6482 [2021-07-13 18:57:25,362 INFO L226 Difference]: Without dead ends: 6482 [2021-07-13 18:57:25,364 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2931.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:57:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2021-07-13 18:57:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 4004. [2021-07-13 18:57:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4002 states have (on average 2.658670664667666) internal successors, (10640), 4003 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 10640 transitions. [2021-07-13 18:57:25,428 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 10640 transitions. Word has length 94 [2021-07-13 18:57:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:25,428 INFO L482 AbstractCegarLoop]: Abstraction has 4004 states and 10640 transitions. [2021-07-13 18:57:25,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 10640 transitions. [2021-07-13 18:57:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:25,433 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:25,433 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:25,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 18:57:25,433 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:25,433 INFO L82 PathProgramCache]: Analyzing trace with hash -637907537, now seen corresponding path program 24 times [2021-07-13 18:57:25,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:25,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679369270] [2021-07-13 18:57:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:25,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:25,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679369270] [2021-07-13 18:57:25,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679369270] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:25,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:25,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:25,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759025714] [2021-07-13 18:57:25,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:25,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:25,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:25,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:25,993 INFO L87 Difference]: Start difference. First operand 4004 states and 10640 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:26,877 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:57:27,077 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:57:27,271 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:57:27,490 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:57:27,666 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:57:27,888 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 18:57:28,341 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:57:28,528 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:28,741 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:57:29,111 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 18:57:29,287 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:57:29,453 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 18:57:29,636 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 18:57:29,841 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 18:57:30,035 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 18:57:30,224 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:57:30,435 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 18:57:30,630 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:30,832 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 18:57:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:30,843 INFO L93 Difference]: Finished difference Result 7995 states and 20151 transitions. [2021-07-13 18:57:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 18:57:30,844 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:30,853 INFO L225 Difference]: With dead ends: 7995 [2021-07-13 18:57:30,854 INFO L226 Difference]: Without dead ends: 7995 [2021-07-13 18:57:30,854 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4359.5ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 18:57:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7995 states. [2021-07-13 18:57:30,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7995 to 4016. [2021-07-13 18:57:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4014 states have (on average 2.659691081215745) internal successors, (10676), 4015 states have internal predecessors, (10676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 10676 transitions. [2021-07-13 18:57:30,925 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 10676 transitions. Word has length 94 [2021-07-13 18:57:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:30,925 INFO L482 AbstractCegarLoop]: Abstraction has 4016 states and 10676 transitions. [2021-07-13 18:57:30,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 10676 transitions. [2021-07-13 18:57:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:30,930 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:30,930 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:30,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 18:57:30,930 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:30,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash 399912361, now seen corresponding path program 25 times [2021-07-13 18:57:30,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:30,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793770842] [2021-07-13 18:57:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:31,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:31,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793770842] [2021-07-13 18:57:31,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793770842] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:31,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:31,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:31,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969094477] [2021-07-13 18:57:31,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:31,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:31,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:31,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:31,471 INFO L87 Difference]: Start difference. First operand 4016 states and 10676 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:32,342 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:57:32,544 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:57:32,741 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:57:32,954 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:57:33,351 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:33,577 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:57:33,768 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:33,996 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:57:34,373 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 18:57:34,568 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 18:57:34,772 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 18:57:34,949 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:35,140 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:57:35,333 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:35,340 INFO L93 Difference]: Finished difference Result 7164 states and 18070 transitions. [2021-07-13 18:57:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:57:35,341 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:35,351 INFO L225 Difference]: With dead ends: 7164 [2021-07-13 18:57:35,352 INFO L226 Difference]: Without dead ends: 7164 [2021-07-13 18:57:35,352 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3454.9ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:57:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7164 states. [2021-07-13 18:57:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7164 to 4004. [2021-07-13 18:57:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4002 states have (on average 2.658670664667666) internal successors, (10640), 4003 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 10640 transitions. [2021-07-13 18:57:35,455 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 10640 transitions. Word has length 94 [2021-07-13 18:57:35,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:35,469 INFO L482 AbstractCegarLoop]: Abstraction has 4004 states and 10640 transitions. [2021-07-13 18:57:35,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:35,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 10640 transitions. [2021-07-13 18:57:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:35,490 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:35,490 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:35,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 18:57:35,491 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:35,491 INFO L82 PathProgramCache]: Analyzing trace with hash 54616717, now seen corresponding path program 26 times [2021-07-13 18:57:35,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:35,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364176717] [2021-07-13 18:57:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:36,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:36,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364176717] [2021-07-13 18:57:36,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364176717] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:36,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:36,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:36,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247588074] [2021-07-13 18:57:36,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:36,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:36,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:36,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:36,217 INFO L87 Difference]: Start difference. First operand 4004 states and 10640 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:37,118 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-07-13 18:57:37,295 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-13 18:57:37,452 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:57:37,870 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:38,049 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:38,228 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:57:38,458 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:57:38,688 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 18:57:38,995 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 18:57:39,163 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 18:57:39,323 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:57:39,492 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:57:39,630 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:39,789 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:57:39,973 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:57:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:39,981 INFO L93 Difference]: Finished difference Result 6692 states and 16809 transitions. [2021-07-13 18:57:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:57:39,982 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:39,989 INFO L225 Difference]: With dead ends: 6692 [2021-07-13 18:57:39,990 INFO L226 Difference]: Without dead ends: 6692 [2021-07-13 18:57:39,991 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3384.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:57:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6692 states. [2021-07-13 18:57:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6692 to 4010. [2021-07-13 18:57:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4008 states have (on average 2.658433133732535) internal successors, (10655), 4009 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 10655 transitions. [2021-07-13 18:57:40,051 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 10655 transitions. Word has length 94 [2021-07-13 18:57:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:40,052 INFO L482 AbstractCegarLoop]: Abstraction has 4010 states and 10655 transitions. [2021-07-13 18:57:40,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 10655 transitions. [2021-07-13 18:57:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:40,057 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:40,057 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:40,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 18:57:40,057 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:40,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:40,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1823152471, now seen corresponding path program 27 times [2021-07-13 18:57:40,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:40,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534732206] [2021-07-13 18:57:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:40,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:40,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534732206] [2021-07-13 18:57:40,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534732206] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:40,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:40,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:40,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424972452] [2021-07-13 18:57:40,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:40,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:40,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:40,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:40,538 INFO L87 Difference]: Start difference. First operand 4010 states and 10655 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:41,538 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:41,713 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:41,905 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:42,122 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:57:42,308 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:42,532 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:57:42,873 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 18:57:43,032 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 18:57:43,185 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:57:43,371 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:57:43,504 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:57:43,661 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:57:43,818 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:57:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:43,826 INFO L93 Difference]: Finished difference Result 6966 states and 17336 transitions. [2021-07-13 18:57:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:57:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:43,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:43,836 INFO L225 Difference]: With dead ends: 6966 [2021-07-13 18:57:43,837 INFO L226 Difference]: Without dead ends: 6966 [2021-07-13 18:57:43,839 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2805.3ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:57:43,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6966 states. [2021-07-13 18:57:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6966 to 4008. [2021-07-13 18:57:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4006 states have (on average 2.658512231652521) internal successors, (10650), 4007 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 10650 transitions. [2021-07-13 18:57:43,914 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 10650 transitions. Word has length 94 [2021-07-13 18:57:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:43,914 INFO L482 AbstractCegarLoop]: Abstraction has 4008 states and 10650 transitions. [2021-07-13 18:57:43,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 10650 transitions. [2021-07-13 18:57:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:43,919 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:43,919 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:43,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 18:57:43,919 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1287900301, now seen corresponding path program 28 times [2021-07-13 18:57:43,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:43,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610197890] [2021-07-13 18:57:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:44,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:44,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610197890] [2021-07-13 18:57:44,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610197890] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:44,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:44,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:44,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687422933] [2021-07-13 18:57:44,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:44,364 INFO L87 Difference]: Start difference. First operand 4008 states and 10650 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:45,596 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:57:45,752 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:45,907 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:46,092 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:57:46,252 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:46,449 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:57:46,907 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 18:57:47,040 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:57:47,184 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:57:47,466 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:57:47,631 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:57:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:47,640 INFO L93 Difference]: Finished difference Result 6628 states and 16633 transitions. [2021-07-13 18:57:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 18:57:47,640 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:47,648 INFO L225 Difference]: With dead ends: 6628 [2021-07-13 18:57:47,648 INFO L226 Difference]: Without dead ends: 6628 [2021-07-13 18:57:47,649 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2882.0ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 18:57:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2021-07-13 18:57:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 4008. [2021-07-13 18:57:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4006 states have (on average 2.658512231652521) internal successors, (10650), 4007 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 10650 transitions. [2021-07-13 18:57:47,717 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 10650 transitions. Word has length 94 [2021-07-13 18:57:47,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:47,717 INFO L482 AbstractCegarLoop]: Abstraction has 4008 states and 10650 transitions. [2021-07-13 18:57:47,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 10650 transitions. [2021-07-13 18:57:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:47,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:47,723 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:47,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 18:57:47,723 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:47,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1210399381, now seen corresponding path program 29 times [2021-07-13 18:57:47,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:47,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199137689] [2021-07-13 18:57:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:48,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:48,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199137689] [2021-07-13 18:57:48,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199137689] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:48,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:48,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:48,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856915954] [2021-07-13 18:57:48,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:48,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:48,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:48,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:48,335 INFO L87 Difference]: Start difference. First operand 4008 states and 10650 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:49,255 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:49,446 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:57:49,635 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:57:49,850 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:57:50,005 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:57:50,193 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 18:57:50,505 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:50,696 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:57:50,857 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:51,054 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:57:51,385 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:57:51,567 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:57:51,720 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:57:51,932 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 18:57:52,091 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 18:57:52,281 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 18:57:52,437 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 18:57:52,619 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 18:57:52,776 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:52,956 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 18:57:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:52,966 INFO L93 Difference]: Finished difference Result 8350 states and 21073 transitions. [2021-07-13 18:57:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 18:57:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:52,976 INFO L225 Difference]: With dead ends: 8350 [2021-07-13 18:57:52,977 INFO L226 Difference]: Without dead ends: 8350 [2021-07-13 18:57:52,977 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4268.0ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 18:57:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8350 states. [2021-07-13 18:57:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8350 to 4044. [2021-07-13 18:57:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 4042 states have (on average 2.6615536862939138) internal successors, (10758), 4043 states have internal predecessors, (10758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 10758 transitions. [2021-07-13 18:57:53,054 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 10758 transitions. Word has length 94 [2021-07-13 18:57:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:53,055 INFO L482 AbstractCegarLoop]: Abstraction has 4044 states and 10758 transitions. [2021-07-13 18:57:53,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 10758 transitions. [2021-07-13 18:57:53,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:53,059 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:53,059 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:53,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 18:57:53,060 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:53,060 INFO L82 PathProgramCache]: Analyzing trace with hash -172579483, now seen corresponding path program 30 times [2021-07-13 18:57:53,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:53,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385847013] [2021-07-13 18:57:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:53,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:53,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385847013] [2021-07-13 18:57:53,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385847013] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:53,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:53,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:53,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289083619] [2021-07-13 18:57:53,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:53,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:53,658 INFO L87 Difference]: Start difference. First operand 4044 states and 10758 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:54,562 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:57:54,743 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:57:54,934 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:57:55,125 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:57:55,321 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:57:55,681 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:55,834 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:56,016 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:57:56,189 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:56,428 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:57:56,830 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:57:57,016 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 18:57:57,221 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:57:57,414 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 18:57:57,600 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 18:57:57,802 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 18:57:57,985 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:57:58,157 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 18:57:58,354 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:57:58,539 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:57:58,728 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:57:58,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:58,739 INFO L93 Difference]: Finished difference Result 8619 states and 21533 transitions. [2021-07-13 18:57:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 18:57:58,739 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:57:58,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:58,749 INFO L225 Difference]: With dead ends: 8619 [2021-07-13 18:57:58,749 INFO L226 Difference]: Without dead ends: 8619 [2021-07-13 18:57:58,749 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4630.6ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 18:57:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8619 states. [2021-07-13 18:57:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8619 to 4032. [2021-07-13 18:57:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4032 states, 4030 states have (on average 2.660545905707196) internal successors, (10722), 4031 states have internal predecessors, (10722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 10722 transitions. [2021-07-13 18:57:58,821 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 10722 transitions. Word has length 94 [2021-07-13 18:57:58,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:58,821 INFO L482 AbstractCegarLoop]: Abstraction has 4032 states and 10722 transitions. [2021-07-13 18:57:58,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:58,821 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 10722 transitions. [2021-07-13 18:57:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:57:58,826 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:58,826 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:58,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 18:57:58,826 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:58,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:58,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2137608785, now seen corresponding path program 31 times [2021-07-13 18:57:58,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:58,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71408815] [2021-07-13 18:57:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:59,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:59,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71408815] [2021-07-13 18:57:59,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71408815] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:59,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:59,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:57:59,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135985983] [2021-07-13 18:57:59,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:57:59,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:59,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:57:59,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:57:59,415 INFO L87 Difference]: Start difference. First operand 4032 states and 10722 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:00,275 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 18:58:00,455 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:00,645 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:58:01,051 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:01,227 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:01,408 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:01,618 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:01,805 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:02,031 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:02,387 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:58:02,563 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:58:02,745 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 18:58:02,920 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:03,092 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 18:58:03,268 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:03,275 INFO L93 Difference]: Finished difference Result 7446 states and 18786 transitions. [2021-07-13 18:58:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 18:58:03,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:03,283 INFO L225 Difference]: With dead ends: 7446 [2021-07-13 18:58:03,284 INFO L226 Difference]: Without dead ends: 7446 [2021-07-13 18:58:03,290 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3480.5ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 18:58:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2021-07-13 18:58:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 4008. [2021-07-13 18:58:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4006 states have (on average 2.658512231652521) internal successors, (10650), 4007 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 10650 transitions. [2021-07-13 18:58:03,354 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 10650 transitions. Word has length 94 [2021-07-13 18:58:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:03,355 INFO L482 AbstractCegarLoop]: Abstraction has 4008 states and 10650 transitions. [2021-07-13 18:58:03,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 10650 transitions. [2021-07-13 18:58:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:03,359 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:03,359 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:03,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 18:58:03,360 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:03,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:03,360 INFO L82 PathProgramCache]: Analyzing trace with hash -688350195, now seen corresponding path program 32 times [2021-07-13 18:58:03,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:03,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822615244] [2021-07-13 18:58:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:03,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:03,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822615244] [2021-07-13 18:58:03,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822615244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:03,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:03,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:03,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970753783] [2021-07-13 18:58:03,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:03,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:03,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:03,860 INFO L87 Difference]: Start difference. First operand 4008 states and 10650 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:04,643 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:04,769 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:04,930 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:05,089 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:58:05,279 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:58:05,471 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 18:58:06,082 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:58:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:06,444 INFO L93 Difference]: Finished difference Result 6812 states and 17094 transitions. [2021-07-13 18:58:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:58:06,444 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:06,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:06,452 INFO L225 Difference]: With dead ends: 6812 [2021-07-13 18:58:06,452 INFO L226 Difference]: Without dead ends: 6812 [2021-07-13 18:58:06,453 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2396.0ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:58:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6812 states. [2021-07-13 18:58:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6812 to 4016. [2021-07-13 18:58:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4014 states have (on average 2.658196312904833) internal successors, (10670), 4015 states have internal predecessors, (10670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 10670 transitions. [2021-07-13 18:58:06,512 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 10670 transitions. Word has length 94 [2021-07-13 18:58:06,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:06,512 INFO L482 AbstractCegarLoop]: Abstraction has 4016 states and 10670 transitions. [2021-07-13 18:58:06,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 10670 transitions. [2021-07-13 18:58:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:06,516 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:06,517 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:06,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 18:58:06,517 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:06,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1080185559, now seen corresponding path program 33 times [2021-07-13 18:58:06,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:06,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868984718] [2021-07-13 18:58:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:06,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:06,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868984718] [2021-07-13 18:58:06,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868984718] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:06,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:06,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:06,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289395154] [2021-07-13 18:58:06,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:06,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:06,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:06,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:06,975 INFO L87 Difference]: Start difference. First operand 4016 states and 10670 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:07,661 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-13 18:58:08,266 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:08,436 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:08,668 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:08,870 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:09,104 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:09,440 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-07-13 18:58:09,593 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 18:58:09,753 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:58:09,906 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:58:10,030 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:10,175 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:58:10,325 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:58:10,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:10,333 INFO L93 Difference]: Finished difference Result 7086 states and 17621 transitions. [2021-07-13 18:58:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:58:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:10,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:10,342 INFO L225 Difference]: With dead ends: 7086 [2021-07-13 18:58:10,342 INFO L226 Difference]: Without dead ends: 7086 [2021-07-13 18:58:10,343 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2889.2ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:58:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2021-07-13 18:58:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 4014. [2021-07-13 18:58:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 4012 states have (on average 2.6582751744765702) internal successors, (10665), 4013 states have internal predecessors, (10665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 10665 transitions. [2021-07-13 18:58:10,408 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 10665 transitions. Word has length 94 [2021-07-13 18:58:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:10,408 INFO L482 AbstractCegarLoop]: Abstraction has 4014 states and 10665 transitions. [2021-07-13 18:58:10,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 10665 transitions. [2021-07-13 18:58:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:10,413 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:10,413 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:10,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 18:58:10,413 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:10,414 INFO L82 PathProgramCache]: Analyzing trace with hash 544933389, now seen corresponding path program 34 times [2021-07-13 18:58:10,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:10,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412826640] [2021-07-13 18:58:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:10,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:10,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412826640] [2021-07-13 18:58:10,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412826640] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:10,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:10,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:10,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443768252] [2021-07-13 18:58:10,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:10,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:10,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:10,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:10,865 INFO L87 Difference]: Start difference. First operand 4014 states and 10665 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:12,073 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:12,235 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:12,398 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:12,586 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:12,747 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:12,980 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:13,689 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:13,854 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:58:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:13,986 INFO L93 Difference]: Finished difference Result 7152 states and 17765 transitions. [2021-07-13 18:58:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 18:58:13,986 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:13,995 INFO L225 Difference]: With dead ends: 7152 [2021-07-13 18:58:13,995 INFO L226 Difference]: Without dead ends: 7152 [2021-07-13 18:58:13,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2735.7ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 18:58:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7152 states. [2021-07-13 18:58:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7152 to 4010. [2021-07-13 18:58:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4008 states have (on average 2.658433133732535) internal successors, (10655), 4009 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 10655 transitions. [2021-07-13 18:58:14,063 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 10655 transitions. Word has length 94 [2021-07-13 18:58:14,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:14,063 INFO L482 AbstractCegarLoop]: Abstraction has 4010 states and 10655 transitions. [2021-07-13 18:58:14,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:14,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 10655 transitions. [2021-07-13 18:58:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:14,067 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:14,067 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:14,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 18:58:14,067 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:14,067 INFO L82 PathProgramCache]: Analyzing trace with hash -644680947, now seen corresponding path program 35 times [2021-07-13 18:58:14,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:14,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147046429] [2021-07-13 18:58:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:14,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:14,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147046429] [2021-07-13 18:58:14,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147046429] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:14,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:14,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:14,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558971202] [2021-07-13 18:58:14,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:14,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:14,603 INFO L87 Difference]: Start difference. First operand 4010 states and 10655 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:15,623 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:15,776 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:58:15,942 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:16,096 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:16,275 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:16,470 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:16,712 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:16,900 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:17,126 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:17,415 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-07-13 18:58:17,555 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 18:58:17,692 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:58:17,837 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:58:17,957 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:18,098 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:58:18,240 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:58:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:18,248 INFO L93 Difference]: Finished difference Result 6734 states and 16872 transitions. [2021-07-13 18:58:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 18:58:18,248 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:18,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:18,256 INFO L225 Difference]: With dead ends: 6734 [2021-07-13 18:58:18,257 INFO L226 Difference]: Without dead ends: 6734 [2021-07-13 18:58:18,257 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3353.8ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 18:58:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6734 states. [2021-07-13 18:58:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6734 to 4010. [2021-07-13 18:58:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4008 states have (on average 2.658433133732535) internal successors, (10655), 4009 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 10655 transitions. [2021-07-13 18:58:18,318 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 10655 transitions. Word has length 94 [2021-07-13 18:58:18,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:18,318 INFO L482 AbstractCegarLoop]: Abstraction has 4010 states and 10655 transitions. [2021-07-13 18:58:18,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:18,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 10655 transitions. [2021-07-13 18:58:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:18,322 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:18,323 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:18,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 18:58:18,323 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash -235342741, now seen corresponding path program 36 times [2021-07-13 18:58:18,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:18,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466545242] [2021-07-13 18:58:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:18,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:18,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466545242] [2021-07-13 18:58:18,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466545242] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:18,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:18,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:18,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103557388] [2021-07-13 18:58:18,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:18,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:18,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:18,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:18,997 INFO L87 Difference]: Start difference. First operand 4010 states and 10655 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:19,888 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:20,064 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:20,215 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:58:20,427 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:58:20,630 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:58:20,855 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:58:21,036 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:58:21,273 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 18:58:21,639 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:21,827 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:22,078 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:58:22,266 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:22,530 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:58:22,899 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:58:23,103 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:58:23,261 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:58:23,473 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 18:58:23,639 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 18:58:23,865 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 18:58:24,031 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 18:58:24,244 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 18:58:24,435 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:24,640 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 18:58:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:24,650 INFO L93 Difference]: Finished difference Result 8703 states and 21990 transitions. [2021-07-13 18:58:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 18:58:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:24,660 INFO L225 Difference]: With dead ends: 8703 [2021-07-13 18:58:24,660 INFO L226 Difference]: Without dead ends: 8703 [2021-07-13 18:58:24,660 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 5153.8ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 18:58:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8703 states. [2021-07-13 18:58:24,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8703 to 4058. [2021-07-13 18:58:24,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 4056 states have (on average 2.662475345167653) internal successors, (10799), 4057 states have internal predecessors, (10799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 10799 transitions. [2021-07-13 18:58:24,726 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 10799 transitions. Word has length 94 [2021-07-13 18:58:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:24,726 INFO L482 AbstractCegarLoop]: Abstraction has 4058 states and 10799 transitions. [2021-07-13 18:58:24,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 10799 transitions. [2021-07-13 18:58:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:24,730 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:24,730 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:24,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 18:58:24,730 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:24,731 INFO L82 PathProgramCache]: Analyzing trace with hash 802477157, now seen corresponding path program 37 times [2021-07-13 18:58:24,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:24,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28742134] [2021-07-13 18:58:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:25,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:25,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28742134] [2021-07-13 18:58:25,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28742134] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:25,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:25,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:25,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706753230] [2021-07-13 18:58:25,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:25,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:25,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:25,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:25,282 INFO L87 Difference]: Start difference. First operand 4058 states and 10799 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:26,033 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-13 18:58:26,196 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:26,369 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:26,516 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:58:26,701 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:58:26,901 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:58:27,120 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:58:27,512 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:27,696 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:27,895 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:28,141 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:28,331 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:28,568 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:28,961 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:58:29,152 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 18:58:29,316 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:58:29,511 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 18:58:29,680 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 18:58:29,883 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 18:58:30,089 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:30,245 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 18:58:30,447 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:58:30,612 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:30,801 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:30,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:30,811 INFO L93 Difference]: Finished difference Result 8972 states and 22450 transitions. [2021-07-13 18:58:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 18:58:30,812 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:30,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:30,821 INFO L225 Difference]: With dead ends: 8972 [2021-07-13 18:58:30,821 INFO L226 Difference]: Without dead ends: 8972 [2021-07-13 18:58:30,821 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4953.1ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 18:58:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2021-07-13 18:58:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 4046. [2021-07-13 18:58:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4046 states, 4044 states have (on average 2.661473788328388) internal successors, (10763), 4045 states have internal predecessors, (10763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4046 states to 4046 states and 10763 transitions. [2021-07-13 18:58:30,889 INFO L78 Accepts]: Start accepts. Automaton has 4046 states and 10763 transitions. Word has length 94 [2021-07-13 18:58:30,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:30,890 INFO L482 AbstractCegarLoop]: Abstraction has 4046 states and 10763 transitions. [2021-07-13 18:58:30,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4046 states and 10763 transitions. [2021-07-13 18:58:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:30,894 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:30,894 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:30,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 18:58:30,894 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1162552145, now seen corresponding path program 38 times [2021-07-13 18:58:30,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:30,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195940514] [2021-07-13 18:58:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:31,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:31,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195940514] [2021-07-13 18:58:31,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195940514] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:31,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:31,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:31,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683444854] [2021-07-13 18:58:31,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:31,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:31,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:31,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:31,444 INFO L87 Difference]: Start difference. First operand 4046 states and 10763 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:32,374 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:32,546 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:32,692 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:58:32,877 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:58:33,330 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:33,503 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:33,723 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:33,920 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:34,138 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:34,332 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:34,562 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:34,973 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:58:35,144 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:58:35,303 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:58:35,483 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:58:35,678 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 18:58:35,864 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 18:58:36,108 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 18:58:36,282 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 18:58:36,451 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:36,620 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:36,630 INFO L93 Difference]: Finished difference Result 9016 states and 22548 transitions. [2021-07-13 18:58:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 18:58:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:36,639 INFO L225 Difference]: With dead ends: 9016 [2021-07-13 18:58:36,640 INFO L226 Difference]: Without dead ends: 9016 [2021-07-13 18:58:36,640 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4553.6ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 18:58:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2021-07-13 18:58:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 4022. [2021-07-13 18:58:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4022 states, 4020 states have (on average 2.659452736318408) internal successors, (10691), 4021 states have internal predecessors, (10691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:36,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 10691 transitions. [2021-07-13 18:58:36,708 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 10691 transitions. Word has length 94 [2021-07-13 18:58:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:36,709 INFO L482 AbstractCegarLoop]: Abstraction has 4022 states and 10691 transitions. [2021-07-13 18:58:36,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 10691 transitions. [2021-07-13 18:58:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:36,713 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:36,713 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:36,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 18:58:36,714 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1030450001, now seen corresponding path program 39 times [2021-07-13 18:58:36,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:36,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091403238] [2021-07-13 18:58:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:37,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:37,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091403238] [2021-07-13 18:58:37,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091403238] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:37,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:37,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:37,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474865692] [2021-07-13 18:58:37,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:37,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:37,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:37,320 INFO L87 Difference]: Start difference. First operand 4022 states and 10691 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:38,222 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:38,396 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:58:38,770 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:58:38,936 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:39,094 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:39,304 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:39,494 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:39,714 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:39,866 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:40,027 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:40,904 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:40,909 INFO L93 Difference]: Finished difference Result 7620 states and 19216 transitions. [2021-07-13 18:58:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 18:58:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:40,918 INFO L225 Difference]: With dead ends: 7620 [2021-07-13 18:58:40,918 INFO L226 Difference]: Without dead ends: 7620 [2021-07-13 18:58:40,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3219.0ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 18:58:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2021-07-13 18:58:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 4010. [2021-07-13 18:58:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4008 states have (on average 2.658433133732535) internal successors, (10655), 4009 states have internal predecessors, (10655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:40,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 10655 transitions. [2021-07-13 18:58:40,982 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 10655 transitions. Word has length 94 [2021-07-13 18:58:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:40,982 INFO L482 AbstractCegarLoop]: Abstraction has 4010 states and 10655 transitions. [2021-07-13 18:58:40,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 10655 transitions. [2021-07-13 18:58:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:40,986 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:40,986 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:40,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 18:58:40,987 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:40,987 INFO L82 PathProgramCache]: Analyzing trace with hash 491362981, now seen corresponding path program 40 times [2021-07-13 18:58:40,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:40,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157495935] [2021-07-13 18:58:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:41,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:41,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157495935] [2021-07-13 18:58:41,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157495935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:41,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:41,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:41,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24908419] [2021-07-13 18:58:41,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:41,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:41,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:41,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:41,491 INFO L87 Difference]: Start difference. First operand 4010 states and 10655 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:42,507 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:42,683 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:42,874 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:43,055 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:58:43,276 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:58:43,499 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 18:58:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:44,238 INFO L93 Difference]: Finished difference Result 6330 states and 16059 transitions. [2021-07-13 18:58:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:58:44,239 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:44,247 INFO L225 Difference]: With dead ends: 6330 [2021-07-13 18:58:44,247 INFO L226 Difference]: Without dead ends: 6330 [2021-07-13 18:58:44,247 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2446.4ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:58:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2021-07-13 18:58:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 4020. [2021-07-13 18:58:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4018 states have (on average 2.658038825286212) internal successors, (10680), 4019 states have internal predecessors, (10680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:44,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 10680 transitions. [2021-07-13 18:58:44,334 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 10680 transitions. Word has length 94 [2021-07-13 18:58:44,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:44,334 INFO L482 AbstractCegarLoop]: Abstraction has 4020 states and 10680 transitions. [2021-07-13 18:58:44,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:44,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 10680 transitions. [2021-07-13 18:58:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:44,338 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:44,338 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:44,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 18:58:44,338 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:44,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:44,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2035068561, now seen corresponding path program 41 times [2021-07-13 18:58:44,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:44,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487925364] [2021-07-13 18:58:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:44,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:44,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487925364] [2021-07-13 18:58:44,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487925364] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:44,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:44,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:44,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707470038] [2021-07-13 18:58:44,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:44,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:44,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:44,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:44,767 INFO L87 Difference]: Start difference. First operand 4020 states and 10680 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:45,585 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:45,739 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:45,954 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:58:46,148 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:46,359 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:46,549 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:46,773 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:47,332 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-13 18:58:47,468 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 18:58:47,708 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-07-13 18:58:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:47,848 INFO L93 Difference]: Finished difference Result 6604 states and 16586 transitions. [2021-07-13 18:58:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:58:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:47,882 INFO L225 Difference]: With dead ends: 6604 [2021-07-13 18:58:47,882 INFO L226 Difference]: Without dead ends: 6604 [2021-07-13 18:58:47,882 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2734.9ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:58:47,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-07-13 18:58:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 4018. [2021-07-13 18:58:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 4016 states have (on average 2.658117529880478) internal successors, (10675), 4017 states have internal predecessors, (10675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 10675 transitions. [2021-07-13 18:58:47,938 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 10675 transitions. Word has length 94 [2021-07-13 18:58:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:47,939 INFO L482 AbstractCegarLoop]: Abstraction has 4018 states and 10675 transitions. [2021-07-13 18:58:47,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 10675 transitions. [2021-07-13 18:58:47,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:47,943 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:47,943 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:47,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 18:58:47,945 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:47,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1724646565, now seen corresponding path program 42 times [2021-07-13 18:58:47,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:47,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349373865] [2021-07-13 18:58:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:48,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:48,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349373865] [2021-07-13 18:58:48,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349373865] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:48,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:48,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:48,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005265928] [2021-07-13 18:58:48,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:48,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:48,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:48,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:48,545 INFO L87 Difference]: Start difference. First operand 4018 states and 10675 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:49,603 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:58:49,790 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:58:49,978 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:50,179 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:50,377 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:50,609 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:50,803 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:51,041 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:51,863 INFO L93 Difference]: Finished difference Result 6670 states and 16730 transitions. [2021-07-13 18:58:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 18:58:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:51,871 INFO L225 Difference]: With dead ends: 6670 [2021-07-13 18:58:51,871 INFO L226 Difference]: Without dead ends: 6670 [2021-07-13 18:58:51,872 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2906.4ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 18:58:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6670 states. [2021-07-13 18:58:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6670 to 4014. [2021-07-13 18:58:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 4012 states have (on average 2.6582751744765702) internal successors, (10665), 4013 states have internal predecessors, (10665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 10665 transitions. [2021-07-13 18:58:51,927 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 10665 transitions. Word has length 94 [2021-07-13 18:58:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:51,928 INFO L482 AbstractCegarLoop]: Abstraction has 4014 states and 10665 transitions. [2021-07-13 18:58:51,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 10665 transitions. [2021-07-13 18:58:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:51,932 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:51,932 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:51,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-13 18:58:51,932 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:51,932 INFO L82 PathProgramCache]: Analyzing trace with hash 535032229, now seen corresponding path program 43 times [2021-07-13 18:58:51,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:51,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652178349] [2021-07-13 18:58:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:52,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:52,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652178349] [2021-07-13 18:58:52,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652178349] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:52,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:52,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:52,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662356547] [2021-07-13 18:58:52,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:52,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:52,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:52,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:52,412 INFO L87 Difference]: Start difference. First operand 4014 states and 10665 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:53,275 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:58:53,421 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:53,553 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:53,713 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:53,884 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:54,085 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:54,249 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:54,452 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:55,431 INFO L93 Difference]: Finished difference Result 6736 states and 16874 transitions. [2021-07-13 18:58:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 18:58:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:55,439 INFO L225 Difference]: With dead ends: 6736 [2021-07-13 18:58:55,439 INFO L226 Difference]: Without dead ends: 6736 [2021-07-13 18:58:55,440 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2673.4ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 18:58:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2021-07-13 18:58:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 4012. [2021-07-13 18:58:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4012 states, 4010 states have (on average 2.658354114713217) internal successors, (10660), 4011 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4012 states to 4012 states and 10660 transitions. [2021-07-13 18:58:55,496 INFO L78 Accepts]: Start accepts. Automaton has 4012 states and 10660 transitions. Word has length 94 [2021-07-13 18:58:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:55,496 INFO L482 AbstractCegarLoop]: Abstraction has 4012 states and 10660 transitions. [2021-07-13 18:58:55,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4012 states and 10660 transitions. [2021-07-13 18:58:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:58:55,500 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:55,500 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:55,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-13 18:58:55,501 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:55,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1726908561, now seen corresponding path program 44 times [2021-07-13 18:58:55,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:55,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928656624] [2021-07-13 18:58:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:56,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:56,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928656624] [2021-07-13 18:58:56,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928656624] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:56,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:56,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:58:56,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323823843] [2021-07-13 18:58:56,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:58:56,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:56,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:58:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:58:56,102 INFO L87 Difference]: Start difference. First operand 4012 states and 10660 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:57,186 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:58:57,342 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:58:57,485 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:58:57,656 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:58:57,815 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:58:58,018 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:58:58,222 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:58:58,466 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:58:58,661 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:58:58,899 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:58:59,462 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-13 18:58:59,597 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 18:58:59,839 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-07-13 18:58:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:59,981 INFO L93 Difference]: Finished difference Result 6256 states and 15838 transitions. [2021-07-13 18:58:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 18:58:59,982 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:58:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:59,989 INFO L225 Difference]: With dead ends: 6256 [2021-07-13 18:58:59,989 INFO L226 Difference]: Without dead ends: 6256 [2021-07-13 18:58:59,990 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3504.2ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 18:58:59,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2021-07-13 18:59:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 4012. [2021-07-13 18:59:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4012 states, 4010 states have (on average 2.658354114713217) internal successors, (10660), 4011 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:00,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4012 states to 4012 states and 10660 transitions. [2021-07-13 18:59:00,048 INFO L78 Accepts]: Start accepts. Automaton has 4012 states and 10660 transitions. Word has length 94 [2021-07-13 18:59:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:00,048 INFO L482 AbstractCegarLoop]: Abstraction has 4012 states and 10660 transitions. [2021-07-13 18:59:00,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:00,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4012 states and 10660 transitions. [2021-07-13 18:59:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:00,052 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:00,052 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:00,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-13 18:59:00,053 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:00,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:00,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1938681775, now seen corresponding path program 45 times [2021-07-13 18:59:00,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:00,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423689890] [2021-07-13 18:59:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:00,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:00,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423689890] [2021-07-13 18:59:00,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423689890] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:00,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:00,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:00,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773968923] [2021-07-13 18:59:00,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:00,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:00,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:00,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:00,681 INFO L87 Difference]: Start difference. First operand 4012 states and 10660 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:01,427 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:59:01,583 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:59:01,718 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:59:01,889 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:02,038 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:59:02,265 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:59:02,442 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:59:02,677 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 18:59:02,861 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:59:03,101 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 18:59:03,445 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:03,624 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:59:03,835 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:59:04,097 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:59:04,316 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:04,556 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:59:04,934 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:59:05,143 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 18:59:05,290 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:59:05,508 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 18:59:05,665 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 18:59:05,892 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 18:59:06,045 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 18:59:06,284 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 18:59:06,432 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:06,636 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 18:59:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:06,647 INFO L93 Difference]: Finished difference Result 8029 states and 20342 transitions. [2021-07-13 18:59:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 18:59:06,647 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:06,657 INFO L225 Difference]: With dead ends: 8029 [2021-07-13 18:59:06,657 INFO L226 Difference]: Without dead ends: 8029 [2021-07-13 18:59:06,657 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 5368.7ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 18:59:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2021-07-13 18:59:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 4072. [2021-07-13 18:59:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 4070 states have (on average 2.6633906633906634) internal successors, (10840), 4071 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 10840 transitions. [2021-07-13 18:59:06,727 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 10840 transitions. Word has length 94 [2021-07-13 18:59:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:06,727 INFO L482 AbstractCegarLoop]: Abstraction has 4072 states and 10840 transitions. [2021-07-13 18:59:06,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 10840 transitions. [2021-07-13 18:59:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:06,732 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:06,732 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:06,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-13 18:59:06,732 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1318465623, now seen corresponding path program 46 times [2021-07-13 18:59:06,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:06,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867153845] [2021-07-13 18:59:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:07,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:07,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867153845] [2021-07-13 18:59:07,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867153845] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:07,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:07,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:07,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821763831] [2021-07-13 18:59:07,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:07,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:07,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:07,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:07,295 INFO L87 Difference]: Start difference. First operand 4072 states and 10840 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:07,937 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-07-13 18:59:08,074 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:59:08,227 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:59:08,359 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:59:08,529 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:08,681 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:59:08,880 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:59:09,086 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 18:59:09,310 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:59:09,679 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:09,858 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:59:10,089 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:59:10,299 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:10,522 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:59:10,720 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:10,965 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:59:11,382 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:59:11,576 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 18:59:11,725 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:59:11,927 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 18:59:12,112 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 18:59:12,322 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 18:59:12,510 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:12,655 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 18:59:12,855 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:59:13,013 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:13,209 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:13,220 INFO L93 Difference]: Finished difference Result 8298 states and 20802 transitions. [2021-07-13 18:59:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 18:59:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:13,229 INFO L225 Difference]: With dead ends: 8298 [2021-07-13 18:59:13,229 INFO L226 Difference]: Without dead ends: 8298 [2021-07-13 18:59:13,230 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5264.8ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 18:59:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2021-07-13 18:59:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 4060. [2021-07-13 18:59:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4060 states, 4058 states have (on average 2.6623952686052244) internal successors, (10804), 4059 states have internal predecessors, (10804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4060 states to 4060 states and 10804 transitions. [2021-07-13 18:59:13,298 INFO L78 Accepts]: Start accepts. Automaton has 4060 states and 10804 transitions. Word has length 94 [2021-07-13 18:59:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:13,298 INFO L482 AbstractCegarLoop]: Abstraction has 4060 states and 10804 transitions. [2021-07-13 18:59:13,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4060 states and 10804 transitions. [2021-07-13 18:59:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:13,302 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:13,303 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:13,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-13 18:59:13,303 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:13,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1011472371, now seen corresponding path program 47 times [2021-07-13 18:59:13,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:13,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864977177] [2021-07-13 18:59:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:13,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:13,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864977177] [2021-07-13 18:59:13,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864977177] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:13,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:13,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:13,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797146018] [2021-07-13 18:59:13,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:13,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:13,913 INFO L87 Difference]: Start difference. First operand 4060 states and 10804 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:14,657 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 18:59:14,815 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 18:59:14,951 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 18:59:15,125 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:15,277 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:59:15,476 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:59:15,928 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:16,102 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:59:16,260 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:59:16,465 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:59:16,676 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:16,899 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:59:17,096 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:17,335 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:59:17,735 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:59:17,918 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:59:18,045 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:59:18,227 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:59:18,391 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 18:59:18,588 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 18:59:18,760 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:59:18,906 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 18:59:19,089 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 18:59:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:19,332 INFO L93 Difference]: Finished difference Result 8342 states and 20900 transitions. [2021-07-13 18:59:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 18:59:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:19,342 INFO L225 Difference]: With dead ends: 8342 [2021-07-13 18:59:19,342 INFO L226 Difference]: Without dead ends: 8342 [2021-07-13 18:59:19,342 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4851.4ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 18:59:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2021-07-13 18:59:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 4036. [2021-07-13 18:59:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4034 states have (on average 2.66038671294001) internal successors, (10732), 4035 states have internal predecessors, (10732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 10732 transitions. [2021-07-13 18:59:19,412 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 10732 transitions. Word has length 94 [2021-07-13 18:59:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:19,412 INFO L482 AbstractCegarLoop]: Abstraction has 4036 states and 10732 transitions. [2021-07-13 18:59:19,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:19,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 10732 transitions. [2021-07-13 18:59:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:19,417 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:19,417 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:19,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-13 18:59:19,417 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:19,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:19,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1090492779, now seen corresponding path program 48 times [2021-07-13 18:59:19,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:19,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121416502] [2021-07-13 18:59:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:20,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:20,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121416502] [2021-07-13 18:59:20,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121416502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:20,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:20,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:20,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229684018] [2021-07-13 18:59:20,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:20,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:20,005 INFO L87 Difference]: Start difference. First operand 4036 states and 10732 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:21,109 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 18:59:21,543 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:59:21,683 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:21,853 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:59:22,010 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:59:22,214 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:59:22,416 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:22,634 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:59:22,826 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:23,060 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:59:23,485 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:59:23,639 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:59:23,785 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:59:23,949 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 18:59:24,105 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 18:59:24,274 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 18:59:24,425 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:59:24,567 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 18:59:24,727 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 18:59:24,877 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:25,033 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:59:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:25,043 INFO L93 Difference]: Finished difference Result 8397 states and 21021 transitions. [2021-07-13 18:59:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 18:59:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:25,053 INFO L225 Difference]: With dead ends: 8397 [2021-07-13 18:59:25,053 INFO L226 Difference]: Without dead ends: 8397 [2021-07-13 18:59:25,053 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4449.2ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 18:59:25,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states. [2021-07-13 18:59:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 4024. [2021-07-13 18:59:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4022 states have (on average 2.659373446046743) internal successors, (10696), 4023 states have internal predecessors, (10696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 10696 transitions. [2021-07-13 18:59:25,149 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 10696 transitions. Word has length 94 [2021-07-13 18:59:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:25,150 INFO L482 AbstractCegarLoop]: Abstraction has 4024 states and 10696 transitions. [2021-07-13 18:59:25,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 10696 transitions. [2021-07-13 18:59:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:25,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:25,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:25,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-13 18:59:25,154 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:25,156 INFO L82 PathProgramCache]: Analyzing trace with hash 163388005, now seen corresponding path program 49 times [2021-07-13 18:59:25,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:25,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614634922] [2021-07-13 18:59:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:25,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:25,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614634922] [2021-07-13 18:59:25,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614634922] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:25,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:25,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:25,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634342109] [2021-07-13 18:59:25,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:25,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:25,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:25,723 INFO L87 Difference]: Start difference. First operand 4024 states and 10696 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:26,944 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:59:27,095 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:59:27,239 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:27,412 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 18:59:27,570 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 18:59:27,767 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:59:27,972 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:28,198 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 18:59:28,391 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:28,630 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:59:29,011 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 18:59:29,156 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 18:59:29,309 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 18:59:29,440 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 18:59:29,581 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 18:59:29,729 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 18:59:29,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:29,736 INFO L93 Difference]: Finished difference Result 6854 states and 17318 transitions. [2021-07-13 18:59:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 18:59:29,736 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:29,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:29,743 INFO L225 Difference]: With dead ends: 6854 [2021-07-13 18:59:29,744 INFO L226 Difference]: Without dead ends: 6854 [2021-07-13 18:59:29,744 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3549.9ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 18:59:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2021-07-13 18:59:29,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 4012. [2021-07-13 18:59:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4012 states, 4010 states have (on average 2.658354114713217) internal successors, (10660), 4011 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4012 states to 4012 states and 10660 transitions. [2021-07-13 18:59:29,802 INFO L78 Accepts]: Start accepts. Automaton has 4012 states and 10660 transitions. Word has length 94 [2021-07-13 18:59:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:29,802 INFO L482 AbstractCegarLoop]: Abstraction has 4012 states and 10660 transitions. [2021-07-13 18:59:29,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4012 states and 10660 transitions. [2021-07-13 18:59:29,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:29,806 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:29,806 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:29,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-13 18:59:29,806 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:29,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1921150093, now seen corresponding path program 50 times [2021-07-13 18:59:29,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:29,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339944921] [2021-07-13 18:59:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:30,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:30,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339944921] [2021-07-13 18:59:30,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339944921] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:30,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:30,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:59:30,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659733540] [2021-07-13 18:59:30,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:59:30,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:30,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:59:30,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:59:30,075 INFO L87 Difference]: Start difference. First operand 4012 states and 10660 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:30,967 INFO L93 Difference]: Finished difference Result 4903 states and 12400 transitions. [2021-07-13 18:59:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 18:59:30,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:30,974 INFO L225 Difference]: With dead ends: 4903 [2021-07-13 18:59:30,974 INFO L226 Difference]: Without dead ends: 4903 [2021-07-13 18:59:30,974 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 818.4ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 18:59:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2021-07-13 18:59:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4056. [2021-07-13 18:59:31,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4054 states have (on average 2.6556487419832266) internal successors, (10766), 4055 states have internal predecessors, (10766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 10766 transitions. [2021-07-13 18:59:31,028 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 10766 transitions. Word has length 94 [2021-07-13 18:59:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:31,028 INFO L482 AbstractCegarLoop]: Abstraction has 4056 states and 10766 transitions. [2021-07-13 18:59:31,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 10766 transitions. [2021-07-13 18:59:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:31,032 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:31,032 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:31,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-13 18:59:31,032 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1291874953, now seen corresponding path program 51 times [2021-07-13 18:59:31,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:31,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027910381] [2021-07-13 18:59:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:31,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:31,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027910381] [2021-07-13 18:59:31,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027910381] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:31,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:31,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:31,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949853000] [2021-07-13 18:59:31,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:31,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:31,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:31,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:31,462 INFO L87 Difference]: Start difference. First operand 4056 states and 10766 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:32,173 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-07-13 18:59:32,333 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:32,491 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:59:32,861 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:33,040 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:59:33,245 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:59:33,462 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:59:33,729 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 18:59:33,896 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 18:59:34,055 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 18:59:34,254 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 18:59:34,397 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:34,560 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 18:59:34,727 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 18:59:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:34,736 INFO L93 Difference]: Finished difference Result 6674 states and 17084 transitions. [2021-07-13 18:59:34,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:59:34,736 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:34,743 INFO L225 Difference]: With dead ends: 6674 [2021-07-13 18:59:34,744 INFO L226 Difference]: Without dead ends: 6674 [2021-07-13 18:59:34,744 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2891.1ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:59:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2021-07-13 18:59:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 4260. [2021-07-13 18:59:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4258 states have (on average 2.6707374354156883) internal successors, (11372), 4259 states have internal predecessors, (11372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 11372 transitions. [2021-07-13 18:59:34,807 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 11372 transitions. Word has length 94 [2021-07-13 18:59:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:34,807 INFO L482 AbstractCegarLoop]: Abstraction has 4260 states and 11372 transitions. [2021-07-13 18:59:34,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 11372 transitions. [2021-07-13 18:59:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:34,811 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:34,811 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:34,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-13 18:59:34,812 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:34,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:34,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1426694759, now seen corresponding path program 52 times [2021-07-13 18:59:34,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:34,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765092595] [2021-07-13 18:59:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:35,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:35,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765092595] [2021-07-13 18:59:35,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765092595] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:35,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:35,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:35,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97882404] [2021-07-13 18:59:35,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:35,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:35,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:35,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:35,292 INFO L87 Difference]: Start difference. First operand 4260 states and 11372 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:35,878 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-07-13 18:59:36,165 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:36,325 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:59:36,539 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:59:36,930 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:59:37,137 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:59:37,350 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:59:37,664 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:37,868 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:59:38,054 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:38,248 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:59:38,417 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:59:38,598 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 18:59:38,783 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 18:59:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:38,790 INFO L93 Difference]: Finished difference Result 7648 states and 19455 transitions. [2021-07-13 18:59:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:59:38,791 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:38,800 INFO L225 Difference]: With dead ends: 7648 [2021-07-13 18:59:38,800 INFO L226 Difference]: Without dead ends: 7648 [2021-07-13 18:59:38,800 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3136.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:59:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7648 states. [2021-07-13 18:59:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7648 to 4296. [2021-07-13 18:59:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.673497904052166) internal successors, (11480), 4295 states have internal predecessors, (11480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11480 transitions. [2021-07-13 18:59:38,869 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11480 transitions. Word has length 94 [2021-07-13 18:59:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:38,869 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11480 transitions. [2021-07-13 18:59:38,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11480 transitions. [2021-07-13 18:59:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:38,874 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:38,874 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:38,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-13 18:59:38,874 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1716800137, now seen corresponding path program 53 times [2021-07-13 18:59:38,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:38,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938309385] [2021-07-13 18:59:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:39,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:39,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938309385] [2021-07-13 18:59:39,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938309385] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:39,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:39,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:39,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189950152] [2021-07-13 18:59:39,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:39,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:39,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:39,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:39,371 INFO L87 Difference]: Start difference. First operand 4296 states and 11480 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:40,260 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:40,418 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:59:40,634 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:59:40,852 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 18:59:41,079 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 18:59:41,490 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:59:41,697 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:59:42,031 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 18:59:42,244 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 18:59:42,467 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 18:59:42,683 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 18:59:42,900 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:59:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:42,908 INFO L93 Difference]: Finished difference Result 7336 states and 18871 transitions. [2021-07-13 18:59:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 18:59:42,908 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:42,917 INFO L225 Difference]: With dead ends: 7336 [2021-07-13 18:59:42,917 INFO L226 Difference]: Without dead ends: 7336 [2021-07-13 18:59:42,918 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3135.5ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 18:59:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2021-07-13 18:59:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 4260. [2021-07-13 18:59:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4258 states have (on average 2.6707374354156883) internal successors, (11372), 4259 states have internal predecessors, (11372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 11372 transitions. [2021-07-13 18:59:42,989 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 11372 transitions. Word has length 94 [2021-07-13 18:59:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:42,989 INFO L482 AbstractCegarLoop]: Abstraction has 4260 states and 11372 transitions. [2021-07-13 18:59:42,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 11372 transitions. [2021-07-13 18:59:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:42,993 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:42,993 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:42,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-13 18:59:42,994 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2011024801, now seen corresponding path program 54 times [2021-07-13 18:59:42,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:42,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732504535] [2021-07-13 18:59:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:43,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:43,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732504535] [2021-07-13 18:59:43,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732504535] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:43,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:43,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:43,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274575355] [2021-07-13 18:59:43,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:43,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:43,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:43,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:43,522 INFO L87 Difference]: Start difference. First operand 4260 states and 11372 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:44,377 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:44,715 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 18:59:44,865 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-07-13 18:59:45,059 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:59:45,287 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:59:45,513 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 18:59:45,782 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 18:59:45,925 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:59:46,069 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 18:59:46,222 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-07-13 18:59:46,350 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 18:59:46,497 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:59:46,644 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 18:59:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:46,652 INFO L93 Difference]: Finished difference Result 7114 states and 18017 transitions. [2021-07-13 18:59:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:59:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:46,661 INFO L225 Difference]: With dead ends: 7114 [2021-07-13 18:59:46,661 INFO L226 Difference]: Without dead ends: 7114 [2021-07-13 18:59:46,662 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2817.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:59:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2021-07-13 18:59:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4264. [2021-07-13 18:59:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 2.670577193805725) internal successors, (11382), 4263 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:46,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 11382 transitions. [2021-07-13 18:59:46,731 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 11382 transitions. Word has length 94 [2021-07-13 18:59:46,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:46,732 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 11382 transitions. [2021-07-13 18:59:46,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 11382 transitions. [2021-07-13 18:59:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:46,736 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:46,736 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:46,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-13 18:59:46,737 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2070693385, now seen corresponding path program 55 times [2021-07-13 18:59:46,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:46,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935054788] [2021-07-13 18:59:46,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:47,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:47,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935054788] [2021-07-13 18:59:47,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935054788] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:47,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:47,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:47,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601078159] [2021-07-13 18:59:47,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:47,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:47,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:47,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:47,240 INFO L87 Difference]: Start difference. First operand 4264 states and 11382 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:48,128 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:48,490 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 18:59:48,653 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:48,849 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 18:59:49,076 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 18:59:49,310 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 18:59:49,618 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 18:59:49,764 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:59:49,908 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 18:59:50,060 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-07-13 18:59:50,187 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 18:59:50,335 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:59:50,488 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 18:59:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:50,495 INFO L93 Difference]: Finished difference Result 7198 states and 18130 transitions. [2021-07-13 18:59:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:59:50,496 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:50,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:50,505 INFO L225 Difference]: With dead ends: 7198 [2021-07-13 18:59:50,505 INFO L226 Difference]: Without dead ends: 7198 [2021-07-13 18:59:50,505 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2817.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:59:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7198 states. [2021-07-13 18:59:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7198 to 4266. [2021-07-13 18:59:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4264 states have (on average 2.670497185741088) internal successors, (11387), 4265 states have internal predecessors, (11387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 11387 transitions. [2021-07-13 18:59:50,607 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 11387 transitions. Word has length 94 [2021-07-13 18:59:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:50,607 INFO L482 AbstractCegarLoop]: Abstraction has 4266 states and 11387 transitions. [2021-07-13 18:59:50,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 11387 transitions. [2021-07-13 18:59:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:50,611 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:50,611 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:50,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-13 18:59:50,611 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash -389679639, now seen corresponding path program 56 times [2021-07-13 18:59:50,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:50,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298887517] [2021-07-13 18:59:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:51,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:51,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:51,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298887517] [2021-07-13 18:59:51,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298887517] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:51,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:51,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:51,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15295788] [2021-07-13 18:59:51,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:51,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:51,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:51,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:51,107 INFO L87 Difference]: Start difference. First operand 4266 states and 11387 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:51,942 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:52,262 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 18:59:52,428 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 18:59:52,645 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 18:59:52,854 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 18:59:53,040 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 18:59:53,258 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 18:59:53,546 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 18:59:53,693 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 18:59:53,838 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 18:59:53,991 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-07-13 18:59:54,120 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 18:59:54,274 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 18:59:54,448 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 18:59:54,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:54,456 INFO L93 Difference]: Finished difference Result 6996 states and 17726 transitions. [2021-07-13 18:59:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 18:59:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:54,464 INFO L225 Difference]: With dead ends: 6996 [2021-07-13 18:59:54,464 INFO L226 Difference]: Without dead ends: 6996 [2021-07-13 18:59:54,465 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3043.0ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 18:59:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2021-07-13 18:59:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 4264. [2021-07-13 18:59:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 2.670577193805725) internal successors, (11382), 4263 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 11382 transitions. [2021-07-13 18:59:54,528 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 11382 transitions. Word has length 94 [2021-07-13 18:59:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:54,529 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 11382 transitions. [2021-07-13 18:59:54,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 11382 transitions. [2021-07-13 18:59:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:54,533 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:54,533 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:54,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-13 18:59:54,534 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash -593312649, now seen corresponding path program 57 times [2021-07-13 18:59:54,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:54,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390035330] [2021-07-13 18:59:54,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:55,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:55,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390035330] [2021-07-13 18:59:55,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390035330] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:55,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:55,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:55,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831715237] [2021-07-13 18:59:55,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:55,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:55,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:55,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:55,034 INFO L87 Difference]: Start difference. First operand 4264 states and 11382 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:55,876 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 18:59:56,061 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 18:59:56,265 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 18:59:56,651 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:59:56,852 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 18:59:57,058 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 18:59:57,373 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 18:59:57,554 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 18:59:57,738 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 18:59:57,929 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 18:59:58,124 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 18:59:58,300 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 18:59:58,471 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 18:59:58,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:58,478 INFO L93 Difference]: Finished difference Result 8594 states and 21773 transitions. [2021-07-13 18:59:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 18:59:58,478 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 18:59:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:58,488 INFO L225 Difference]: With dead ends: 8594 [2021-07-13 18:59:58,488 INFO L226 Difference]: Without dead ends: 8594 [2021-07-13 18:59:58,488 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3091.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 18:59:58,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2021-07-13 18:59:58,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 4312. [2021-07-13 18:59:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4310 states have (on average 2.674245939675174) internal successors, (11526), 4311 states have internal predecessors, (11526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 11526 transitions. [2021-07-13 18:59:58,564 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 11526 transitions. Word has length 94 [2021-07-13 18:59:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:58,564 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 11526 transitions. [2021-07-13 18:59:58,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 11526 transitions. [2021-07-13 18:59:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 18:59:58,569 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:58,569 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:58,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-13 18:59:58,569 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash -883418027, now seen corresponding path program 58 times [2021-07-13 18:59:58,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:58,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013541508] [2021-07-13 18:59:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:59,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:59,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013541508] [2021-07-13 18:59:59,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013541508] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:59,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:59,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 18:59:59,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064996280] [2021-07-13 18:59:59,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 18:59:59,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 18:59:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 18:59:59,060 INFO L87 Difference]: Start difference. First operand 4312 states and 11526 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:59,794 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-07-13 18:59:59,964 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:00:00,161 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:00:00,351 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:00:00,579 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:00:00,811 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:00:01,237 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:00:01,447 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:00:01,818 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:00:02,030 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:00:02,253 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:00:02,471 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:00:02,690 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:00:02,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:02,698 INFO L93 Difference]: Finished difference Result 9268 states and 23569 transitions. [2021-07-13 19:00:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:00:02,698 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:02,711 INFO L225 Difference]: With dead ends: 9268 [2021-07-13 19:00:02,711 INFO L226 Difference]: Without dead ends: 9268 [2021-07-13 19:00:02,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3165.9ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:00:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2021-07-13 19:00:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 4276. [2021-07-13 19:00:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6715021057557324) internal successors, (11418), 4275 states have internal predecessors, (11418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11418 transitions. [2021-07-13 19:00:02,796 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11418 transitions. Word has length 94 [2021-07-13 19:00:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:02,797 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11418 transitions. [2021-07-13 19:00:02,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11418 transitions. [2021-07-13 19:00:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:02,802 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:02,802 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:02,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-13 19:00:02,802 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1514333117, now seen corresponding path program 59 times [2021-07-13 19:00:02,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:02,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634724758] [2021-07-13 19:00:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:03,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:03,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634724758] [2021-07-13 19:00:03,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634724758] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:03,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:03,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:03,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279246637] [2021-07-13 19:00:03,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:03,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:03,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:03,303 INFO L87 Difference]: Start difference. First operand 4276 states and 11418 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:04,181 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:00:04,367 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:00:04,741 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:04,918 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:00:05,134 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:00:05,359 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:00:05,710 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:00:05,881 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:00:06,052 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:00:06,230 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:00:06,379 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:06,551 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:00:06,726 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:00:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:06,736 INFO L93 Difference]: Finished difference Result 8218 states and 20781 transitions. [2021-07-13 19:00:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:00:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:06,747 INFO L225 Difference]: With dead ends: 8218 [2021-07-13 19:00:06,747 INFO L226 Difference]: Without dead ends: 8218 [2021-07-13 19:00:06,748 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3011.7ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:00:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8218 states. [2021-07-13 19:00:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8218 to 4278. [2021-07-13 19:00:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4276 states have (on average 2.671421889616464) internal successors, (11423), 4277 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 11423 transitions. [2021-07-13 19:00:06,824 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 11423 transitions. Word has length 94 [2021-07-13 19:00:06,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:06,825 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 11423 transitions. [2021-07-13 19:00:06,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 11423 transitions. [2021-07-13 19:00:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:06,830 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:06,834 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:06,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-13 19:00:06,834 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1012098425, now seen corresponding path program 60 times [2021-07-13 19:00:06,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:06,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659425309] [2021-07-13 19:00:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:07,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:07,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659425309] [2021-07-13 19:00:07,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659425309] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:07,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:07,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:07,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663164021] [2021-07-13 19:00:07,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:07,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:07,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:07,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:07,535 INFO L87 Difference]: Start difference. First operand 4278 states and 11423 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:08,391 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:00:08,576 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:00:08,918 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:09,107 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:00:09,343 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:00:09,536 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:09,760 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:00:10,094 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:00:10,266 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:00:10,435 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:00:10,610 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:00:10,764 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:10,931 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:00:11,100 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:00:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:11,108 INFO L93 Difference]: Finished difference Result 8200 states and 20743 transitions. [2021-07-13 19:00:11,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:00:11,108 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:11,119 INFO L225 Difference]: With dead ends: 8200 [2021-07-13 19:00:11,120 INFO L226 Difference]: Without dead ends: 8200 [2021-07-13 19:00:11,120 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3387.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:00:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2021-07-13 19:00:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 4276. [2021-07-13 19:00:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6715021057557324) internal successors, (11418), 4275 states have internal predecessors, (11418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:11,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11418 transitions. [2021-07-13 19:00:11,221 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11418 transitions. Word has length 94 [2021-07-13 19:00:11,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:11,221 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11418 transitions. [2021-07-13 19:00:11,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:11,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11418 transitions. [2021-07-13 19:00:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:11,225 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:11,225 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:11,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-13 19:00:11,226 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -336911417, now seen corresponding path program 61 times [2021-07-13 19:00:11,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:11,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243791287] [2021-07-13 19:00:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:11,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:11,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243791287] [2021-07-13 19:00:11,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243791287] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:11,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:11,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:11,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203633474] [2021-07-13 19:00:11,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:11,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:11,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:11,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:11,750 INFO L87 Difference]: Start difference. First operand 4276 states and 11418 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:12,603 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:00:12,797 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:00:13,012 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 19:00:13,225 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-07-13 19:00:13,404 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:00:13,629 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-07-13 19:00:14,054 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-07-13 19:00:14,243 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:14,462 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:00:14,768 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 19:00:14,947 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-07-13 19:00:15,085 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:00:15,239 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-07-13 19:00:15,384 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:00:15,544 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-07-13 19:00:15,676 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 19:00:15,825 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:00:15,965 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:16,109 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:00:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:16,118 INFO L93 Difference]: Finished difference Result 8573 states and 21772 transitions. [2021-07-13 19:00:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:00:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:16,129 INFO L225 Difference]: With dead ends: 8573 [2021-07-13 19:00:16,129 INFO L226 Difference]: Without dead ends: 8573 [2021-07-13 19:00:16,129 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3971.6ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:00:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8573 states. [2021-07-13 19:00:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8573 to 4288. [2021-07-13 19:00:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 2.672421838544097) internal successors, (11454), 4287 states have internal predecessors, (11454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11454 transitions. [2021-07-13 19:00:16,222 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11454 transitions. Word has length 94 [2021-07-13 19:00:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:16,223 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11454 transitions. [2021-07-13 19:00:16,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11454 transitions. [2021-07-13 19:00:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:16,228 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:16,228 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:16,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-13 19:00:16,228 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash 700908481, now seen corresponding path program 62 times [2021-07-13 19:00:16,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:16,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784011141] [2021-07-13 19:00:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:16,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:16,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784011141] [2021-07-13 19:00:16,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784011141] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:16,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:16,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:16,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270283648] [2021-07-13 19:00:16,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:16,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:16,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:16,749 INFO L87 Difference]: Start difference. First operand 4288 states and 11454 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:17,771 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 19:00:17,922 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:00:18,221 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:00:18,374 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:00:18,553 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:18,781 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:00:19,166 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 19:00:19,357 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:00:19,581 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:00:19,762 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:00:19,959 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 19:00:20,162 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:20,169 INFO L93 Difference]: Finished difference Result 7742 states and 19691 transitions. [2021-07-13 19:00:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:00:20,170 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:20,181 INFO L225 Difference]: With dead ends: 7742 [2021-07-13 19:00:20,181 INFO L226 Difference]: Without dead ends: 7742 [2021-07-13 19:00:20,181 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3041.4ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:00:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2021-07-13 19:00:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 4264. [2021-07-13 19:00:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4262 states have (on average 2.670577193805725) internal successors, (11382), 4263 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 11382 transitions. [2021-07-13 19:00:20,262 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 11382 transitions. Word has length 94 [2021-07-13 19:00:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:20,263 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 11382 transitions. [2021-07-13 19:00:20,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 11382 transitions. [2021-07-13 19:00:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:20,267 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:20,268 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:20,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-13 19:00:20,268 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:20,269 INFO L82 PathProgramCache]: Analyzing trace with hash 723352183, now seen corresponding path program 63 times [2021-07-13 19:00:20,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:20,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677059886] [2021-07-13 19:00:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:20,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:20,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677059886] [2021-07-13 19:00:20,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677059886] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:20,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:20,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:20,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41632869] [2021-07-13 19:00:20,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:20,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:20,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:20,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:20,754 INFO L87 Difference]: Start difference. First operand 4264 states and 11382 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:21,353 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-07-13 19:00:21,973 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:00:22,138 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-07-13 19:00:22,353 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:00:22,583 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:00:22,826 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:00:23,225 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:00:23,387 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:00:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:23,748 INFO L93 Difference]: Finished difference Result 7252 states and 18347 transitions. [2021-07-13 19:00:23,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:00:23,749 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:23,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:23,756 INFO L225 Difference]: With dead ends: 7252 [2021-07-13 19:00:23,756 INFO L226 Difference]: Without dead ends: 7252 [2021-07-13 19:00:23,757 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2656.5ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:00:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2021-07-13 19:00:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 4276. [2021-07-13 19:00:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6700982686008423) internal successors, (11412), 4275 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11412 transitions. [2021-07-13 19:00:23,828 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11412 transitions. Word has length 94 [2021-07-13 19:00:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:23,828 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11412 transitions. [2021-07-13 19:00:23,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11412 transitions. [2021-07-13 19:00:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:23,833 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:23,833 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:23,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-13 19:00:23,833 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:23,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:23,834 INFO L82 PathProgramCache]: Analyzing trace with hash 663683599, now seen corresponding path program 64 times [2021-07-13 19:00:23,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:23,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367270441] [2021-07-13 19:00:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:24,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:24,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367270441] [2021-07-13 19:00:24,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367270441] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:24,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:24,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:24,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245032602] [2021-07-13 19:00:24,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:24,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:24,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:24,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:24,296 INFO L87 Difference]: Start difference. First operand 4276 states and 11412 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:25,419 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:00:25,578 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:00:25,734 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:00:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:26,531 INFO L93 Difference]: Finished difference Result 7730 states and 19283 transitions. [2021-07-13 19:00:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:00:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:26,540 INFO L225 Difference]: With dead ends: 7730 [2021-07-13 19:00:26,540 INFO L226 Difference]: Without dead ends: 7730 [2021-07-13 19:00:26,540 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1970.9ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:00:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2021-07-13 19:00:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 4278. [2021-07-13 19:00:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4276 states have (on average 2.6700187090739007) internal successors, (11417), 4277 states have internal predecessors, (11417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 11417 transitions. [2021-07-13 19:00:26,614 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 11417 transitions. Word has length 94 [2021-07-13 19:00:26,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:26,614 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 11417 transitions. [2021-07-13 19:00:26,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 11417 transitions. [2021-07-13 19:00:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:26,618 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:26,618 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:26,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-13 19:00:26,619 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:26,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1950269951, now seen corresponding path program 65 times [2021-07-13 19:00:26,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:26,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65710226] [2021-07-13 19:00:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:27,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:27,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65710226] [2021-07-13 19:00:27,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65710226] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:27,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:27,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:27,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120888552] [2021-07-13 19:00:27,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:27,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:27,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:27,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:27,026 INFO L87 Difference]: Start difference. First operand 4278 states and 11417 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:28,279 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:00:28,421 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:28,593 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:00:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:29,415 INFO L93 Difference]: Finished difference Result 7528 states and 18879 transitions. [2021-07-13 19:00:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:00:29,415 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:29,424 INFO L225 Difference]: With dead ends: 7528 [2021-07-13 19:00:29,424 INFO L226 Difference]: Without dead ends: 7528 [2021-07-13 19:00:29,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2111.0ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:00:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2021-07-13 19:00:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 4272. [2021-07-13 19:00:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 2.670257611241218) internal successors, (11402), 4271 states have internal predecessors, (11402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 11402 transitions. [2021-07-13 19:00:29,489 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 11402 transitions. Word has length 94 [2021-07-13 19:00:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:29,490 INFO L482 AbstractCegarLoop]: Abstraction has 4272 states and 11402 transitions. [2021-07-13 19:00:29,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 11402 transitions. [2021-07-13 19:00:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:29,494 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:29,494 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:29,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-13 19:00:29,494 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:29,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:29,495 INFO L82 PathProgramCache]: Analyzing trace with hash 911251703, now seen corresponding path program 66 times [2021-07-13 19:00:29,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:29,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965060868] [2021-07-13 19:00:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:29,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:29,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965060868] [2021-07-13 19:00:29,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965060868] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:29,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:29,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:29,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199055232] [2021-07-13 19:00:29,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:29,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:29,885 INFO L87 Difference]: Start difference. First operand 4272 states and 11402 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:31,189 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:00:31,343 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:00:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:32,128 INFO L93 Difference]: Finished difference Result 7362 states and 18509 transitions. [2021-07-13 19:00:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:00:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:32,136 INFO L225 Difference]: With dead ends: 7362 [2021-07-13 19:00:32,137 INFO L226 Difference]: Without dead ends: 7362 [2021-07-13 19:00:32,137 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1977.6ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:00:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2021-07-13 19:00:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 4278. [2021-07-13 19:00:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4276 states have (on average 2.6700187090739007) internal successors, (11417), 4277 states have internal predecessors, (11417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 11417 transitions. [2021-07-13 19:00:32,205 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 11417 transitions. Word has length 94 [2021-07-13 19:00:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:32,205 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 11417 transitions. [2021-07-13 19:00:32,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 11417 transitions. [2021-07-13 19:00:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:32,210 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:32,210 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:32,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-13 19:00:32,210 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:32,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1702701847, now seen corresponding path program 67 times [2021-07-13 19:00:32,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:32,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881973248] [2021-07-13 19:00:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:32,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:32,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881973248] [2021-07-13 19:00:32,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881973248] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:32,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:32,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:32,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301492103] [2021-07-13 19:00:32,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:32,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:32,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:32,611 INFO L87 Difference]: Start difference. First operand 4278 states and 11417 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:33,636 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:00:33,823 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:34,021 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:00:34,232 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:00:34,414 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:00:34,638 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:00:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:35,534 INFO L93 Difference]: Finished difference Result 7636 states and 19036 transitions. [2021-07-13 19:00:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:00:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:35,543 INFO L225 Difference]: With dead ends: 7636 [2021-07-13 19:00:35,543 INFO L226 Difference]: Without dead ends: 7636 [2021-07-13 19:00:35,543 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2483.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:00:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2021-07-13 19:00:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 4276. [2021-07-13 19:00:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6700982686008423) internal successors, (11412), 4275 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11412 transitions. [2021-07-13 19:00:35,616 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11412 transitions. Word has length 94 [2021-07-13 19:00:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:35,616 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11412 transitions. [2021-07-13 19:00:35,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11412 transitions. [2021-07-13 19:00:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:35,620 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:35,621 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:35,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-13 19:00:35,621 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash -612408525, now seen corresponding path program 68 times [2021-07-13 19:00:35,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:35,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916712490] [2021-07-13 19:00:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:36,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:36,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916712490] [2021-07-13 19:00:36,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916712490] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:36,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:36,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:36,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324277151] [2021-07-13 19:00:36,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:36,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:36,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:36,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:36,054 INFO L87 Difference]: Start difference. First operand 4276 states and 11412 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:37,301 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:00:37,455 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:00:37,593 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:00:37,782 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:00:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:38,636 INFO L93 Difference]: Finished difference Result 7158 states and 18100 transitions. [2021-07-13 19:00:38,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:00:38,637 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:38,646 INFO L225 Difference]: With dead ends: 7158 [2021-07-13 19:00:38,646 INFO L226 Difference]: Without dead ends: 7158 [2021-07-13 19:00:38,646 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2305.1ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:00:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2021-07-13 19:00:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 4272. [2021-07-13 19:00:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 2.670257611241218) internal successors, (11402), 4271 states have internal predecessors, (11402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 11402 transitions. [2021-07-13 19:00:38,721 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 11402 transitions. Word has length 94 [2021-07-13 19:00:38,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:38,721 INFO L482 AbstractCegarLoop]: Abstraction has 4272 states and 11402 transitions. [2021-07-13 19:00:38,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 11402 transitions. [2021-07-13 19:00:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:38,725 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:38,725 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:38,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-13 19:00:38,726 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:38,726 INFO L82 PathProgramCache]: Analyzing trace with hash -987117543, now seen corresponding path program 69 times [2021-07-13 19:00:38,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:38,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785312078] [2021-07-13 19:00:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:39,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:39,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785312078] [2021-07-13 19:00:39,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785312078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:39,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:39,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:39,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210471042] [2021-07-13 19:00:39,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:39,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:39,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:39,276 INFO L87 Difference]: Start difference. First operand 4272 states and 11402 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:40,111 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:00:40,311 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:00:40,517 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:00:40,896 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:00:41,104 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:00:41,275 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:00:41,574 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:00:41,757 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:00:41,944 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:00:42,142 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:00:42,314 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:00:42,499 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:00:42,690 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:00:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:42,697 INFO L93 Difference]: Finished difference Result 8956 states and 22744 transitions. [2021-07-13 19:00:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:00:42,698 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:42,709 INFO L225 Difference]: With dead ends: 8956 [2021-07-13 19:00:42,709 INFO L226 Difference]: Without dead ends: 8956 [2021-07-13 19:00:42,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3143.3ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:00:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2021-07-13 19:00:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 4344. [2021-07-13 19:00:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 2.6757254721326578) internal successors, (11618), 4343 states have internal predecessors, (11618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 11618 transitions. [2021-07-13 19:00:42,844 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 11618 transitions. Word has length 94 [2021-07-13 19:00:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:42,844 INFO L482 AbstractCegarLoop]: Abstraction has 4344 states and 11618 transitions. [2021-07-13 19:00:42,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 11618 transitions. [2021-07-13 19:00:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:42,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:42,848 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:42,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-13 19:00:42,849 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1277222921, now seen corresponding path program 70 times [2021-07-13 19:00:42,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:42,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882628118] [2021-07-13 19:00:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:43,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:43,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882628118] [2021-07-13 19:00:43,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882628118] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:43,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:43,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:43,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49660291] [2021-07-13 19:00:43,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:43,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:43,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:43,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:43,350 INFO L87 Difference]: Start difference. First operand 4344 states and 11618 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:44,595 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:00:44,754 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:00:45,055 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:00:45,201 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:00:45,448 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:00:45,590 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:00:45,740 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:00:45,913 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:00:46,056 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:00:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:46,061 INFO L93 Difference]: Finished difference Result 9630 states and 24540 transitions. [2021-07-13 19:00:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:00:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:46,072 INFO L225 Difference]: With dead ends: 9630 [2021-07-13 19:00:46,072 INFO L226 Difference]: Without dead ends: 9630 [2021-07-13 19:00:46,072 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2451.8ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:00:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9630 states. [2021-07-13 19:00:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9630 to 4308. [2021-07-13 19:00:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4306 states have (on average 2.673014398513702) internal successors, (11510), 4307 states have internal predecessors, (11510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 11510 transitions. [2021-07-13 19:00:46,149 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 11510 transitions. Word has length 94 [2021-07-13 19:00:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:46,149 INFO L482 AbstractCegarLoop]: Abstraction has 4308 states and 11510 transitions. [2021-07-13 19:00:46,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 11510 transitions. [2021-07-13 19:00:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:46,154 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:46,154 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:46,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-13 19:00:46,154 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:46,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1120528223, now seen corresponding path program 71 times [2021-07-13 19:00:46,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:46,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237921058] [2021-07-13 19:00:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:46,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:46,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237921058] [2021-07-13 19:00:46,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237921058] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:46,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:46,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:46,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689252611] [2021-07-13 19:00:46,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:46,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:46,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:46,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:46,637 INFO L87 Difference]: Start difference. First operand 4308 states and 11510 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:47,360 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:00:47,580 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:00:48,001 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:48,195 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:00:48,434 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:00:48,668 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:00:49,007 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:00:49,179 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:00:49,349 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:00:49,526 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:00:49,675 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:00:49,877 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:00:50,055 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:00:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:50,066 INFO L93 Difference]: Finished difference Result 9404 states and 23743 transitions. [2021-07-13 19:00:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:00:50,066 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:50,077 INFO L225 Difference]: With dead ends: 9404 [2021-07-13 19:00:50,078 INFO L226 Difference]: Without dead ends: 9404 [2021-07-13 19:00:50,078 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3003.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:00:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2021-07-13 19:00:50,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 4310. [2021-07-13 19:00:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4308 states have (on average 2.6729340761374187) internal successors, (11515), 4309 states have internal predecessors, (11515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 11515 transitions. [2021-07-13 19:00:50,161 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 11515 transitions. Word has length 94 [2021-07-13 19:00:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:50,162 INFO L482 AbstractCegarLoop]: Abstraction has 4310 states and 11515 transitions. [2021-07-13 19:00:50,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 11515 transitions. [2021-07-13 19:00:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:50,176 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:50,176 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:50,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-13 19:00:50,176 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:50,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1405903319, now seen corresponding path program 72 times [2021-07-13 19:00:50,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:50,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030857771] [2021-07-13 19:00:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:50,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:50,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030857771] [2021-07-13 19:00:50,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030857771] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:50,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:50,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:50,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314722533] [2021-07-13 19:00:50,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:50,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:50,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:50,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:50,728 INFO L87 Difference]: Start difference. First operand 4310 states and 11515 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:52,173 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:00:52,314 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:00:52,452 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:00:52,600 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:00:53,233 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:00:53,602 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:00:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:53,607 INFO L93 Difference]: Finished difference Result 9386 states and 23705 transitions. [2021-07-13 19:00:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:00:53,608 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:53,618 INFO L225 Difference]: With dead ends: 9386 [2021-07-13 19:00:53,618 INFO L226 Difference]: Without dead ends: 9386 [2021-07-13 19:00:53,618 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2588.3ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:00:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9386 states. [2021-07-13 19:00:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9386 to 4308. [2021-07-13 19:00:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4306 states have (on average 2.673014398513702) internal successors, (11510), 4307 states have internal predecessors, (11510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 11510 transitions. [2021-07-13 19:00:53,696 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 11510 transitions. Word has length 94 [2021-07-13 19:00:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:53,697 INFO L482 AbstractCegarLoop]: Abstraction has 4308 states and 11510 transitions. [2021-07-13 19:00:53,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 11510 transitions. [2021-07-13 19:00:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:53,701 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:53,701 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:53,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-13 19:00:53,702 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash -730716311, now seen corresponding path program 73 times [2021-07-13 19:00:53,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:53,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103931441] [2021-07-13 19:00:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:54,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:54,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103931441] [2021-07-13 19:00:54,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103931441] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:54,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:54,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:54,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576126080] [2021-07-13 19:00:54,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:54,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:54,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:54,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:54,128 INFO L87 Difference]: Start difference. First operand 4308 states and 11510 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:55,223 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:00:55,361 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:00:55,534 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:00:55,889 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:00:56,015 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:00:56,166 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:00:56,435 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:00:56,573 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:00:56,704 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:00:56,850 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:00:57,018 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:00:57,165 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:00:57,311 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:00:57,486 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:00:57,621 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:00:57,775 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:00:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:57,783 INFO L93 Difference]: Finished difference Result 10847 states and 27385 transitions. [2021-07-13 19:00:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:00:57,784 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:00:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:57,795 INFO L225 Difference]: With dead ends: 10847 [2021-07-13 19:00:57,796 INFO L226 Difference]: Without dead ends: 10847 [2021-07-13 19:00:57,796 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3266.3ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:00:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2021-07-13 19:00:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 4320. [2021-07-13 19:00:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4318 states have (on average 2.6739231125521075) internal successors, (11546), 4319 states have internal predecessors, (11546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:57,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 11546 transitions. [2021-07-13 19:00:57,879 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 11546 transitions. Word has length 94 [2021-07-13 19:00:57,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:57,879 INFO L482 AbstractCegarLoop]: Abstraction has 4320 states and 11546 transitions. [2021-07-13 19:00:57,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 11546 transitions. [2021-07-13 19:00:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:00:57,883 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:57,883 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:57,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-13 19:00:57,883 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:57,884 INFO L82 PathProgramCache]: Analyzing trace with hash 307103587, now seen corresponding path program 74 times [2021-07-13 19:00:57,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:57,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354324940] [2021-07-13 19:00:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:58,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:58,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354324940] [2021-07-13 19:00:58,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354324940] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:58,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:58,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:00:58,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635650934] [2021-07-13 19:00:58,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:00:58,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:58,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:00:58,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:00:58,325 INFO L87 Difference]: Start difference. First operand 4320 states and 11546 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:59,252 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:00:59,427 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:00:59,703 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:00:59,845 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:00,036 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:00,277 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:00,676 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:01:00,870 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:01:01,073 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:01:01,254 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:01,447 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:01:01,642 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:01,649 INFO L93 Difference]: Finished difference Result 10016 states and 25304 transitions. [2021-07-13 19:01:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:01:01,650 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:01,662 INFO L225 Difference]: With dead ends: 10016 [2021-07-13 19:01:01,662 INFO L226 Difference]: Without dead ends: 10016 [2021-07-13 19:01:01,662 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2967.5ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:01:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2021-07-13 19:01:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 4296. [2021-07-13 19:01:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.672100605496041) internal successors, (11474), 4295 states have internal predecessors, (11474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11474 transitions. [2021-07-13 19:01:01,754 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11474 transitions. Word has length 94 [2021-07-13 19:01:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:01,754 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11474 transitions. [2021-07-13 19:01:01,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11474 transitions. [2021-07-13 19:01:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:01,759 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:01,759 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:01,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-13 19:01:01,759 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash 334162005, now seen corresponding path program 75 times [2021-07-13 19:01:01,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:01,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093713426] [2021-07-13 19:01:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:02,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:02,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093713426] [2021-07-13 19:01:02,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093713426] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:02,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:02,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:02,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103445387] [2021-07-13 19:01:02,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:02,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:02,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:02,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:02,292 INFO L87 Difference]: Start difference. First operand 4296 states and 11474 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:03,071 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-07-13 19:01:03,238 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:01:03,632 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:03,801 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:03,951 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:01:04,105 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:01:04,261 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:01:04,879 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:01:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:05,246 INFO L93 Difference]: Finished difference Result 8578 states and 21721 transitions. [2021-07-13 19:01:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:01:05,246 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:05,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:05,257 INFO L225 Difference]: With dead ends: 8578 [2021-07-13 19:01:05,257 INFO L226 Difference]: Without dead ends: 8578 [2021-07-13 19:01:05,257 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2623.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:01:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8578 states. [2021-07-13 19:01:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8578 to 4302. [2021-07-13 19:01:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4300 states have (on average 2.671860465116279) internal successors, (11489), 4301 states have internal predecessors, (11489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 11489 transitions. [2021-07-13 19:01:05,337 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 11489 transitions. Word has length 94 [2021-07-13 19:01:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:05,337 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 11489 transitions. [2021-07-13 19:01:05,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 11489 transitions. [2021-07-13 19:01:05,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:05,342 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:05,342 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:05,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-13 19:01:05,342 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2102697759, now seen corresponding path program 76 times [2021-07-13 19:01:05,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:05,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350347190] [2021-07-13 19:01:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:05,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:05,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350347190] [2021-07-13 19:01:05,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350347190] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:05,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:05,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:05,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872779916] [2021-07-13 19:01:05,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:05,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:05,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:05,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:05,892 INFO L87 Difference]: Start difference. First operand 4302 states and 11489 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:06,957 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:07,119 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:07,304 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:07,511 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:07,714 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:07,939 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:08,276 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:01:08,435 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:01:08,587 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:01:08,776 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:01:08,931 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:09,121 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:01:09,292 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:01:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:09,302 INFO L93 Difference]: Finished difference Result 8852 states and 22248 transitions. [2021-07-13 19:01:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:01:09,302 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:09,312 INFO L225 Difference]: With dead ends: 8852 [2021-07-13 19:01:09,312 INFO L226 Difference]: Without dead ends: 8852 [2021-07-13 19:01:09,313 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3112.8ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:01:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8852 states. [2021-07-13 19:01:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8852 to 4300. [2021-07-13 19:01:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4298 states have (on average 2.6719404374127502) internal successors, (11484), 4299 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 11484 transitions. [2021-07-13 19:01:09,391 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 11484 transitions. Word has length 94 [2021-07-13 19:01:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:09,391 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 11484 transitions. [2021-07-13 19:01:09,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 11484 transitions. [2021-07-13 19:01:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:09,395 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:09,396 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:09,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-13 19:01:09,396 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:09,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1567445589, now seen corresponding path program 77 times [2021-07-13 19:01:09,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:09,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110198925] [2021-07-13 19:01:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:09,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:09,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110198925] [2021-07-13 19:01:09,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110198925] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:09,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:09,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:09,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970963697] [2021-07-13 19:01:09,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:09,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:09,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:09,909 INFO L87 Difference]: Start difference. First operand 4300 states and 11484 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:10,768 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:01:11,132 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:11,315 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:01:11,449 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:01:11,575 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:11,726 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:11,857 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:12,021 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:12,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:12,939 INFO L93 Difference]: Finished difference Result 8602 states and 21774 transitions. [2021-07-13 19:01:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:01:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:12,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:12,977 INFO L225 Difference]: With dead ends: 8602 [2021-07-13 19:01:12,978 INFO L226 Difference]: Without dead ends: 8602 [2021-07-13 19:01:12,978 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2714.3ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:01:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8602 states. [2021-07-13 19:01:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8602 to 4296. [2021-07-13 19:01:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.672100605496041) internal successors, (11474), 4295 states have internal predecessors, (11474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11474 transitions. [2021-07-13 19:01:13,046 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11474 transitions. Word has length 94 [2021-07-13 19:01:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:13,047 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11474 transitions. [2021-07-13 19:01:13,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11474 transitions. [2021-07-13 19:01:13,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:13,051 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:13,051 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:13,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-13 19:01:13,051 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:13,052 INFO L82 PathProgramCache]: Analyzing trace with hash -930854093, now seen corresponding path program 78 times [2021-07-13 19:01:13,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:13,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341602494] [2021-07-13 19:01:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:13,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:13,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341602494] [2021-07-13 19:01:13,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341602494] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:13,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:13,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:13,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400037803] [2021-07-13 19:01:13,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:13,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:13,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:13,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:13,455 INFO L87 Difference]: Start difference. First operand 4296 states and 11474 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:14,261 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:01:14,441 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:14,632 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:01:14,830 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:01:15,078 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:01:15,258 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:01:15,496 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:01:15,877 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:01:16,098 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:01:16,288 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:16,521 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:01:16,896 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:01:17,101 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:01:17,277 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:01:17,514 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:01:17,699 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:01:17,922 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:01:18,125 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:01:18,340 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:01:18,524 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:01:18,733 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:01:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:18,743 INFO L93 Difference]: Finished difference Result 8964 states and 22796 transitions. [2021-07-13 19:01:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:01:18,744 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:18,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:18,754 INFO L225 Difference]: With dead ends: 8964 [2021-07-13 19:01:18,754 INFO L226 Difference]: Without dead ends: 8964 [2021-07-13 19:01:18,754 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4687.3ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:01:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8964 states. [2021-07-13 19:01:18,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8964 to 4332. [2021-07-13 19:01:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4330 states have (on average 2.6748267898383373) internal successors, (11582), 4331 states have internal predecessors, (11582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 11582 transitions. [2021-07-13 19:01:18,831 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 11582 transitions. Word has length 94 [2021-07-13 19:01:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:18,831 INFO L482 AbstractCegarLoop]: Abstraction has 4332 states and 11582 transitions. [2021-07-13 19:01:18,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 11582 transitions. [2021-07-13 19:01:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:18,836 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:18,836 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:18,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-13 19:01:18,837 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash 106965805, now seen corresponding path program 79 times [2021-07-13 19:01:18,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:18,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642508722] [2021-07-13 19:01:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:19,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:19,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642508722] [2021-07-13 19:01:19,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642508722] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:19,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:19,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:19,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315354269] [2021-07-13 19:01:19,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:19,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:19,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:19,382 INFO L87 Difference]: Start difference. First operand 4332 states and 11582 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:20,273 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:01:20,455 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:20,696 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:01:20,915 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:01:21,160 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:01:21,541 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:01:21,664 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:21,840 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:21,970 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:22,139 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:22,575 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:01:22,724 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:01:22,887 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:01:23,077 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:01:23,291 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:01:23,487 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:23,672 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:01:23,911 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:01:24,128 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:01:24,331 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:24,342 INFO L93 Difference]: Finished difference Result 9233 states and 23256 transitions. [2021-07-13 19:01:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:01:24,343 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:24,353 INFO L225 Difference]: With dead ends: 9233 [2021-07-13 19:01:24,353 INFO L226 Difference]: Without dead ends: 9233 [2021-07-13 19:01:24,353 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4400.1ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:01:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2021-07-13 19:01:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 4320. [2021-07-13 19:01:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4318 states have (on average 2.6739231125521075) internal successors, (11546), 4319 states have internal predecessors, (11546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 11546 transitions. [2021-07-13 19:01:24,436 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 11546 transitions. Word has length 94 [2021-07-13 19:01:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:24,436 INFO L482 AbstractCegarLoop]: Abstraction has 4320 states and 11546 transitions. [2021-07-13 19:01:24,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 11546 transitions. [2021-07-13 19:01:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:24,440 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:24,441 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:24,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-13 19:01:24,441 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:24,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1858063497, now seen corresponding path program 80 times [2021-07-13 19:01:24,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:24,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300415581] [2021-07-13 19:01:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:24,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:24,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300415581] [2021-07-13 19:01:24,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300415581] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:24,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:24,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:24,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028391253] [2021-07-13 19:01:24,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:24,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:24,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:24,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:24,906 INFO L87 Difference]: Start difference. First operand 4320 states and 11546 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:26,414 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:26,564 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:26,704 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:26,867 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:27,281 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:01:27,454 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:01:27,719 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:01:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:27,852 INFO L93 Difference]: Finished difference Result 8060 states and 20509 transitions. [2021-07-13 19:01:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:01:27,852 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:27,863 INFO L225 Difference]: With dead ends: 8060 [2021-07-13 19:01:27,863 INFO L226 Difference]: Without dead ends: 8060 [2021-07-13 19:01:27,863 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2612.1ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:01:27,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2021-07-13 19:01:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 4272. [2021-07-13 19:01:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 2.670257611241218) internal successors, (11402), 4271 states have internal predecessors, (11402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 11402 transitions. [2021-07-13 19:01:27,936 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 11402 transitions. Word has length 94 [2021-07-13 19:01:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:27,936 INFO L482 AbstractCegarLoop]: Abstraction has 4272 states and 11402 transitions. [2021-07-13 19:01:27,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 11402 transitions. [2021-07-13 19:01:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:27,941 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:27,941 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:27,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-07-13 19:01:27,941 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:27,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash -833785609, now seen corresponding path program 81 times [2021-07-13 19:01:27,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:27,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094476992] [2021-07-13 19:01:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:28,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:28,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094476992] [2021-07-13 19:01:28,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094476992] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:28,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:28,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:28,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143476076] [2021-07-13 19:01:28,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:28,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:28,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:28,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:28,332 INFO L87 Difference]: Start difference. First operand 4272 states and 11402 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:29,603 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:01:29,761 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:01:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:30,522 INFO L93 Difference]: Finished difference Result 7390 states and 18677 transitions. [2021-07-13 19:01:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:01:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:30,532 INFO L225 Difference]: With dead ends: 7390 [2021-07-13 19:01:30,532 INFO L226 Difference]: Without dead ends: 7390 [2021-07-13 19:01:30,532 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1922.3ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:01:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2021-07-13 19:01:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 4288. [2021-07-13 19:01:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 2.6696220251983203) internal successors, (11442), 4287 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11442 transitions. [2021-07-13 19:01:30,608 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11442 transitions. Word has length 94 [2021-07-13 19:01:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:30,608 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11442 transitions. [2021-07-13 19:01:30,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11442 transitions. [2021-07-13 19:01:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:30,614 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:30,614 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:30,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-07-13 19:01:30,614 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:30,615 INFO L82 PathProgramCache]: Analyzing trace with hash -893454193, now seen corresponding path program 82 times [2021-07-13 19:01:30,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:30,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840712061] [2021-07-13 19:01:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:31,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:31,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840712061] [2021-07-13 19:01:31,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840712061] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:31,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:31,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:31,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692095995] [2021-07-13 19:01:31,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:31,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:31,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:31,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:31,150 INFO L87 Difference]: Start difference. First operand 4288 states and 11442 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:32,340 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:01:32,764 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:01:33,038 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:01:33,474 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-07-13 19:01:33,721 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-13 19:01:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:34,081 INFO L93 Difference]: Finished difference Result 7868 states and 19613 transitions. [2021-07-13 19:01:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:01:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:34,091 INFO L225 Difference]: With dead ends: 7868 [2021-07-13 19:01:34,091 INFO L226 Difference]: Without dead ends: 7868 [2021-07-13 19:01:34,091 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2550.8ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:01:34,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7868 states. [2021-07-13 19:01:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7868 to 4290. [2021-07-13 19:01:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4288 states have (on average 2.669542910447761) internal successors, (11447), 4289 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 11447 transitions. [2021-07-13 19:01:34,165 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 11447 transitions. Word has length 94 [2021-07-13 19:01:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:34,165 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 11447 transitions. [2021-07-13 19:01:34,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 11447 transitions. [2021-07-13 19:01:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:34,169 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:34,169 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:34,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-07-13 19:01:34,169 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:34,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:34,170 INFO L82 PathProgramCache]: Analyzing trace with hash 787559553, now seen corresponding path program 83 times [2021-07-13 19:01:34,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:34,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795935668] [2021-07-13 19:01:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:34,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:34,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795935668] [2021-07-13 19:01:34,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795935668] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:34,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:34,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:34,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757771552] [2021-07-13 19:01:34,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:34,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:34,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:34,671 INFO L87 Difference]: Start difference. First operand 4290 states and 11447 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:35,802 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:01:35,982 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:36,194 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:01:36,442 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:01:36,628 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:01:36,851 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:37,510 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-13 19:01:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:37,848 INFO L93 Difference]: Finished difference Result 7666 states and 19209 transitions. [2021-07-13 19:01:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:01:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:37,857 INFO L225 Difference]: With dead ends: 7666 [2021-07-13 19:01:37,857 INFO L226 Difference]: Without dead ends: 7666 [2021-07-13 19:01:37,858 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2863.1ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:01:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2021-07-13 19:01:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 4284. [2021-07-13 19:01:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4282 states have (on average 2.669780476412891) internal successors, (11432), 4283 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 11432 transitions. [2021-07-13 19:01:37,932 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 11432 transitions. Word has length 94 [2021-07-13 19:01:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:37,932 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 11432 transitions. [2021-07-13 19:01:37,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 11432 transitions. [2021-07-13 19:01:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:37,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:37,937 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:37,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-07-13 19:01:37,937 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:37,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:37,937 INFO L82 PathProgramCache]: Analyzing trace with hash -645886089, now seen corresponding path program 84 times [2021-07-13 19:01:37,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:37,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593610263] [2021-07-13 19:01:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:38,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:38,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593610263] [2021-07-13 19:01:38,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593610263] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:38,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:38,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:38,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743353863] [2021-07-13 19:01:38,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:38,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:38,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:38,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:38,426 INFO L87 Difference]: Start difference. First operand 4284 states and 11432 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:39,640 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:39,865 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:40,063 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:01:40,298 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:01:40,552 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:01:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:41,336 INFO L93 Difference]: Finished difference Result 7940 states and 19772 transitions. [2021-07-13 19:01:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:01:41,337 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:41,347 INFO L225 Difference]: With dead ends: 7940 [2021-07-13 19:01:41,347 INFO L226 Difference]: Without dead ends: 7940 [2021-07-13 19:01:41,347 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2477.5ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:01:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2021-07-13 19:01:41,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 4290. [2021-07-13 19:01:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4288 states have (on average 2.669542910447761) internal successors, (11447), 4289 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 11447 transitions. [2021-07-13 19:01:41,424 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 11447 transitions. Word has length 94 [2021-07-13 19:01:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:41,424 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 11447 transitions. [2021-07-13 19:01:41,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 11447 transitions. [2021-07-13 19:01:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:41,428 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:41,429 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:41,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-07-13 19:01:41,429 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:41,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1035127657, now seen corresponding path program 85 times [2021-07-13 19:01:41,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:41,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168219737] [2021-07-13 19:01:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:41,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:41,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168219737] [2021-07-13 19:01:41,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168219737] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:41,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:41,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:41,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142791504] [2021-07-13 19:01:41,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:41,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:41,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:41,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:41,830 INFO L87 Difference]: Start difference. First operand 4290 states and 11447 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:42,841 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:43,014 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:43,242 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:43,442 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:43,718 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:44,428 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-13 19:01:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:44,789 INFO L93 Difference]: Finished difference Result 8214 states and 20299 transitions. [2021-07-13 19:01:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:01:44,790 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:44,800 INFO L225 Difference]: With dead ends: 8214 [2021-07-13 19:01:44,800 INFO L226 Difference]: Without dead ends: 8214 [2021-07-13 19:01:44,800 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2584.6ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:01:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2021-07-13 19:01:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 4288. [2021-07-13 19:01:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 2.6696220251983203) internal successors, (11442), 4287 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11442 transitions. [2021-07-13 19:01:44,879 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11442 transitions. Word has length 94 [2021-07-13 19:01:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:44,879 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11442 transitions. [2021-07-13 19:01:44,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11442 transitions. [2021-07-13 19:01:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:44,884 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:44,884 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:44,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-07-13 19:01:44,884 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:44,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:44,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2125420979, now seen corresponding path program 86 times [2021-07-13 19:01:44,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:44,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641536969] [2021-07-13 19:01:44,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:45,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:45,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641536969] [2021-07-13 19:01:45,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641536969] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:45,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:45,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:45,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816985016] [2021-07-13 19:01:45,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:45,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:45,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:45,284 INFO L87 Difference]: Start difference. First operand 4288 states and 11442 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:46,382 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:46,535 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:01:46,798 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:46,953 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:47,088 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:47,265 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:48,041 INFO L93 Difference]: Finished difference Result 7736 states and 19363 transitions. [2021-07-13 19:01:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:01:48,041 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:48,049 INFO L225 Difference]: With dead ends: 7736 [2021-07-13 19:01:48,050 INFO L226 Difference]: Without dead ends: 7736 [2021-07-13 19:01:48,050 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2381.8ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:01:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2021-07-13 19:01:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 4276. [2021-07-13 19:01:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6700982686008423) internal successors, (11412), 4275 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11412 transitions. [2021-07-13 19:01:48,118 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11412 transitions. Word has length 94 [2021-07-13 19:01:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:48,118 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11412 transitions. [2021-07-13 19:01:48,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11412 transitions. [2021-07-13 19:01:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:48,123 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:48,123 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:48,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-07-13 19:01:48,123 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:48,123 INFO L82 PathProgramCache]: Analyzing trace with hash -629715273, now seen corresponding path program 87 times [2021-07-13 19:01:48,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:48,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84824609] [2021-07-13 19:01:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:48,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:48,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84824609] [2021-07-13 19:01:48,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84824609] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:48,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:48,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:48,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876588218] [2021-07-13 19:01:48,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:48,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:48,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:48,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:48,542 INFO L87 Difference]: Start difference. First operand 4276 states and 11412 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:49,740 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:01:49,896 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:01:50,054 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:01:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:50,772 INFO L93 Difference]: Finished difference Result 7480 states and 18778 transitions. [2021-07-13 19:01:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:01:50,772 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:50,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:50,782 INFO L225 Difference]: With dead ends: 7480 [2021-07-13 19:01:50,782 INFO L226 Difference]: Without dead ends: 7480 [2021-07-13 19:01:50,782 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1989.5ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:01:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-07-13 19:01:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 4284. [2021-07-13 19:01:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4282 states have (on average 2.669780476412891) internal successors, (11432), 4283 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 11432 transitions. [2021-07-13 19:01:50,852 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 11432 transitions. Word has length 94 [2021-07-13 19:01:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:50,853 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 11432 transitions. [2021-07-13 19:01:50,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 11432 transitions. [2021-07-13 19:01:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:50,857 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:50,857 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:50,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-07-13 19:01:50,857 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1051298473, now seen corresponding path program 88 times [2021-07-13 19:01:50,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:50,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771280945] [2021-07-13 19:01:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:51,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:51,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771280945] [2021-07-13 19:01:51,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771280945] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:51,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:51,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:51,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710153734] [2021-07-13 19:01:51,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:51,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:51,441 INFO L87 Difference]: Start difference. First operand 4284 states and 11432 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:52,446 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:01:52,593 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:01:52,783 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:01:52,983 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:53,195 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:53,383 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:53,631 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:54,314 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-13 19:01:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:54,681 INFO L93 Difference]: Finished difference Result 7754 states and 19305 transitions. [2021-07-13 19:01:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:01:54,681 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:54,704 INFO L225 Difference]: With dead ends: 7754 [2021-07-13 19:01:54,704 INFO L226 Difference]: Without dead ends: 7754 [2021-07-13 19:01:54,705 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2835.6ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:01:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2021-07-13 19:01:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 4282. [2021-07-13 19:01:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4280 states have (on average 2.6698598130841122) internal successors, (11427), 4281 states have internal predecessors, (11427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 11427 transitions. [2021-07-13 19:01:54,788 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 11427 transitions. Word has length 94 [2021-07-13 19:01:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:54,788 INFO L482 AbstractCegarLoop]: Abstraction has 4282 states and 11427 transitions. [2021-07-13 19:01:54,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 11427 transitions. [2021-07-13 19:01:54,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:54,795 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:54,795 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:54,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-07-13 19:01:54,795 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:54,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2141591795, now seen corresponding path program 89 times [2021-07-13 19:01:54,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:54,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035959150] [2021-07-13 19:01:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:55,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:55,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035959150] [2021-07-13 19:01:55,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035959150] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:55,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:55,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:55,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816444315] [2021-07-13 19:01:55,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:55,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:55,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:55,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:55,388 INFO L87 Difference]: Start difference. First operand 4282 states and 11427 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:56,675 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:01:56,830 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:01:56,957 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:01:57,122 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:01:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:57,900 INFO L93 Difference]: Finished difference Result 7820 states and 19449 transitions. [2021-07-13 19:01:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:01:57,901 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:01:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:57,909 INFO L225 Difference]: With dead ends: 7820 [2021-07-13 19:01:57,909 INFO L226 Difference]: Without dead ends: 7820 [2021-07-13 19:01:57,910 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2291.9ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:01:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2021-07-13 19:01:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 4278. [2021-07-13 19:01:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4276 states have (on average 2.6700187090739007) internal successors, (11417), 4277 states have internal predecessors, (11417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:57,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 11417 transitions. [2021-07-13 19:01:57,978 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 11417 transitions. Word has length 94 [2021-07-13 19:01:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:57,978 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 11417 transitions. [2021-07-13 19:01:57,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 11417 transitions. [2021-07-13 19:01:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:01:57,983 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:57,983 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:57,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-07-13 19:01:57,983 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1293452177, now seen corresponding path program 90 times [2021-07-13 19:01:57,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:57,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448603603] [2021-07-13 19:01:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:58,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:58,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448603603] [2021-07-13 19:01:58,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448603603] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:58,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:58,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:01:58,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019923216] [2021-07-13 19:01:58,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:01:58,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:01:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:01:58,522 INFO L87 Difference]: Start difference. First operand 4278 states and 11417 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:59,418 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-07-13 19:01:59,566 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:01:59,727 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:01:59,898 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:02:00,051 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:02:00,255 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:00,471 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:00,698 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:00,888 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:01,122 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:01,809 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-07-13 19:02:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:02,169 INFO L93 Difference]: Finished difference Result 7272 states and 18359 transitions. [2021-07-13 19:02:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:02:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:02,178 INFO L225 Difference]: With dead ends: 7272 [2021-07-13 19:02:02,178 INFO L226 Difference]: Without dead ends: 7272 [2021-07-13 19:02:02,178 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3315.4ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:02:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-07-13 19:02:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 4276. [2021-07-13 19:02:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6700982686008423) internal successors, (11412), 4275 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11412 transitions. [2021-07-13 19:02:02,245 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11412 transitions. Word has length 94 [2021-07-13 19:02:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:02,245 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11412 transitions. [2021-07-13 19:02:02,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11412 transitions. [2021-07-13 19:02:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:02,250 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:02,250 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:02,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-07-13 19:02:02,251 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash -439323303, now seen corresponding path program 91 times [2021-07-13 19:02:02,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:02,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908162779] [2021-07-13 19:02:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:02,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:02,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908162779] [2021-07-13 19:02:02,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908162779] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:02,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:02,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:02,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783697788] [2021-07-13 19:02:02,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:02,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:02,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:02,737 INFO L87 Difference]: Start difference. First operand 4276 states and 11412 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:03,666 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:03,862 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:02:04,102 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:02:04,576 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:02:04,728 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:02:05,087 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:02:05,219 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:05,402 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:02:05,574 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:02:05,761 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:02:05,951 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:02:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:05,958 INFO L93 Difference]: Finished difference Result 9314 states and 23705 transitions. [2021-07-13 19:02:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:02:05,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:05,971 INFO L225 Difference]: With dead ends: 9314 [2021-07-13 19:02:05,971 INFO L226 Difference]: Without dead ends: 9314 [2021-07-13 19:02:05,971 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2913.0ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:02:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2021-07-13 19:02:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 4360. [2021-07-13 19:02:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4360 states, 4358 states have (on average 2.6764570904084444) internal successors, (11664), 4359 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4360 states to 4360 states and 11664 transitions. [2021-07-13 19:02:06,082 INFO L78 Accepts]: Start accepts. Automaton has 4360 states and 11664 transitions. Word has length 94 [2021-07-13 19:02:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:06,082 INFO L482 AbstractCegarLoop]: Abstraction has 4360 states and 11664 transitions. [2021-07-13 19:02:06,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states and 11664 transitions. [2021-07-13 19:02:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:06,087 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:06,087 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:06,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-07-13 19:02:06,088 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:06,088 INFO L82 PathProgramCache]: Analyzing trace with hash -729428681, now seen corresponding path program 92 times [2021-07-13 19:02:06,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:06,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341270078] [2021-07-13 19:02:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:06,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:06,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341270078] [2021-07-13 19:02:06,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341270078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:06,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:06,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:06,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748536652] [2021-07-13 19:02:06,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:06,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:06,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:06,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:06,593 INFO L87 Difference]: Start difference. First operand 4360 states and 11664 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:07,349 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-07-13 19:02:07,503 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:07,717 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:02:07,910 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:02:08,137 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:02:08,402 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:02:08,832 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:02:08,982 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:02:09,221 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:02:09,411 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:02:09,647 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:02:09,875 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:02:10,105 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:02:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:10,112 INFO L93 Difference]: Finished difference Result 9988 states and 25501 transitions. [2021-07-13 19:02:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:02:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:10,126 INFO L225 Difference]: With dead ends: 9988 [2021-07-13 19:02:10,126 INFO L226 Difference]: Without dead ends: 9988 [2021-07-13 19:02:10,127 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3137.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:02:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9988 states. [2021-07-13 19:02:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9988 to 4324. [2021-07-13 19:02:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4322 states have (on average 2.6737621471540955) internal successors, (11556), 4323 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 11556 transitions. [2021-07-13 19:02:10,220 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 11556 transitions. Word has length 94 [2021-07-13 19:02:10,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:10,220 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 11556 transitions. [2021-07-13 19:02:10,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 11556 transitions. [2021-07-13 19:02:10,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:10,224 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:10,225 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:10,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-07-13 19:02:10,225 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1668322463, now seen corresponding path program 93 times [2021-07-13 19:02:10,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:10,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014650658] [2021-07-13 19:02:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:10,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:10,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014650658] [2021-07-13 19:02:10,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014650658] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:10,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:10,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:10,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940612859] [2021-07-13 19:02:10,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:10,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:10,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:10,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:10,748 INFO L87 Difference]: Start difference. First operand 4324 states and 11556 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:12,150 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:02:12,301 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:02:12,471 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:02:13,460 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:02:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:13,469 INFO L93 Difference]: Finished difference Result 9762 states and 24704 transitions. [2021-07-13 19:02:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:02:13,470 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:13,481 INFO L225 Difference]: With dead ends: 9762 [2021-07-13 19:02:13,481 INFO L226 Difference]: Without dead ends: 9762 [2021-07-13 19:02:13,481 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2411.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:02:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9762 states. [2021-07-13 19:02:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9762 to 4326. [2021-07-13 19:02:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4324 states have (on average 2.67368177613321) internal successors, (11561), 4325 states have internal predecessors, (11561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 11561 transitions. [2021-07-13 19:02:13,562 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 11561 transitions. Word has length 94 [2021-07-13 19:02:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:13,562 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 11561 transitions. [2021-07-13 19:02:13,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 11561 transitions. [2021-07-13 19:02:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:13,566 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:13,566 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:13,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-07-13 19:02:13,566 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:13,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:13,566 INFO L82 PathProgramCache]: Analyzing trace with hash -858109079, now seen corresponding path program 94 times [2021-07-13 19:02:13,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:13,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793003909] [2021-07-13 19:02:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:14,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:14,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793003909] [2021-07-13 19:02:14,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793003909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:14,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:14,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:14,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028905753] [2021-07-13 19:02:14,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:14,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:14,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:14,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:14,090 INFO L87 Difference]: Start difference. First operand 4326 states and 11561 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:14,971 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:15,203 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:02:15,588 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:15,796 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:16,020 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:16,211 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:16,431 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:16,821 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:02:16,998 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:02:17,166 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:02:17,344 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:02:17,501 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:17,669 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:17,848 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:02:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:17,855 INFO L93 Difference]: Finished difference Result 9744 states and 24666 transitions. [2021-07-13 19:02:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:02:17,856 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:17,868 INFO L225 Difference]: With dead ends: 9744 [2021-07-13 19:02:17,869 INFO L226 Difference]: Without dead ends: 9744 [2021-07-13 19:02:17,869 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3311.7ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:02:17,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2021-07-13 19:02:17,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 4324. [2021-07-13 19:02:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4322 states have (on average 2.6737621471540955) internal successors, (11556), 4323 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 11556 transitions. [2021-07-13 19:02:17,993 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 11556 transitions. Word has length 94 [2021-07-13 19:02:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:17,993 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 11556 transitions. [2021-07-13 19:02:17,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 11556 transitions. [2021-07-13 19:02:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:17,998 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:17,999 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:17,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-07-13 19:02:17,999 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash -182922071, now seen corresponding path program 95 times [2021-07-13 19:02:17,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:17,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514616370] [2021-07-13 19:02:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:18,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:18,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514616370] [2021-07-13 19:02:18,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514616370] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:18,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:18,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:18,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619625609] [2021-07-13 19:02:18,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:18,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:18,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:18,409 INFO L87 Difference]: Start difference. First operand 4324 states and 11556 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:19,499 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:02:19,635 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:02:19,798 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:02:20,131 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:02:20,285 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:20,433 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:02:20,811 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:02:21,010 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:02:21,200 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:02:21,359 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:02:21,498 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:02:21,645 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:02:21,785 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:02:21,926 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:02:22,088 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:22,225 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:02:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:22,233 INFO L93 Difference]: Finished difference Result 11205 states and 28346 transitions. [2021-07-13 19:02:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:02:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:22,247 INFO L225 Difference]: With dead ends: 11205 [2021-07-13 19:02:22,248 INFO L226 Difference]: Without dead ends: 11205 [2021-07-13 19:02:22,248 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3313.6ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:02:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11205 states. [2021-07-13 19:02:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11205 to 4336. [2021-07-13 19:02:22,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4334 states have (on average 2.6746654360867557) internal successors, (11592), 4335 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 11592 transitions. [2021-07-13 19:02:22,345 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 11592 transitions. Word has length 94 [2021-07-13 19:02:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:22,345 INFO L482 AbstractCegarLoop]: Abstraction has 4336 states and 11592 transitions. [2021-07-13 19:02:22,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 11592 transitions. [2021-07-13 19:02:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:22,350 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:22,350 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:22,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-07-13 19:02:22,350 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:22,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:22,350 INFO L82 PathProgramCache]: Analyzing trace with hash 854897827, now seen corresponding path program 96 times [2021-07-13 19:02:22,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:22,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295709801] [2021-07-13 19:02:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:22,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:22,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295709801] [2021-07-13 19:02:22,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295709801] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:22,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:22,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:22,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904260171] [2021-07-13 19:02:22,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:22,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:22,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:22,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:22,789 INFO L87 Difference]: Start difference. First operand 4336 states and 11592 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:23,717 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:02:23,953 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:02:24,169 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:02:24,542 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:24,740 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:24,926 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:25,149 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:25,524 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:02:25,717 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:02:25,921 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:02:26,098 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:26,319 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:02:26,514 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:26,521 INFO L93 Difference]: Finished difference Result 10374 states and 26265 transitions. [2021-07-13 19:02:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:02:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:26,534 INFO L225 Difference]: With dead ends: 10374 [2021-07-13 19:02:26,534 INFO L226 Difference]: Without dead ends: 10374 [2021-07-13 19:02:26,534 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3288.6ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:02:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2021-07-13 19:02:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 4312. [2021-07-13 19:02:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4310 states have (on average 2.6728538283062644) internal successors, (11520), 4311 states have internal predecessors, (11520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 11520 transitions. [2021-07-13 19:02:26,619 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 11520 transitions. Word has length 94 [2021-07-13 19:02:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:26,619 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 11520 transitions. [2021-07-13 19:02:26,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 11520 transitions. [2021-07-13 19:02:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:26,624 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:26,624 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:26,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-07-13 19:02:26,624 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash 881956245, now seen corresponding path program 97 times [2021-07-13 19:02:26,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:26,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851890420] [2021-07-13 19:02:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:27,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:27,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851890420] [2021-07-13 19:02:27,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851890420] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:27,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:27,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:27,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427129167] [2021-07-13 19:02:27,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:27,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:27,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:27,124 INFO L87 Difference]: Start difference. First operand 4312 states and 11520 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:28,008 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:28,445 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:28,612 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:28,767 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:02:28,955 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:02:29,148 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:02:29,596 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:02:29,748 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:02:29,909 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:02:30,041 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:30,195 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:02:30,357 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:02:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:30,367 INFO L93 Difference]: Finished difference Result 9878 states and 24990 transitions. [2021-07-13 19:02:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:02:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:30,379 INFO L225 Difference]: With dead ends: 9878 [2021-07-13 19:02:30,380 INFO L226 Difference]: Without dead ends: 9878 [2021-07-13 19:02:30,380 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2764.5ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:02:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9878 states. [2021-07-13 19:02:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9878 to 4318. [2021-07-13 19:02:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4316 states have (on average 2.672613531047266) internal successors, (11535), 4317 states have internal predecessors, (11535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 11535 transitions. [2021-07-13 19:02:30,488 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 11535 transitions. Word has length 94 [2021-07-13 19:02:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:30,488 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 11535 transitions. [2021-07-13 19:02:30,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 11535 transitions. [2021-07-13 19:02:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:30,492 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:30,493 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:30,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-07-13 19:02:30,493 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:30,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:30,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1644475297, now seen corresponding path program 98 times [2021-07-13 19:02:30,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:30,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037810386] [2021-07-13 19:02:30,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:30,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:30,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037810386] [2021-07-13 19:02:30,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037810386] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:30,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:30,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636584535] [2021-07-13 19:02:30,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:30,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:30,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:30,999 INFO L87 Difference]: Start difference. First operand 4318 states and 11535 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:31,843 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:32,202 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:32,451 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:32,626 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:32,784 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:32,973 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:33,301 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:02:33,456 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:02:33,607 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:02:33,766 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:02:33,901 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:34,056 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:02:34,217 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:02:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:34,226 INFO L93 Difference]: Finished difference Result 10152 states and 25517 transitions. [2021-07-13 19:02:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:02:34,227 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:34,239 INFO L225 Difference]: With dead ends: 10152 [2021-07-13 19:02:34,239 INFO L226 Difference]: Without dead ends: 10152 [2021-07-13 19:02:34,240 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2862.2ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:02:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2021-07-13 19:02:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 4316. [2021-07-13 19:02:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4314 states have (on average 2.672693555864627) internal successors, (11530), 4315 states have internal predecessors, (11530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 11530 transitions. [2021-07-13 19:02:34,324 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 11530 transitions. Word has length 94 [2021-07-13 19:02:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:34,324 INFO L482 AbstractCegarLoop]: Abstraction has 4316 states and 11530 transitions. [2021-07-13 19:02:34,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 11530 transitions. [2021-07-13 19:02:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:34,328 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:34,328 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:34,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-07-13 19:02:34,329 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:34,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2115239829, now seen corresponding path program 99 times [2021-07-13 19:02:34,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:34,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837498530] [2021-07-13 19:02:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:34,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:34,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837498530] [2021-07-13 19:02:34,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837498530] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:34,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:34,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:34,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838674962] [2021-07-13 19:02:34,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:34,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:34,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:34,883 INFO L87 Difference]: Start difference. First operand 4316 states and 11530 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:35,750 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:36,130 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:36,295 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:02:36,470 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:36,649 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:36,888 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:37,075 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:37,310 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:37,666 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:02:37,820 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:02:37,973 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:02:38,133 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:02:38,272 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:38,422 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:02:38,578 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:02:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:38,585 INFO L93 Difference]: Finished difference Result 9902 states and 25043 transitions. [2021-07-13 19:02:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:02:38,585 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:38,597 INFO L225 Difference]: With dead ends: 9902 [2021-07-13 19:02:38,597 INFO L226 Difference]: Without dead ends: 9902 [2021-07-13 19:02:38,597 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3266.9ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:02:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2021-07-13 19:02:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 4312. [2021-07-13 19:02:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4310 states have (on average 2.6728538283062644) internal successors, (11520), 4311 states have internal predecessors, (11520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:38,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 11520 transitions. [2021-07-13 19:02:38,677 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 11520 transitions. Word has length 94 [2021-07-13 19:02:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:38,677 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 11520 transitions. [2021-07-13 19:02:38,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:38,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 11520 transitions. [2021-07-13 19:02:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:38,682 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:38,682 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:38,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-07-13 19:02:38,682 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:38,682 INFO L82 PathProgramCache]: Analyzing trace with hash -383059853, now seen corresponding path program 100 times [2021-07-13 19:02:38,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:38,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847912020] [2021-07-13 19:02:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:39,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:39,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847912020] [2021-07-13 19:02:39,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847912020] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:39,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:39,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:39,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568367256] [2021-07-13 19:02:39,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:39,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:39,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:39,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:39,228 INFO L87 Difference]: Start difference. First operand 4312 states and 11520 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:40,114 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:40,296 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:40,489 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:02:40,684 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:02:40,907 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:02:41,085 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:02:41,346 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:02:41,745 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:41,975 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:02:42,161 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:42,396 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:02:42,788 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:02:42,988 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:02:43,161 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:02:43,369 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:02:43,553 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:02:43,810 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:02:43,990 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:02:44,197 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:02:44,378 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:44,578 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:02:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:44,588 INFO L93 Difference]: Finished difference Result 11556 states and 29258 transitions. [2021-07-13 19:02:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:02:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:44,602 INFO L225 Difference]: With dead ends: 11556 [2021-07-13 19:02:44,602 INFO L226 Difference]: Without dead ends: 11556 [2021-07-13 19:02:44,602 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4747.6ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:02:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11556 states. [2021-07-13 19:02:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11556 to 4348. [2021-07-13 19:02:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4348 states, 4346 states have (on average 2.675563736769443) internal successors, (11628), 4347 states have internal predecessors, (11628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4348 states to 4348 states and 11628 transitions. [2021-07-13 19:02:44,702 INFO L78 Accepts]: Start accepts. Automaton has 4348 states and 11628 transitions. Word has length 94 [2021-07-13 19:02:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:44,702 INFO L482 AbstractCegarLoop]: Abstraction has 4348 states and 11628 transitions. [2021-07-13 19:02:44,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4348 states and 11628 transitions. [2021-07-13 19:02:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:44,709 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:44,709 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:44,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-07-13 19:02:44,709 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:44,709 INFO L82 PathProgramCache]: Analyzing trace with hash 654760045, now seen corresponding path program 101 times [2021-07-13 19:02:44,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:44,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748419794] [2021-07-13 19:02:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:45,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:45,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748419794] [2021-07-13 19:02:45,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748419794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:45,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:45,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:45,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674337155] [2021-07-13 19:02:45,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:45,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:45,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:45,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:45,199 INFO L87 Difference]: Start difference. First operand 4348 states and 11628 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:46,053 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:46,233 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:46,427 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:02:46,621 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:02:46,839 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:02:47,257 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:47,445 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:47,658 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:47,844 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:48,103 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:48,520 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:02:48,703 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:02:48,877 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:02:49,068 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:02:49,250 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:02:49,449 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:02:49,627 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:49,798 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:02:49,988 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:02:50,170 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:50,384 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:50,394 INFO L93 Difference]: Finished difference Result 11825 states and 29718 transitions. [2021-07-13 19:02:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:02:50,395 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:50,408 INFO L225 Difference]: With dead ends: 11825 [2021-07-13 19:02:50,408 INFO L226 Difference]: Without dead ends: 11825 [2021-07-13 19:02:50,408 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4533.7ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:02:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11825 states. [2021-07-13 19:02:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11825 to 4336. [2021-07-13 19:02:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4334 states have (on average 2.6746654360867557) internal successors, (11592), 4335 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 11592 transitions. [2021-07-13 19:02:50,502 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 11592 transitions. Word has length 94 [2021-07-13 19:02:50,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:50,502 INFO L482 AbstractCegarLoop]: Abstraction has 4336 states and 11592 transitions. [2021-07-13 19:02:50,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 11592 transitions. [2021-07-13 19:02:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:50,507 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:50,507 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:50,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-07-13 19:02:50,507 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:50,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:50,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1310269257, now seen corresponding path program 102 times [2021-07-13 19:02:50,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:50,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292036896] [2021-07-13 19:02:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:51,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:51,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292036896] [2021-07-13 19:02:51,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292036896] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:51,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:51,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:51,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765629647] [2021-07-13 19:02:51,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:51,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:51,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:51,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:51,025 INFO L87 Difference]: Start difference. First operand 4336 states and 11592 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:51,887 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:02:52,065 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:52,276 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:02:52,697 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:02:52,872 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:53,057 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:02:53,266 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:02:53,453 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:02:53,680 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:02:54,049 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:02:54,224 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:02:54,407 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:02:54,567 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:02:54,769 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:02:54,945 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:02:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:54,952 INFO L93 Difference]: Finished difference Result 10652 states and 26971 transitions. [2021-07-13 19:02:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:02:54,952 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:54,964 INFO L225 Difference]: With dead ends: 10652 [2021-07-13 19:02:54,964 INFO L226 Difference]: Without dead ends: 10652 [2021-07-13 19:02:54,965 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3482.9ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:02:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10652 states. [2021-07-13 19:02:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 4288. [2021-07-13 19:02:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 2.6710219318712087) internal successors, (11448), 4287 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11448 transitions. [2021-07-13 19:02:55,052 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11448 transitions. Word has length 94 [2021-07-13 19:02:55,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:55,052 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11448 transitions. [2021-07-13 19:02:55,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:55,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11448 transitions. [2021-07-13 19:02:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:55,057 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:55,057 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:55,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-07-13 19:02:55,057 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:55,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:55,058 INFO L82 PathProgramCache]: Analyzing trace with hash 145546035, now seen corresponding path program 103 times [2021-07-13 19:02:55,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:55,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130143383] [2021-07-13 19:02:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:55,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:55,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130143383] [2021-07-13 19:02:55,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130143383] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:55,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:55,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:55,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036861691] [2021-07-13 19:02:55,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:55,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:55,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:55,532 INFO L87 Difference]: Start difference. First operand 4288 states and 11448 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:56,588 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:02:56,759 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:02:56,944 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:02:57,134 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:02:57,353 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:02:57,547 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:02:58,165 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:02:58,292 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:02:58,432 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:02:58,576 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:02:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:58,585 INFO L93 Difference]: Finished difference Result 8860 states and 22461 transitions. [2021-07-13 19:02:58,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:02:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:02:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:58,597 INFO L225 Difference]: With dead ends: 8860 [2021-07-13 19:02:58,597 INFO L226 Difference]: Without dead ends: 8860 [2021-07-13 19:02:58,597 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2707.7ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:02:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2021-07-13 19:02:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 4296. [2021-07-13 19:02:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.670703306939916) internal successors, (11468), 4295 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11468 transitions. [2021-07-13 19:02:58,678 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11468 transitions. Word has length 94 [2021-07-13 19:02:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:58,678 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11468 transitions. [2021-07-13 19:02:58,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11468 transitions. [2021-07-13 19:02:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:02:58,682 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:58,683 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:58,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-07-13 19:02:58,683 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:58,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1914081789, now seen corresponding path program 104 times [2021-07-13 19:02:58,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:58,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764646686] [2021-07-13 19:02:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:59,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:59,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764646686] [2021-07-13 19:02:59,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764646686] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:59,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:59,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:02:59,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028205909] [2021-07-13 19:02:59,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:02:59,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:59,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:02:59,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:02:59,192 INFO L87 Difference]: Start difference. First operand 4296 states and 11468 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:00,456 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:00,621 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:00,800 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:00,975 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:01,165 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:01,739 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:03:01,890 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:03:02,010 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:03:02,151 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:03:02,299 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:03:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:02,309 INFO L93 Difference]: Finished difference Result 9134 states and 22988 transitions. [2021-07-13 19:03:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:03:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:02,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:02,320 INFO L225 Difference]: With dead ends: 9134 [2021-07-13 19:03:02,320 INFO L226 Difference]: Without dead ends: 9134 [2021-07-13 19:03:02,321 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2791.1ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:03:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2021-07-13 19:03:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 4294. [2021-07-13 19:03:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4292 states have (on average 2.6707828518173344) internal successors, (11463), 4293 states have internal predecessors, (11463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 11463 transitions. [2021-07-13 19:03:02,405 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 11463 transitions. Word has length 94 [2021-07-13 19:03:02,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:02,405 INFO L482 AbstractCegarLoop]: Abstraction has 4294 states and 11463 transitions. [2021-07-13 19:03:02,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 11463 transitions. [2021-07-13 19:03:02,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:02,410 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:02,410 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:02,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-07-13 19:03:02,410 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:02,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:02,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1378829619, now seen corresponding path program 105 times [2021-07-13 19:03:02,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:02,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672797179] [2021-07-13 19:03:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:02,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:02,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672797179] [2021-07-13 19:03:02,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672797179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:02,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:02,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:02,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747713996] [2021-07-13 19:03:02,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:02,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:02,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:02,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:02,931 INFO L87 Difference]: Start difference. First operand 4294 states and 11463 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:04,141 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:04,313 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:03:04,495 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:04,680 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:04,900 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:05,085 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:05,347 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:06,356 INFO L93 Difference]: Finished difference Result 9200 states and 23132 transitions. [2021-07-13 19:03:06,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:03:06,356 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:06,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:06,366 INFO L225 Difference]: With dead ends: 9200 [2021-07-13 19:03:06,367 INFO L226 Difference]: Without dead ends: 9200 [2021-07-13 19:03:06,367 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2943.4ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:03:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2021-07-13 19:03:06,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 4290. [2021-07-13 19:03:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4288 states have (on average 2.6709421641791047) internal successors, (11453), 4289 states have internal predecessors, (11453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 11453 transitions. [2021-07-13 19:03:06,441 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 11453 transitions. Word has length 94 [2021-07-13 19:03:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:06,442 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 11453 transitions. [2021-07-13 19:03:06,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 11453 transitions. [2021-07-13 19:03:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:06,446 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:06,446 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:06,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-07-13 19:03:06,446 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:06,446 INFO L82 PathProgramCache]: Analyzing trace with hash 189215283, now seen corresponding path program 106 times [2021-07-13 19:03:06,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:06,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375325153] [2021-07-13 19:03:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:06,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:06,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375325153] [2021-07-13 19:03:06,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375325153] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:06,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:06,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:06,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624632536] [2021-07-13 19:03:06,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:06,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:06,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:06,968 INFO L87 Difference]: Start difference. First operand 4290 states and 11453 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:08,087 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:03:08,244 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:03:08,400 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:03:08,548 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:08,721 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:08,912 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:09,081 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:09,212 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:09,399 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:10,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:10,226 INFO L93 Difference]: Finished difference Result 8902 states and 22552 transitions. [2021-07-13 19:03:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:03:10,226 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:10,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:10,237 INFO L225 Difference]: With dead ends: 8902 [2021-07-13 19:03:10,237 INFO L226 Difference]: Without dead ends: 8902 [2021-07-13 19:03:10,237 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2869.7ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:03:10,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8902 states. [2021-07-13 19:03:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8902 to 4288. [2021-07-13 19:03:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 2.6710219318712087) internal successors, (11448), 4287 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11448 transitions. [2021-07-13 19:03:10,312 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11448 transitions. Word has length 94 [2021-07-13 19:03:10,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:10,312 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11448 transitions. [2021-07-13 19:03:10,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11448 transitions. [2021-07-13 19:03:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:10,317 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:10,317 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:10,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-07-13 19:03:10,317 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:10,317 INFO L82 PathProgramCache]: Analyzing trace with hash 598553489, now seen corresponding path program 107 times [2021-07-13 19:03:10,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:10,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761347522] [2021-07-13 19:03:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:10,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:10,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:10,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761347522] [2021-07-13 19:03:10,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761347522] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:10,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:10,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:10,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71785662] [2021-07-13 19:03:10,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:10,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:10,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:10,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:10,720 INFO L87 Difference]: Start difference. First operand 4288 states and 11448 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:12,006 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:03:12,158 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:03:12,359 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:03:12,669 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:12,884 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:13,131 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:03:13,319 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:13,519 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:03:13,924 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:03:14,066 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:03:14,264 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:03:14,432 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:03:14,652 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:03:14,814 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:03:15,049 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:03:15,212 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:15,416 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:03:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:15,427 INFO L93 Difference]: Finished difference Result 9335 states and 23764 transitions. [2021-07-13 19:03:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:03:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:15,437 INFO L225 Difference]: With dead ends: 9335 [2021-07-13 19:03:15,437 INFO L226 Difference]: Without dead ends: 9335 [2021-07-13 19:03:15,438 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4190.2ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:03:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9335 states. [2021-07-13 19:03:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9335 to 4336. [2021-07-13 19:03:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4334 states have (on average 2.6746654360867557) internal successors, (11592), 4335 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 11592 transitions. [2021-07-13 19:03:15,517 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 11592 transitions. Word has length 94 [2021-07-13 19:03:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:15,517 INFO L482 AbstractCegarLoop]: Abstraction has 4336 states and 11592 transitions. [2021-07-13 19:03:15,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 11592 transitions. [2021-07-13 19:03:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:15,522 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:15,522 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:15,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-07-13 19:03:15,522 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:15,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1636373387, now seen corresponding path program 108 times [2021-07-13 19:03:15,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:15,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904767389] [2021-07-13 19:03:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:16,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:16,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904767389] [2021-07-13 19:03:16,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904767389] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:16,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:16,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:16,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190548313] [2021-07-13 19:03:16,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:16,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:16,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:16,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:16,084 INFO L87 Difference]: Start difference. First operand 4336 states and 11592 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:16,979 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:17,151 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:17,297 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:03:17,483 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:03:17,681 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:03:17,900 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:03:18,306 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:18,491 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:18,689 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:18,906 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:19,096 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:19,350 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:19,698 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:03:19,863 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:03:20,000 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:03:20,188 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:03:20,341 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:03:20,515 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:03:20,671 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:20,804 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:03:20,970 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:03:21,110 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:21,272 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:21,281 INFO L93 Difference]: Finished difference Result 9604 states and 24224 transitions. [2021-07-13 19:03:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:03:21,282 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:21,293 INFO L225 Difference]: With dead ends: 9604 [2021-07-13 19:03:21,293 INFO L226 Difference]: Without dead ends: 9604 [2021-07-13 19:03:21,294 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4632.7ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:03:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9604 states. [2021-07-13 19:03:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9604 to 4324. [2021-07-13 19:03:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4322 states have (on average 2.6737621471540955) internal successors, (11556), 4323 states have internal predecessors, (11556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 11556 transitions. [2021-07-13 19:03:21,404 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 11556 transitions. Word has length 94 [2021-07-13 19:03:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:21,405 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 11556 transitions. [2021-07-13 19:03:21,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 11556 transitions. [2021-07-13 19:03:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:21,409 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:21,409 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:21,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-07-13 19:03:21,410 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:21,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:21,410 INFO L82 PathProgramCache]: Analyzing trace with hash -328655915, now seen corresponding path program 109 times [2021-07-13 19:03:21,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:21,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911694662] [2021-07-13 19:03:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:21,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:21,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911694662] [2021-07-13 19:03:21,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911694662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:21,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:21,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:21,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761601784] [2021-07-13 19:03:21,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:21,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:21,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:21,889 INFO L87 Difference]: Start difference. First operand 4324 states and 11556 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:22,748 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:22,919 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:23,065 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:03:23,255 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:03:23,730 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:03:23,881 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:24,062 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:24,260 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:24,475 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:24,664 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:24,895 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:25,275 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:03:25,442 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:03:25,599 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:03:25,789 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:03:25,954 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:03:26,136 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:03:26,297 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:03:26,452 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:03:26,604 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:03:26,746 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:26,891 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:26,900 INFO L93 Difference]: Finished difference Result 9648 states and 24322 transitions. [2021-07-13 19:03:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:03:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:26,911 INFO L225 Difference]: With dead ends: 9648 [2021-07-13 19:03:26,911 INFO L226 Difference]: Without dead ends: 9648 [2021-07-13 19:03:26,911 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4391.5ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 19:03:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9648 states. [2021-07-13 19:03:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9648 to 4300. [2021-07-13 19:03:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4298 states have (on average 2.6719404374127502) internal successors, (11484), 4299 states have internal predecessors, (11484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 11484 transitions. [2021-07-13 19:03:26,989 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 11484 transitions. Word has length 94 [2021-07-13 19:03:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:26,989 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 11484 transitions. [2021-07-13 19:03:26,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 11484 transitions. [2021-07-13 19:03:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:26,993 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:26,994 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:26,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-07-13 19:03:26,994 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:26,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1864346231, now seen corresponding path program 110 times [2021-07-13 19:03:26,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:26,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780023454] [2021-07-13 19:03:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:27,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:27,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780023454] [2021-07-13 19:03:27,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780023454] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:27,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:27,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:27,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573455755] [2021-07-13 19:03:27,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:27,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:27,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:27,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:27,531 INFO L87 Difference]: Start difference. First operand 4300 states and 11484 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:28,434 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:28,607 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:03:28,993 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:03:29,154 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:03:29,310 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:29,495 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:29,688 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:29,905 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:30,107 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:30,335 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:30,695 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:03:30,854 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:03:31,021 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:03:31,166 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:03:31,324 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:03:31,489 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:03:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:31,496 INFO L93 Difference]: Finished difference Result 8252 states and 20990 transitions. [2021-07-13 19:03:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:03:31,497 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:31,506 INFO L225 Difference]: With dead ends: 8252 [2021-07-13 19:03:31,507 INFO L226 Difference]: Without dead ends: 8252 [2021-07-13 19:03:31,507 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3519.7ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:03:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8252 states. [2021-07-13 19:03:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8252 to 4276. [2021-07-13 19:03:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4274 states have (on average 2.6700982686008423) internal successors, (11412), 4275 states have internal predecessors, (11412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 11412 transitions. [2021-07-13 19:03:31,584 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 11412 transitions. Word has length 94 [2021-07-13 19:03:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:31,584 INFO L482 AbstractCegarLoop]: Abstraction has 4276 states and 11412 transitions. [2021-07-13 19:03:31,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 11412 transitions. [2021-07-13 19:03:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:31,589 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:31,589 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:31,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-07-13 19:03:31,589 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:31,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1377584479, now seen corresponding path program 111 times [2021-07-13 19:03:31,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:31,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960935450] [2021-07-13 19:03:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:32,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:32,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960935450] [2021-07-13 19:03:32,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960935450] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:32,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:32,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:32,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378998975] [2021-07-13 19:03:32,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:32,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:32,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:32,108 INFO L87 Difference]: Start difference. First operand 4276 states and 11412 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:33,227 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:03:33,390 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-07-13 19:03:33,602 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:03:33,827 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:03:34,058 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:03:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:34,960 INFO L93 Difference]: Finished difference Result 6860 states and 17526 transitions. [2021-07-13 19:03:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:03:34,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:34,968 INFO L225 Difference]: With dead ends: 6860 [2021-07-13 19:03:34,968 INFO L226 Difference]: Without dead ends: 6860 [2021-07-13 19:03:34,969 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2549.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:03:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2021-07-13 19:03:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 4296. [2021-07-13 19:03:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.669306008383791) internal successors, (11462), 4295 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11462 transitions. [2021-07-13 19:03:35,034 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11462 transitions. Word has length 94 [2021-07-13 19:03:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:35,034 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11462 transitions. [2021-07-13 19:03:35,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11462 transitions. [2021-07-13 19:03:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:35,039 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:35,039 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:35,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-07-13 19:03:35,039 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1317915895, now seen corresponding path program 112 times [2021-07-13 19:03:35,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:35,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697334121] [2021-07-13 19:03:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:35,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:35,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697334121] [2021-07-13 19:03:35,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697334121] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:35,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:35,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:35,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510245078] [2021-07-13 19:03:35,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:35,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:35,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:35,543 INFO L87 Difference]: Start difference. First operand 4296 states and 11462 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:36,639 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:03:36,857 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:37,043 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:03:37,269 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:03:37,499 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:03:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:38,414 INFO L93 Difference]: Finished difference Result 7338 states and 18462 transitions. [2021-07-13 19:03:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:03:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:38,423 INFO L225 Difference]: With dead ends: 7338 [2021-07-13 19:03:38,423 INFO L226 Difference]: Without dead ends: 7338 [2021-07-13 19:03:38,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2526.5ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:03:38,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2021-07-13 19:03:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 4298. [2021-07-13 19:03:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4296 states have (on average 2.6692271880819365) internal successors, (11467), 4297 states have internal predecessors, (11467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 11467 transitions. [2021-07-13 19:03:38,497 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 11467 transitions. Word has length 94 [2021-07-13 19:03:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:38,497 INFO L482 AbstractCegarLoop]: Abstraction has 4298 states and 11467 transitions. [2021-07-13 19:03:38,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 11467 transitions. [2021-07-13 19:03:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:38,502 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:38,502 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:38,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-07-13 19:03:38,503 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:38,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1296037655, now seen corresponding path program 113 times [2021-07-13 19:03:38,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:38,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672886700] [2021-07-13 19:03:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:39,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:39,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:39,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672886700] [2021-07-13 19:03:39,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672886700] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:39,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:39,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:39,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714335024] [2021-07-13 19:03:39,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:39,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:39,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:39,058 INFO L87 Difference]: Start difference. First operand 4298 states and 11467 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:40,132 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:03:40,313 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:40,504 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:03:40,712 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:03:40,895 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:03:41,114 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:41,424 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-07-13 19:03:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:42,064 INFO L93 Difference]: Finished difference Result 7136 states and 18058 transitions. [2021-07-13 19:03:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:03:42,064 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:42,073 INFO L225 Difference]: With dead ends: 7136 [2021-07-13 19:03:42,073 INFO L226 Difference]: Without dead ends: 7136 [2021-07-13 19:03:42,073 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2771.2ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:03:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7136 states. [2021-07-13 19:03:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7136 to 4292. [2021-07-13 19:03:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4290 states have (on average 2.6694638694638693) internal successors, (11452), 4291 states have internal predecessors, (11452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 11452 transitions. [2021-07-13 19:03:42,138 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 11452 transitions. Word has length 94 [2021-07-13 19:03:42,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:42,138 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 11452 transitions. [2021-07-13 19:03:42,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 11452 transitions. [2021-07-13 19:03:42,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:42,142 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:42,143 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:42,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-07-13 19:03:42,143 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:42,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:42,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1565483999, now seen corresponding path program 114 times [2021-07-13 19:03:42,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:42,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74024882] [2021-07-13 19:03:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:42,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:42,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74024882] [2021-07-13 19:03:42,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74024882] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:42,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:42,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:42,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133792519] [2021-07-13 19:03:42,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:42,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:42,661 INFO L87 Difference]: Start difference. First operand 4292 states and 11452 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:43,609 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-07-13 19:03:43,772 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:43,959 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:44,146 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:03:44,365 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:03:44,589 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:03:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:45,495 INFO L93 Difference]: Finished difference Result 7410 states and 18621 transitions. [2021-07-13 19:03:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:03:45,496 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:45,506 INFO L225 Difference]: With dead ends: 7410 [2021-07-13 19:03:45,506 INFO L226 Difference]: Without dead ends: 7410 [2021-07-13 19:03:45,506 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2529.5ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:03:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2021-07-13 19:03:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 4298. [2021-07-13 19:03:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4296 states have (on average 2.6692271880819365) internal successors, (11467), 4297 states have internal predecessors, (11467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 11467 transitions. [2021-07-13 19:03:45,582 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 11467 transitions. Word has length 94 [2021-07-13 19:03:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:45,582 INFO L482 AbstractCegarLoop]: Abstraction has 4298 states and 11467 transitions. [2021-07-13 19:03:45,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 11467 transitions. [2021-07-13 19:03:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:45,587 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:45,587 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:45,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-07-13 19:03:45,587 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1048469551, now seen corresponding path program 115 times [2021-07-13 19:03:45,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:45,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260417562] [2021-07-13 19:03:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:46,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:46,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260417562] [2021-07-13 19:03:46,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260417562] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:46,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:46,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:46,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239878230] [2021-07-13 19:03:46,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:46,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:46,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:46,151 INFO L87 Difference]: Start difference. First operand 4298 states and 11467 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:47,297 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:47,499 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:47,705 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:47,923 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:48,133 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:48,367 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:49,350 INFO L93 Difference]: Finished difference Result 7684 states and 19148 transitions. [2021-07-13 19:03:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:03:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:49,361 INFO L225 Difference]: With dead ends: 7684 [2021-07-13 19:03:49,361 INFO L226 Difference]: Without dead ends: 7684 [2021-07-13 19:03:49,361 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2718.6ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:03:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7684 states. [2021-07-13 19:03:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7684 to 4296. [2021-07-13 19:03:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.669306008383791) internal successors, (11462), 4295 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11462 transitions. [2021-07-13 19:03:49,435 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11462 transitions. Word has length 94 [2021-07-13 19:03:49,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:49,435 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11462 transitions. [2021-07-13 19:03:49,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11462 transitions. [2021-07-13 19:03:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:49,440 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:49,440 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:49,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-07-13 19:03:49,440 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:49,440 INFO L82 PathProgramCache]: Analyzing trace with hash 41823771, now seen corresponding path program 116 times [2021-07-13 19:03:49,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:49,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671144531] [2021-07-13 19:03:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:49,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:49,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671144531] [2021-07-13 19:03:49,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671144531] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:49,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:49,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:49,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142773907] [2021-07-13 19:03:49,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:49,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:49,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:49,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:49,941 INFO L87 Difference]: Start difference. First operand 4296 states and 11462 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:51,161 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:03:51,327 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:03:51,492 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:03:51,682 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:51,841 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:52,041 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:52,923 INFO L93 Difference]: Finished difference Result 7206 states and 18212 transitions. [2021-07-13 19:03:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:03:52,924 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:52,933 INFO L225 Difference]: With dead ends: 7206 [2021-07-13 19:03:52,933 INFO L226 Difference]: Without dead ends: 7206 [2021-07-13 19:03:52,933 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2689.6ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:03:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2021-07-13 19:03:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 4284. [2021-07-13 19:03:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4282 states have (on average 2.669780476412891) internal successors, (11432), 4283 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 11432 transitions. [2021-07-13 19:03:52,997 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 11432 transitions. Word has length 94 [2021-07-13 19:03:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:52,997 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 11432 transitions. [2021-07-13 19:03:52,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 11432 transitions. [2021-07-13 19:03:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:53,001 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:53,001 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:53,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-07-13 19:03:53,001 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:53,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1581654815, now seen corresponding path program 117 times [2021-07-13 19:03:53,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:53,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483111140] [2021-07-13 19:03:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:53,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:53,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483111140] [2021-07-13 19:03:53,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483111140] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:53,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:53,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:53,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067314943] [2021-07-13 19:03:53,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:53,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:53,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:53,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:53,488 INFO L87 Difference]: Start difference. First operand 4284 states and 11432 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:54,605 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:03:54,799 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:03:54,986 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:03:55,210 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:03:55,434 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:03:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:56,269 INFO L93 Difference]: Finished difference Result 7482 states and 18780 transitions. [2021-07-13 19:03:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:03:56,270 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:56,279 INFO L225 Difference]: With dead ends: 7482 [2021-07-13 19:03:56,279 INFO L226 Difference]: Without dead ends: 7482 [2021-07-13 19:03:56,280 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2451.7ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:03:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-07-13 19:03:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 4292. [2021-07-13 19:03:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4290 states have (on average 2.6694638694638693) internal successors, (11452), 4291 states have internal predecessors, (11452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 11452 transitions. [2021-07-13 19:03:56,353 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 11452 transitions. Word has length 94 [2021-07-13 19:03:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:56,354 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 11452 transitions. [2021-07-13 19:03:56,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 11452 transitions. [2021-07-13 19:03:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:56,359 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:56,359 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:56,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-07-13 19:03:56,359 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:56,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:56,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1032298735, now seen corresponding path program 118 times [2021-07-13 19:03:56,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:56,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139670970] [2021-07-13 19:03:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:56,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:56,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139670970] [2021-07-13 19:03:56,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139670970] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:56,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:56,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:56,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196320825] [2021-07-13 19:03:56,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:56,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:56,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:56,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:56,814 INFO L87 Difference]: Start difference. First operand 4292 states and 11452 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:58,000 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:03:58,126 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:03:58,303 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:03:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:58,985 INFO L93 Difference]: Finished difference Result 7756 states and 19307 transitions. [2021-07-13 19:03:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:03:58,985 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:03:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:58,994 INFO L225 Difference]: With dead ends: 7756 [2021-07-13 19:03:58,994 INFO L226 Difference]: Without dead ends: 7756 [2021-07-13 19:03:58,994 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1950.9ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:03:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7756 states. [2021-07-13 19:03:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7756 to 4290. [2021-07-13 19:03:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4288 states have (on average 2.669542910447761) internal successors, (11447), 4289 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 11447 transitions. [2021-07-13 19:03:59,066 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 11447 transitions. Word has length 94 [2021-07-13 19:03:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:59,067 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 11447 transitions. [2021-07-13 19:03:59,067 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 11447 transitions. [2021-07-13 19:03:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:03:59,071 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:59,071 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:59,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-07-13 19:03:59,071 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:59,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:59,072 INFO L82 PathProgramCache]: Analyzing trace with hash 57994587, now seen corresponding path program 119 times [2021-07-13 19:03:59,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:59,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865805448] [2021-07-13 19:03:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:59,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:59,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865805448] [2021-07-13 19:03:59,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865805448] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:59,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:59,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:03:59,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539301123] [2021-07-13 19:03:59,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:03:59,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:59,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:03:59,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:03:59,452 INFO L87 Difference]: Start difference. First operand 4290 states and 11447 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:00,512 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:00,707 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:00,929 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:01,114 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:01,349 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:02,020 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-07-13 19:04:02,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:02,336 INFO L93 Difference]: Finished difference Result 7822 states and 19451 transitions. [2021-07-13 19:04:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:04:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:02,345 INFO L225 Difference]: With dead ends: 7822 [2021-07-13 19:04:02,345 INFO L226 Difference]: Without dead ends: 7822 [2021-07-13 19:04:02,345 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2480.1ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:04:02,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-07-13 19:04:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 4286. [2021-07-13 19:04:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4284 states have (on average 2.6697012138188607) internal successors, (11437), 4285 states have internal predecessors, (11437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 11437 transitions. [2021-07-13 19:04:02,413 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 11437 transitions. Word has length 94 [2021-07-13 19:04:02,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:02,414 INFO L482 AbstractCegarLoop]: Abstraction has 4286 states and 11437 transitions. [2021-07-13 19:04:02,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 11437 transitions. [2021-07-13 19:04:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:02,418 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:02,418 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:02,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-07-13 19:04:02,418 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:02,418 INFO L82 PathProgramCache]: Analyzing trace with hash -790145031, now seen corresponding path program 120 times [2021-07-13 19:04:02,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:02,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656285972] [2021-07-13 19:04:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:03,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:03,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656285972] [2021-07-13 19:04:03,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656285972] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:03,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:03,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:03,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949218900] [2021-07-13 19:04:03,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:03,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:03,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:03,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:03,008 INFO L87 Difference]: Start difference. First operand 4286 states and 11437 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:04,005 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:04:04,172 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:04:04,374 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:04:04,529 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:04:04,717 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:04,921 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:05,144 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:05,330 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:05,563 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:06,493 INFO L93 Difference]: Finished difference Result 7274 states and 18361 transitions. [2021-07-13 19:04:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:04:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:06,502 INFO L225 Difference]: With dead ends: 7274 [2021-07-13 19:04:06,503 INFO L226 Difference]: Without dead ends: 7274 [2021-07-13 19:04:06,503 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3070.1ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:04:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2021-07-13 19:04:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 4280. [2021-07-13 19:04:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4278 states have (on average 2.669939223936419) internal successors, (11422), 4279 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 11422 transitions. [2021-07-13 19:04:06,601 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 11422 transitions. Word has length 94 [2021-07-13 19:04:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:06,601 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 11422 transitions. [2021-07-13 19:04:06,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 11422 transitions. [2021-07-13 19:04:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:06,605 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:06,605 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:06,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-07-13 19:04:06,606 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1266765431, now seen corresponding path program 121 times [2021-07-13 19:04:06,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:06,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285781496] [2021-07-13 19:04:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:07,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:07,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285781496] [2021-07-13 19:04:07,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285781496] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:07,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:07,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:07,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116979095] [2021-07-13 19:04:07,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:07,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:07,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:07,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:07,044 INFO L87 Difference]: Start difference. First operand 4280 states and 11422 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:08,099 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:04:08,272 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:08,430 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:04:08,645 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:04:08,834 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:04:09,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:09,717 INFO L93 Difference]: Finished difference Result 6952 states and 17623 transitions. [2021-07-13 19:04:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:04:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:09,726 INFO L225 Difference]: With dead ends: 6952 [2021-07-13 19:04:09,727 INFO L226 Difference]: Without dead ends: 6952 [2021-07-13 19:04:09,727 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2372.8ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:04:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2021-07-13 19:04:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 4290. [2021-07-13 19:04:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4288 states have (on average 2.669542910447761) internal successors, (11447), 4289 states have internal predecessors, (11447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 11447 transitions. [2021-07-13 19:04:09,797 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 11447 transitions. Word has length 94 [2021-07-13 19:04:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:09,797 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 11447 transitions. [2021-07-13 19:04:09,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 11447 transitions. [2021-07-13 19:04:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:09,802 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:09,802 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:09,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-07-13 19:04:09,803 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:09,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1347188119, now seen corresponding path program 122 times [2021-07-13 19:04:09,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:09,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791931934] [2021-07-13 19:04:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:10,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:10,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791931934] [2021-07-13 19:04:10,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791931934] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:10,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:10,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:10,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516723853] [2021-07-13 19:04:10,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:10,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:10,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:10,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:10,281 INFO L87 Difference]: Start difference. First operand 4290 states and 11447 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:11,368 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:04:11,559 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:11,753 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:11,969 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:12,152 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:12,379 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:13,347 INFO L93 Difference]: Finished difference Result 7226 states and 18150 transitions. [2021-07-13 19:04:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:04:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:13,355 INFO L225 Difference]: With dead ends: 7226 [2021-07-13 19:04:13,356 INFO L226 Difference]: Without dead ends: 7226 [2021-07-13 19:04:13,356 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2664.8ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:04:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2021-07-13 19:04:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 4288. [2021-07-13 19:04:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4286 states have (on average 2.6696220251983203) internal successors, (11442), 4287 states have internal predecessors, (11442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 11442 transitions. [2021-07-13 19:04:13,422 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 11442 transitions. Word has length 94 [2021-07-13 19:04:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:13,423 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 11442 transitions. [2021-07-13 19:04:13,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 11442 transitions. [2021-07-13 19:04:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:13,427 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:13,427 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:13,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-07-13 19:04:13,428 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash -256894797, now seen corresponding path program 123 times [2021-07-13 19:04:13,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:13,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248518643] [2021-07-13 19:04:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:13,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:13,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248518643] [2021-07-13 19:04:13,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248518643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:13,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:13,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:13,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348721617] [2021-07-13 19:04:13,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:13,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:13,940 INFO L87 Difference]: Start difference. First operand 4288 states and 11442 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:14,993 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:04:15,164 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:04:15,327 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:15,489 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:15,675 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:15,869 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:16,099 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:16,867 INFO L93 Difference]: Finished difference Result 7292 states and 18294 transitions. [2021-07-13 19:04:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:04:16,868 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:16,877 INFO L225 Difference]: With dead ends: 7292 [2021-07-13 19:04:16,877 INFO L226 Difference]: Without dead ends: 7292 [2021-07-13 19:04:16,878 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2645.6ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:04:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2021-07-13 19:04:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 4284. [2021-07-13 19:04:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4282 states have (on average 2.669780476412891) internal successors, (11432), 4283 states have internal predecessors, (11432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 11432 transitions. [2021-07-13 19:04:16,946 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 11432 transitions. Word has length 94 [2021-07-13 19:04:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:16,946 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 11432 transitions. [2021-07-13 19:04:16,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 11432 transitions. [2021-07-13 19:04:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:16,951 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:16,951 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:16,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-07-13 19:04:16,951 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1105034415, now seen corresponding path program 124 times [2021-07-13 19:04:16,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:16,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782477244] [2021-07-13 19:04:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:17,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:17,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782477244] [2021-07-13 19:04:17,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782477244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:17,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:17,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:17,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178416275] [2021-07-13 19:04:17,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:17,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:17,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:17,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:17,506 INFO L87 Difference]: Start difference. First operand 4284 states and 11432 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:18,452 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:04:18,624 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:04:18,797 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:04:18,950 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:04:19,140 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:19,359 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:19,593 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:19,778 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:20,011 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:20,964 INFO L93 Difference]: Finished difference Result 7358 states and 18438 transitions. [2021-07-13 19:04:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:04:20,964 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:20,972 INFO L225 Difference]: With dead ends: 7358 [2021-07-13 19:04:20,973 INFO L226 Difference]: Without dead ends: 7358 [2021-07-13 19:04:20,973 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3055.9ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:04:20,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2021-07-13 19:04:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4282. [2021-07-13 19:04:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4280 states have (on average 2.6698598130841122) internal successors, (11427), 4281 states have internal predecessors, (11427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 11427 transitions. [2021-07-13 19:04:21,043 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 11427 transitions. Word has length 94 [2021-07-13 19:04:21,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:21,043 INFO L482 AbstractCegarLoop]: Abstraction has 4282 states and 11427 transitions. [2021-07-13 19:04:21,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 11427 transitions. [2021-07-13 19:04:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:21,048 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:21,048 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:21,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-07-13 19:04:21,048 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:21,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:21,049 INFO L82 PathProgramCache]: Analyzing trace with hash 759909677, now seen corresponding path program 125 times [2021-07-13 19:04:21,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:21,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398342847] [2021-07-13 19:04:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:21,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:21,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398342847] [2021-07-13 19:04:21,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398342847] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:21,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:21,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:21,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464656896] [2021-07-13 19:04:21,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:21,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:21,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:21,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:21,636 INFO L87 Difference]: Start difference. First operand 4282 states and 11427 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:22,585 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:04:22,735 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:04:22,872 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:04:23,039 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:04:23,191 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:04:23,386 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:23,588 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:23,828 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:24,012 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:24,241 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:25,155 INFO L93 Difference]: Finished difference Result 6742 states and 17199 transitions. [2021-07-13 19:04:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:04:25,156 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:25,164 INFO L225 Difference]: With dead ends: 6742 [2021-07-13 19:04:25,164 INFO L226 Difference]: Without dead ends: 6742 [2021-07-13 19:04:25,164 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3277.6ms TimeCoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:04:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2021-07-13 19:04:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 4280. [2021-07-13 19:04:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4278 states have (on average 2.669939223936419) internal successors, (11422), 4279 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 11422 transitions. [2021-07-13 19:04:25,232 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 11422 transitions. Word has length 94 [2021-07-13 19:04:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:25,233 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 11422 transitions. [2021-07-13 19:04:25,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:25,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 11422 transitions. [2021-07-13 19:04:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:25,237 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:25,237 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:25,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-07-13 19:04:25,238 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1988859401, now seen corresponding path program 126 times [2021-07-13 19:04:25,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:25,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806373643] [2021-07-13 19:04:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:25,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:25,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806373643] [2021-07-13 19:04:25,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806373643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:25,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:25,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:25,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91544393] [2021-07-13 19:04:25,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:25,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:25,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:25,712 INFO L87 Difference]: Start difference. First operand 4280 states and 11422 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:26,626 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:26,827 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:04:27,015 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:04:27,414 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:04:27,616 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:04:27,825 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:04:28,159 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:28,343 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:04:28,556 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:28,754 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:04:28,924 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:04:29,107 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:04:29,298 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:04:29,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:29,305 INFO L93 Difference]: Finished difference Result 8502 states and 21685 transitions. [2021-07-13 19:04:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:04:29,305 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:29,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:29,315 INFO L225 Difference]: With dead ends: 8502 [2021-07-13 19:04:29,315 INFO L226 Difference]: Without dead ends: 8502 [2021-07-13 19:04:29,315 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3136.0ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:04:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2021-07-13 19:04:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 4376. [2021-07-13 19:04:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4374 states have (on average 2.6771833561957017) internal successors, (11710), 4375 states have internal predecessors, (11710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 11710 transitions. [2021-07-13 19:04:29,398 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 11710 transitions. Word has length 94 [2021-07-13 19:04:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:29,398 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 11710 transitions. [2021-07-13 19:04:29,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 11710 transitions. [2021-07-13 19:04:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:29,403 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:29,403 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:29,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-07-13 19:04:29,403 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:29,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2016002517, now seen corresponding path program 127 times [2021-07-13 19:04:29,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:29,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96262538] [2021-07-13 19:04:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:29,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:29,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96262538] [2021-07-13 19:04:29,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96262538] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:29,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:29,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:29,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361561097] [2021-07-13 19:04:29,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:29,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:29,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:29,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:29,896 INFO L87 Difference]: Start difference. First operand 4376 states and 11710 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:30,498 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-07-13 19:04:30,776 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:30,978 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:04:31,165 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:04:31,386 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:04:31,613 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:04:32,008 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:04:32,215 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:04:32,547 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:04:32,754 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:04:32,998 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:04:33,207 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:04:33,422 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:04:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:33,429 INFO L93 Difference]: Finished difference Result 9176 states and 23481 transitions. [2021-07-13 19:04:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:04:33,429 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:33,440 INFO L225 Difference]: With dead ends: 9176 [2021-07-13 19:04:33,440 INFO L226 Difference]: Without dead ends: 9176 [2021-07-13 19:04:33,441 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3170.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:04:33,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2021-07-13 19:04:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 4340. [2021-07-13 19:04:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4338 states have (on average 2.6745043798985706) internal successors, (11602), 4339 states have internal predecessors, (11602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 11602 transitions. [2021-07-13 19:04:33,518 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 11602 transitions. Word has length 94 [2021-07-13 19:04:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:33,518 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 11602 transitions. [2021-07-13 19:04:33,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 11602 transitions. [2021-07-13 19:04:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:33,523 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:33,523 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:33,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-07-13 19:04:33,523 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:33,523 INFO L82 PathProgramCache]: Analyzing trace with hash 118786365, now seen corresponding path program 128 times [2021-07-13 19:04:33,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:33,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417279781] [2021-07-13 19:04:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:33,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:33,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417279781] [2021-07-13 19:04:33,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417279781] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:33,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:33,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:33,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054721385] [2021-07-13 19:04:33,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:33,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:33,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:33,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:33,994 INFO L87 Difference]: Start difference. First operand 4340 states and 11602 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:34,807 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:35,004 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:04:35,349 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:35,523 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:04:35,734 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:04:35,921 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:04:36,198 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:04:36,343 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:04:36,485 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:04:36,636 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:04:36,764 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:36,910 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:37,091 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:04:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:37,100 INFO L93 Difference]: Finished difference Result 8950 states and 22684 transitions. [2021-07-13 19:04:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:04:37,101 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:37,110 INFO L225 Difference]: With dead ends: 8950 [2021-07-13 19:04:37,110 INFO L226 Difference]: Without dead ends: 8950 [2021-07-13 19:04:37,111 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2799.4ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:04:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8950 states. [2021-07-13 19:04:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8950 to 4342. [2021-07-13 19:04:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 4340 states have (on average 2.6744239631336404) internal successors, (11607), 4341 states have internal predecessors, (11607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 11607 transitions. [2021-07-13 19:04:37,179 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 11607 transitions. Word has length 94 [2021-07-13 19:04:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:37,179 INFO L482 AbstractCegarLoop]: Abstraction has 4342 states and 11607 transitions. [2021-07-13 19:04:37,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 11607 transitions. [2021-07-13 19:04:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:37,184 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:37,184 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:37,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-07-13 19:04:37,193 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1887322119, now seen corresponding path program 129 times [2021-07-13 19:04:37,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:37,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846199296] [2021-07-13 19:04:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:37,719 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:37,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846199296] [2021-07-13 19:04:37,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846199296] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:37,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:37,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:37,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984874629] [2021-07-13 19:04:37,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:37,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:37,720 INFO L87 Difference]: Start difference. First operand 4342 states and 11607 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:38,574 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:38,772 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:04:39,172 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:39,355 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:39,555 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:39,738 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:39,957 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:40,303 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:04:40,469 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:04:40,637 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:04:40,814 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:04:40,968 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:41,134 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:04:41,303 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:04:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:41,310 INFO L93 Difference]: Finished difference Result 8932 states and 22646 transitions. [2021-07-13 19:04:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:04:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:41,320 INFO L225 Difference]: With dead ends: 8932 [2021-07-13 19:04:41,320 INFO L226 Difference]: Without dead ends: 8932 [2021-07-13 19:04:41,320 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3213.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:04:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2021-07-13 19:04:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 4340. [2021-07-13 19:04:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4338 states have (on average 2.6745043798985706) internal successors, (11602), 4339 states have internal predecessors, (11602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 11602 transitions. [2021-07-13 19:04:41,419 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 11602 transitions. Word has length 94 [2021-07-13 19:04:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:41,419 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 11602 transitions. [2021-07-13 19:04:41,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 11602 transitions. [2021-07-13 19:04:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:41,423 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:41,424 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:41,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-07-13 19:04:41,424 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:41,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1732458169, now seen corresponding path program 130 times [2021-07-13 19:04:41,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:41,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756680424] [2021-07-13 19:04:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:41,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:41,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756680424] [2021-07-13 19:04:41,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756680424] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:41,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:41,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:41,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369881768] [2021-07-13 19:04:41,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:41,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:41,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:41,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:41,930 INFO L87 Difference]: Start difference. First operand 4340 states and 11602 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:42,818 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:43,028 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:04:43,231 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:04:43,452 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:04:43,645 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:04:43,879 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:04:44,334 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:04:44,516 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:44,732 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:04:45,123 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:04:45,329 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:04:45,519 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:04:45,728 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:04:45,944 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:04:46,161 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:04:46,355 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:04:46,561 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:04:46,755 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:46,956 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:04:46,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:46,966 INFO L93 Difference]: Finished difference Result 10393 states and 26326 transitions. [2021-07-13 19:04:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:04:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:46,979 INFO L225 Difference]: With dead ends: 10393 [2021-07-13 19:04:46,979 INFO L226 Difference]: Without dead ends: 10393 [2021-07-13 19:04:46,979 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4460.4ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:04:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10393 states. [2021-07-13 19:04:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10393 to 4352. [2021-07-13 19:04:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4350 states have (on average 2.6754022988505746) internal successors, (11638), 4351 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 11638 transitions. [2021-07-13 19:04:47,063 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 11638 transitions. Word has length 94 [2021-07-13 19:04:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:47,063 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 11638 transitions. [2021-07-13 19:04:47,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 11638 transitions. [2021-07-13 19:04:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:47,068 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:47,068 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:47,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-07-13 19:04:47,068 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:47,069 INFO L82 PathProgramCache]: Analyzing trace with hash -694638271, now seen corresponding path program 131 times [2021-07-13 19:04:47,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:47,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256040636] [2021-07-13 19:04:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:47,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:47,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256040636] [2021-07-13 19:04:47,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256040636] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:47,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:47,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:47,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411051553] [2021-07-13 19:04:47,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:47,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:47,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:47,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:47,575 INFO L87 Difference]: Start difference. First operand 4352 states and 11638 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:48,458 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:48,672 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:04:48,869 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:04:49,079 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:04:49,472 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:49,674 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:49,859 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:50,083 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:50,478 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:04:50,669 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:04:50,868 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:04:51,048 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:51,236 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:04:51,429 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:51,436 INFO L93 Difference]: Finished difference Result 9562 states and 24245 transitions. [2021-07-13 19:04:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:04:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:51,447 INFO L225 Difference]: With dead ends: 9562 [2021-07-13 19:04:51,447 INFO L226 Difference]: Without dead ends: 9562 [2021-07-13 19:04:51,447 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3426.9ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:04:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9562 states. [2021-07-13 19:04:51,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9562 to 4328. [2021-07-13 19:04:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4326 states have (on average 2.673601479426722) internal successors, (11566), 4327 states have internal predecessors, (11566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 11566 transitions. [2021-07-13 19:04:51,527 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 11566 transitions. Word has length 94 [2021-07-13 19:04:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:51,528 INFO L482 AbstractCegarLoop]: Abstraction has 4328 states and 11566 transitions. [2021-07-13 19:04:51,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:51,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 11566 transitions. [2021-07-13 19:04:51,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:51,532 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:51,532 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:51,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-07-13 19:04:51,532 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash -667579853, now seen corresponding path program 132 times [2021-07-13 19:04:51,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:51,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239112373] [2021-07-13 19:04:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:52,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:52,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239112373] [2021-07-13 19:04:52,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239112373] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:52,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:52,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:52,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491766295] [2021-07-13 19:04:52,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:52,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:52,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:52,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:52,003 INFO L87 Difference]: Start difference. First operand 4328 states and 11566 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:52,886 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:53,240 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:04:53,403 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:53,579 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:04:53,792 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:04:54,012 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:04:54,326 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:04:54,483 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:04:54,636 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:04:54,831 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:04:54,965 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:04:55,120 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:04:55,281 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:04:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:55,291 INFO L93 Difference]: Finished difference Result 9066 states and 22970 transitions. [2021-07-13 19:04:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:04:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:55,302 INFO L225 Difference]: With dead ends: 9066 [2021-07-13 19:04:55,302 INFO L226 Difference]: Without dead ends: 9066 [2021-07-13 19:04:55,302 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2924.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:04:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2021-07-13 19:04:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 4334. [2021-07-13 19:04:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4332 states have (on average 2.6733610341643583) internal successors, (11581), 4333 states have internal predecessors, (11581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 11581 transitions. [2021-07-13 19:04:55,376 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 11581 transitions. Word has length 94 [2021-07-13 19:04:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:55,376 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 11581 transitions. [2021-07-13 19:04:55,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 11581 transitions. [2021-07-13 19:04:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:55,381 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:55,381 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:55,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-07-13 19:04:55,381 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:55,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1100955901, now seen corresponding path program 133 times [2021-07-13 19:04:55,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:55,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406566482] [2021-07-13 19:04:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:55,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:55,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406566482] [2021-07-13 19:04:55,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406566482] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:55,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:55,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:55,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959331354] [2021-07-13 19:04:55,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:55,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:55,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:55,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:55,821 INFO L87 Difference]: Start difference. First operand 4334 states and 11581 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:56,692 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:04:57,028 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:04:57,188 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:04:57,369 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:04:57,569 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:04:57,750 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:04:57,969 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:04:58,874 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:04:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:58,999 INFO L93 Difference]: Finished difference Result 9340 states and 23497 transitions. [2021-07-13 19:04:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:04:58,999 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:04:58,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:59,008 INFO L225 Difference]: With dead ends: 9340 [2021-07-13 19:04:59,009 INFO L226 Difference]: Without dead ends: 9340 [2021-07-13 19:04:59,009 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2769.0ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:04:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2021-07-13 19:04:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 4332. [2021-07-13 19:04:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4330 states have (on average 2.6734411085450347) internal successors, (11576), 4331 states have internal predecessors, (11576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 11576 transitions. [2021-07-13 19:04:59,082 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 11576 transitions. Word has length 94 [2021-07-13 19:04:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:59,082 INFO L482 AbstractCegarLoop]: Abstraction has 4332 states and 11576 transitions. [2021-07-13 19:04:59,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 11576 transitions. [2021-07-13 19:04:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:04:59,086 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:59,086 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:59,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-07-13 19:04:59,086 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:59,087 INFO L82 PathProgramCache]: Analyzing trace with hash 565703731, now seen corresponding path program 134 times [2021-07-13 19:04:59,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:59,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239604909] [2021-07-13 19:04:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:59,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:59,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239604909] [2021-07-13 19:04:59,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239604909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:59,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:59,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:04:59,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046017213] [2021-07-13 19:04:59,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:04:59,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:59,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:04:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:04:59,471 INFO L87 Difference]: Start difference. First operand 4332 states and 11576 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:00,464 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:00,668 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:00,845 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:01,025 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:01,237 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:01,422 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:01,650 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:01,991 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:05:02,148 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:05:02,305 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:05:02,471 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:05:02,615 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:02,770 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:02,961 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:05:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:02,968 INFO L93 Difference]: Finished difference Result 9090 states and 23023 transitions. [2021-07-13 19:05:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:05:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:02,978 INFO L225 Difference]: With dead ends: 9090 [2021-07-13 19:05:02,979 INFO L226 Difference]: Without dead ends: 9090 [2021-07-13 19:05:02,979 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3072.8ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:05:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2021-07-13 19:05:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 4328. [2021-07-13 19:05:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4328 states, 4326 states have (on average 2.673601479426722) internal successors, (11566), 4327 states have internal predecessors, (11566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4328 states to 4328 states and 11566 transitions. [2021-07-13 19:05:03,056 INFO L78 Accepts]: Start accepts. Automaton has 4328 states and 11566 transitions. Word has length 94 [2021-07-13 19:05:03,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:03,056 INFO L482 AbstractCegarLoop]: Abstraction has 4328 states and 11566 transitions. [2021-07-13 19:05:03,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4328 states and 11566 transitions. [2021-07-13 19:05:03,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:03,061 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:03,061 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:03,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-07-13 19:05:03,061 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:03,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:03,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1932595951, now seen corresponding path program 135 times [2021-07-13 19:05:03,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:03,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437392838] [2021-07-13 19:05:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:03,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:03,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437392838] [2021-07-13 19:05:03,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437392838] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:03,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:03,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:03,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045666908] [2021-07-13 19:05:03,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:03,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:03,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:03,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:03,608 INFO L87 Difference]: Start difference. First operand 4328 states and 11566 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:04,477 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:05:04,659 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:04,850 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:05:05,049 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:05:05,243 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:05:05,397 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:05:05,640 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:05:06,040 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:06,271 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:05:06,456 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:06,686 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:05:07,077 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:05:07,297 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:05:07,474 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:05:07,684 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:05:07,866 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:05:08,086 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:05:08,267 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:05:08,475 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:05:08,655 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:08,857 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:05:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:08,868 INFO L93 Difference]: Finished difference Result 10744 states and 27238 transitions. [2021-07-13 19:05:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:05:08,868 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:08,881 INFO L225 Difference]: With dead ends: 10744 [2021-07-13 19:05:08,881 INFO L226 Difference]: Without dead ends: 10744 [2021-07-13 19:05:08,881 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4694.2ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:05:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2021-07-13 19:05:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 4364. [2021-07-13 19:05:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 4362 states have (on average 2.67629527739569) internal successors, (11674), 4363 states have internal predecessors, (11674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 11674 transitions. [2021-07-13 19:05:08,970 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 11674 transitions. Word has length 94 [2021-07-13 19:05:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:08,970 INFO L482 AbstractCegarLoop]: Abstraction has 4364 states and 11674 transitions. [2021-07-13 19:05:08,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:08,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 11674 transitions. [2021-07-13 19:05:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:08,975 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:08,975 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:08,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-07-13 19:05:08,975 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:08,975 INFO L82 PathProgramCache]: Analyzing trace with hash -894776053, now seen corresponding path program 136 times [2021-07-13 19:05:08,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:08,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282561511] [2021-07-13 19:05:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:09,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:09,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282561511] [2021-07-13 19:05:09,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282561511] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:09,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:09,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:09,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313928033] [2021-07-13 19:05:09,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:09,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:09,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:09,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:09,528 INFO L87 Difference]: Start difference. First operand 4364 states and 11674 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:10,428 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:05:10,608 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:10,804 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:05:10,998 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:05:11,218 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:05:11,637 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:11,835 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:12,043 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:12,230 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:12,464 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:12,888 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:05:13,072 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:05:13,249 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:05:13,444 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:05:13,629 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:05:13,830 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:05:14,048 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:14,219 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:05:14,409 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:05:14,592 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:14,780 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:14,790 INFO L93 Difference]: Finished difference Result 11013 states and 27698 transitions. [2021-07-13 19:05:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:05:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:14,803 INFO L225 Difference]: With dead ends: 11013 [2021-07-13 19:05:14,803 INFO L226 Difference]: Without dead ends: 11013 [2021-07-13 19:05:14,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4677.7ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:05:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11013 states. [2021-07-13 19:05:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11013 to 4352. [2021-07-13 19:05:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4350 states have (on average 2.6754022988505746) internal successors, (11638), 4351 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 11638 transitions. [2021-07-13 19:05:14,889 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 11638 transitions. Word has length 94 [2021-07-13 19:05:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:14,890 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 11638 transitions. [2021-07-13 19:05:14,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 11638 transitions. [2021-07-13 19:05:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:14,894 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:14,894 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:14,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-07-13 19:05:14,894 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:14,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1435161941, now seen corresponding path program 137 times [2021-07-13 19:05:14,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:14,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781761817] [2021-07-13 19:05:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:15,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:15,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:15,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781761817] [2021-07-13 19:05:15,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781761817] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:15,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:15,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:15,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788282964] [2021-07-13 19:05:15,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:15,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:15,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:15,413 INFO L87 Difference]: Start difference. First operand 4352 states and 11638 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:16,046 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2021-07-13 19:05:16,332 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:05:16,513 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:16,708 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:05:17,144 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:17,327 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:17,516 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:17,731 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:17,924 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:18,159 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:18,572 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:05:18,748 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:05:18,932 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:05:19,093 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:19,267 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:05:19,445 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:19,452 INFO L93 Difference]: Finished difference Result 9840 states and 24951 transitions. [2021-07-13 19:05:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:05:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:19,463 INFO L225 Difference]: With dead ends: 9840 [2021-07-13 19:05:19,464 INFO L226 Difference]: Without dead ends: 9840 [2021-07-13 19:05:19,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3547.0ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:05:19,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9840 states. [2021-07-13 19:05:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9840 to 4304. [2021-07-13 19:05:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4302 states have (on average 2.6717805671780566) internal successors, (11494), 4303 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 11494 transitions. [2021-07-13 19:05:19,548 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 11494 transitions. Word has length 94 [2021-07-13 19:05:19,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:19,548 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 11494 transitions. [2021-07-13 19:05:19,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 11494 transitions. [2021-07-13 19:05:19,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:19,553 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:19,553 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:19,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-07-13 19:05:19,553 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1403990063, now seen corresponding path program 138 times [2021-07-13 19:05:19,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:19,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463243522] [2021-07-13 19:05:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:20,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:20,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463243522] [2021-07-13 19:05:20,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463243522] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:20,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:20,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:20,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397308274] [2021-07-13 19:05:20,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:20,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:20,028 INFO L87 Difference]: Start difference. First operand 4304 states and 11494 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:21,067 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:05:21,207 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:21,382 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:21,684 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:05:21,903 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:05:22,197 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-07-13 19:05:22,334 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:05:22,469 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:05:22,613 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:05:22,897 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:05:23,039 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:05:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:23,049 INFO L93 Difference]: Finished difference Result 9226 states and 23383 transitions. [2021-07-13 19:05:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:05:23,049 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:23,061 INFO L225 Difference]: With dead ends: 9226 [2021-07-13 19:05:23,061 INFO L226 Difference]: Without dead ends: 9226 [2021-07-13 19:05:23,061 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2699.2ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:05:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9226 states. [2021-07-13 19:05:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9226 to 4312. [2021-07-13 19:05:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4310 states have (on average 2.671461716937355) internal successors, (11514), 4311 states have internal predecessors, (11514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 11514 transitions. [2021-07-13 19:05:23,150 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 11514 transitions. Word has length 94 [2021-07-13 19:05:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:23,150 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 11514 transitions. [2021-07-13 19:05:23,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 11514 transitions. [2021-07-13 19:05:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:23,155 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:23,155 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:23,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-07-13 19:05:23,155 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash 364545691, now seen corresponding path program 139 times [2021-07-13 19:05:23,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:23,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912671343] [2021-07-13 19:05:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:23,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:23,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912671343] [2021-07-13 19:05:23,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912671343] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:23,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:23,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:23,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925389163] [2021-07-13 19:05:23,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:23,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:23,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:23,646 INFO L87 Difference]: Start difference. First operand 4312 states and 11514 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:24,724 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:05:24,862 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:25,079 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:25,281 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:25,499 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:25,692 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:25,913 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:26,276 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-07-13 19:05:26,424 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:05:26,563 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:05:26,712 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:05:26,831 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:05:26,971 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:05:27,119 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:05:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:27,128 INFO L93 Difference]: Finished difference Result 9500 states and 23910 transitions. [2021-07-13 19:05:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:05:27,129 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:27,140 INFO L225 Difference]: With dead ends: 9500 [2021-07-13 19:05:27,140 INFO L226 Difference]: Without dead ends: 9500 [2021-07-13 19:05:27,141 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3020.0ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:05:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9500 states. [2021-07-13 19:05:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9500 to 4310. [2021-07-13 19:05:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4308 states have (on average 2.6715413184772516) internal successors, (11509), 4309 states have internal predecessors, (11509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 11509 transitions. [2021-07-13 19:05:27,256 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 11509 transitions. Word has length 94 [2021-07-13 19:05:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:27,257 INFO L482 AbstractCegarLoop]: Abstraction has 4310 states and 11509 transitions. [2021-07-13 19:05:27,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 11509 transitions. [2021-07-13 19:05:27,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:27,261 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:27,261 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:27,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-07-13 19:05:27,261 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:27,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:27,262 INFO L82 PathProgramCache]: Analyzing trace with hash -170706479, now seen corresponding path program 140 times [2021-07-13 19:05:27,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:27,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116952982] [2021-07-13 19:05:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:27,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:27,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116952982] [2021-07-13 19:05:27,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116952982] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:27,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:27,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:27,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346883262] [2021-07-13 19:05:27,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:27,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:27,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:27,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:27,722 INFO L87 Difference]: Start difference. First operand 4310 states and 11509 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:28,758 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:05:28,900 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:29,075 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:29,262 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:29,479 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:29,697 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:29,865 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:30,034 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:30,870 INFO L93 Difference]: Finished difference Result 9566 states and 24054 transitions. [2021-07-13 19:05:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:05:30,870 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:30,883 INFO L225 Difference]: With dead ends: 9566 [2021-07-13 19:05:30,883 INFO L226 Difference]: Without dead ends: 9566 [2021-07-13 19:05:30,883 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2780.3ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:05:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9566 states. [2021-07-13 19:05:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9566 to 4306. [2021-07-13 19:05:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4304 states have (on average 2.6717007434944238) internal successors, (11499), 4305 states have internal predecessors, (11499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 11499 transitions. [2021-07-13 19:05:30,976 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 11499 transitions. Word has length 94 [2021-07-13 19:05:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:30,976 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 11499 transitions. [2021-07-13 19:05:30,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 11499 transitions. [2021-07-13 19:05:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:30,981 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:30,981 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:30,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-07-13 19:05:30,981 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:30,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1360320815, now seen corresponding path program 141 times [2021-07-13 19:05:30,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:30,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211150063] [2021-07-13 19:05:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:31,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:31,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211150063] [2021-07-13 19:05:31,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211150063] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:31,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:31,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:31,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794219954] [2021-07-13 19:05:31,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:31,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:31,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:31,447 INFO L87 Difference]: Start difference. First operand 4306 states and 11499 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:32,787 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:32,938 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:33,064 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:33,218 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:33,866 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:05:34,125 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:05:34,268 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:05:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:34,275 INFO L93 Difference]: Finished difference Result 9268 states and 23474 transitions. [2021-07-13 19:05:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:05:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:34,287 INFO L225 Difference]: With dead ends: 9268 [2021-07-13 19:05:34,288 INFO L226 Difference]: Without dead ends: 9268 [2021-07-13 19:05:34,288 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2511.9ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:05:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2021-07-13 19:05:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 4304. [2021-07-13 19:05:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4302 states have (on average 2.6717805671780566) internal successors, (11494), 4303 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 11494 transitions. [2021-07-13 19:05:34,373 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 11494 transitions. Word has length 94 [2021-07-13 19:05:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:34,373 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 11494 transitions. [2021-07-13 19:05:34,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 11494 transitions. [2021-07-13 19:05:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:34,378 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:34,378 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:34,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-07-13 19:05:34,378 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash -950982609, now seen corresponding path program 142 times [2021-07-13 19:05:34,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:34,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210572833] [2021-07-13 19:05:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:34,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:34,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210572833] [2021-07-13 19:05:34,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210572833] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:34,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:34,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:34,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449740023] [2021-07-13 19:05:34,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:34,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:34,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:34,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:34,901 INFO L87 Difference]: Start difference. First operand 4304 states and 11494 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:35,726 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:35,898 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:36,044 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:05:36,232 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:05:36,439 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:05:36,662 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:05:36,850 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:05:37,083 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:05:37,433 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:37,628 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:37,898 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:05:38,092 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:38,324 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:05:38,663 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:05:38,837 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:05:38,974 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:05:39,178 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:05:39,329 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:05:39,519 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:05:39,670 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:05:39,893 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:05:40,056 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:40,259 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:05:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:40,269 INFO L93 Difference]: Finished difference Result 11095 states and 28150 transitions. [2021-07-13 19:05:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:05:40,270 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:40,282 INFO L225 Difference]: With dead ends: 11095 [2021-07-13 19:05:40,282 INFO L226 Difference]: Without dead ends: 11095 [2021-07-13 19:05:40,282 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4774.8ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:05:40,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11095 states. [2021-07-13 19:05:40,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11095 to 4352. [2021-07-13 19:05:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4350 states have (on average 2.6754022988505746) internal successors, (11638), 4351 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 11638 transitions. [2021-07-13 19:05:40,369 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 11638 transitions. Word has length 94 [2021-07-13 19:05:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:40,369 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 11638 transitions. [2021-07-13 19:05:40,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 11638 transitions. [2021-07-13 19:05:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:40,374 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:40,374 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:40,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-07-13 19:05:40,374 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:40,374 INFO L82 PathProgramCache]: Analyzing trace with hash 86837289, now seen corresponding path program 143 times [2021-07-13 19:05:40,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:40,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936515194] [2021-07-13 19:05:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:40,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:40,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936515194] [2021-07-13 19:05:40,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936515194] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:40,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:40,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:40,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545075738] [2021-07-13 19:05:40,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:40,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:40,807 INFO L87 Difference]: Start difference. First operand 4352 states and 11638 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:42,552 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:42,839 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:42,968 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:43,133 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:43,594 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:05:43,758 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:05:43,963 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:05:44,138 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:05:44,340 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:05:44,537 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:44,690 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:05:44,880 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:05:45,033 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:45,163 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:45,171 INFO L93 Difference]: Finished difference Result 11364 states and 28610 transitions. [2021-07-13 19:05:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:05:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:45,184 INFO L225 Difference]: With dead ends: 11364 [2021-07-13 19:05:45,184 INFO L226 Difference]: Without dead ends: 11364 [2021-07-13 19:05:45,184 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3807.3ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:05:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11364 states. [2021-07-13 19:05:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11364 to 4340. [2021-07-13 19:05:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4338 states have (on average 2.6745043798985706) internal successors, (11602), 4339 states have internal predecessors, (11602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 11602 transitions. [2021-07-13 19:05:45,273 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 11602 transitions. Word has length 94 [2021-07-13 19:05:45,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:45,273 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 11602 transitions. [2021-07-13 19:05:45,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:45,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 11602 transitions. [2021-07-13 19:05:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:45,278 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:45,278 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:45,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-07-13 19:05:45,278 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1878192013, now seen corresponding path program 144 times [2021-07-13 19:05:45,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:45,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655681638] [2021-07-13 19:05:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:45,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:45,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655681638] [2021-07-13 19:05:45,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655681638] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:45,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:45,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:45,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175371842] [2021-07-13 19:05:45,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:45,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:45,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:45,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:45,766 INFO L87 Difference]: Start difference. First operand 4340 states and 11602 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:46,560 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:46,687 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:05:46,886 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:05:47,384 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:47,537 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:47,720 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:47,921 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:48,142 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:48,331 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:48,574 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:48,987 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:05:49,153 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:05:49,310 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:05:49,484 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:05:49,652 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:05:49,836 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:05:49,999 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:50,153 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-07-13 19:05:50,323 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:05:50,486 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:50,655 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:05:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:50,666 INFO L93 Difference]: Finished difference Result 11408 states and 28708 transitions. [2021-07-13 19:05:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-07-13 19:05:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:50,681 INFO L225 Difference]: With dead ends: 11408 [2021-07-13 19:05:50,681 INFO L226 Difference]: Without dead ends: 11408 [2021-07-13 19:05:50,681 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4235.3ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-07-13 19:05:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11408 states. [2021-07-13 19:05:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11408 to 4316. [2021-07-13 19:05:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4314 states have (on average 2.672693555864627) internal successors, (11530), 4315 states have internal predecessors, (11530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 11530 transitions. [2021-07-13 19:05:50,783 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 11530 transitions. Word has length 94 [2021-07-13 19:05:50,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:50,783 INFO L482 AbstractCegarLoop]: Abstraction has 4316 states and 11530 transitions. [2021-07-13 19:05:50,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 11530 transitions. [2021-07-13 19:05:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:50,787 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:50,787 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:50,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-07-13 19:05:50,787 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 314810133, now seen corresponding path program 145 times [2021-07-13 19:05:50,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:50,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172735588] [2021-07-13 19:05:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:51,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:51,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172735588] [2021-07-13 19:05:51,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172735588] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:51,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:51,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:51,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935221727] [2021-07-13 19:05:51,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:51,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:51,269 INFO L87 Difference]: Start difference. First operand 4316 states and 11530 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:52,417 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:05:52,926 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:53,054 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:05:53,213 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:05:54,035 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:05:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:54,040 INFO L93 Difference]: Finished difference Result 10012 states and 25376 transitions. [2021-07-13 19:05:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:05:54,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:54,051 INFO L225 Difference]: With dead ends: 10012 [2021-07-13 19:05:54,052 INFO L226 Difference]: Without dead ends: 10012 [2021-07-13 19:05:54,052 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2516.4ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:05:54,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2021-07-13 19:05:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 4292. [2021-07-13 19:05:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4290 states have (on average 2.670862470862471) internal successors, (11458), 4291 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 11458 transitions. [2021-07-13 19:05:54,130 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 11458 transitions. Word has length 94 [2021-07-13 19:05:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:54,130 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 11458 transitions. [2021-07-13 19:05:54,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 11458 transitions. [2021-07-13 19:05:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:54,134 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:54,134 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:54,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-07-13 19:05:54,135 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:54,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:54,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1188391423, now seen corresponding path program 146 times [2021-07-13 19:05:54,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:54,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315019360] [2021-07-13 19:05:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:54,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:54,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315019360] [2021-07-13 19:05:54,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315019360] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:54,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:54,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:54,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534443070] [2021-07-13 19:05:54,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:54,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:54,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:54,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:54,488 INFO L87 Difference]: Start difference. First operand 4292 states and 11458 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:55,653 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:55,867 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:05:56,089 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:05:56,310 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:05:56,858 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-13 19:05:56,993 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 19:05:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:57,365 INFO L93 Difference]: Finished difference Result 8012 states and 20333 transitions. [2021-07-13 19:05:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:05:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:05:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:57,376 INFO L225 Difference]: With dead ends: 8012 [2021-07-13 19:05:57,376 INFO L226 Difference]: Without dead ends: 8012 [2021-07-13 19:05:57,376 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2412.1ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:05:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2021-07-13 19:05:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 4302. [2021-07-13 19:05:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4300 states have (on average 2.6704651162790696) internal successors, (11483), 4301 states have internal predecessors, (11483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 11483 transitions. [2021-07-13 19:05:57,453 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 11483 transitions. Word has length 94 [2021-07-13 19:05:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:57,453 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 11483 transitions. [2021-07-13 19:05:57,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 11483 transitions. [2021-07-13 19:05:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:05:57,458 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:57,458 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:57,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-07-13 19:05:57,459 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 580144331, now seen corresponding path program 147 times [2021-07-13 19:05:57,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:57,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367985438] [2021-07-13 19:05:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:57,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:57,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367985438] [2021-07-13 19:05:57,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367985438] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:57,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:57,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:05:57,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516614585] [2021-07-13 19:05:57,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:05:57,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:57,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:05:57,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:05:57,988 INFO L87 Difference]: Start difference. First operand 4302 states and 11483 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:59,003 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:05:59,152 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:05:59,337 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:05:59,531 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:05:59,741 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:05:59,930 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:00,155 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:00,892 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 19:06:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:01,271 INFO L93 Difference]: Finished difference Result 8286 states and 20860 transitions. [2021-07-13 19:06:01,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:06:01,271 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:01,281 INFO L225 Difference]: With dead ends: 8286 [2021-07-13 19:06:01,281 INFO L226 Difference]: Without dead ends: 8286 [2021-07-13 19:06:01,282 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2905.0ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:06:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8286 states. [2021-07-13 19:06:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8286 to 4300. [2021-07-13 19:06:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4298 states have (on average 2.670544439274081) internal successors, (11478), 4299 states have internal predecessors, (11478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 11478 transitions. [2021-07-13 19:06:01,360 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 11478 transitions. Word has length 94 [2021-07-13 19:06:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:01,360 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 11478 transitions. [2021-07-13 19:06:01,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 11478 transitions. [2021-07-13 19:06:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:01,365 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:01,365 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:01,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-07-13 19:06:01,365 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:01,366 INFO L82 PathProgramCache]: Analyzing trace with hash 44892161, now seen corresponding path program 148 times [2021-07-13 19:06:01,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:01,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405576023] [2021-07-13 19:06:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:01,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:01,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405576023] [2021-07-13 19:06:01,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405576023] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:01,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:01,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:01,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509015826] [2021-07-13 19:06:01,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:01,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:01,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:01,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:01,874 INFO L87 Difference]: Start difference. First operand 4300 states and 11478 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:02,878 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:06:03,025 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:06:03,200 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:03,388 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:03,587 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:03,810 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:03,996 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:04,226 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:04,819 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-13 19:06:04,951 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 19:06:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:05,326 INFO L93 Difference]: Finished difference Result 8352 states and 21004 transitions. [2021-07-13 19:06:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:06:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:05,335 INFO L225 Difference]: With dead ends: 8352 [2021-07-13 19:06:05,336 INFO L226 Difference]: Without dead ends: 8352 [2021-07-13 19:06:05,336 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3086.5ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:06:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2021-07-13 19:06:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 4296. [2021-07-13 19:06:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 4294 states have (on average 2.670703306939916) internal successors, (11468), 4295 states have internal predecessors, (11468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 11468 transitions. [2021-07-13 19:06:05,408 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 11468 transitions. Word has length 94 [2021-07-13 19:06:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:05,408 INFO L482 AbstractCegarLoop]: Abstraction has 4296 states and 11468 transitions. [2021-07-13 19:06:05,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 11468 transitions. [2021-07-13 19:06:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:05,412 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:05,412 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:05,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-07-13 19:06:05,413 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:05,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:05,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1144722175, now seen corresponding path program 149 times [2021-07-13 19:06:05,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:05,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25030935] [2021-07-13 19:06:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:05,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:05,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25030935] [2021-07-13 19:06:05,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25030935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:05,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:05,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:05,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075361656] [2021-07-13 19:06:05,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:05,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:05,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:05,939 INFO L87 Difference]: Start difference. First operand 4296 states and 11468 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:07,099 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:06:07,264 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:07,415 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:07,595 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:07,794 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:08,017 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:08,202 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:08,429 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:09,008 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-13 19:06:09,140 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 19:06:09,399 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-07-13 19:06:09,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:09,541 INFO L93 Difference]: Finished difference Result 8418 states and 21148 transitions. [2021-07-13 19:06:09,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-07-13 19:06:09,541 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:09,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:09,551 INFO L225 Difference]: With dead ends: 8418 [2021-07-13 19:06:09,551 INFO L226 Difference]: Without dead ends: 8418 [2021-07-13 19:06:09,551 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3231.8ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-07-13 19:06:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8418 states. [2021-07-13 19:06:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8418 to 4294. [2021-07-13 19:06:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 4292 states have (on average 2.6707828518173344) internal successors, (11463), 4293 states have internal predecessors, (11463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 11463 transitions. [2021-07-13 19:06:09,627 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 11463 transitions. Word has length 94 [2021-07-13 19:06:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:09,628 INFO L482 AbstractCegarLoop]: Abstraction has 4294 states and 11463 transitions. [2021-07-13 19:06:09,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 11463 transitions. [2021-07-13 19:06:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:09,632 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:09,632 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:09,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-07-13 19:06:09,633 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:09,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:09,633 INFO L82 PathProgramCache]: Analyzing trace with hash 888304331, now seen corresponding path program 150 times [2021-07-13 19:06:09,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:09,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671053354] [2021-07-13 19:06:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:10,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:10,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671053354] [2021-07-13 19:06:10,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671053354] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:10,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:10,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:10,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402050864] [2021-07-13 19:06:10,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:10,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:10,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:10,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:10,173 INFO L87 Difference]: Start difference. First operand 4294 states and 11463 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:11,258 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:06:11,433 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:06:11,571 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:11,735 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:11,888 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:12,082 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:12,292 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:12,513 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:12,699 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:12,931 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:13,530 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-07-13 19:06:13,690 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-07-13 19:06:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:14,061 INFO L93 Difference]: Finished difference Result 8074 states and 20467 transitions. [2021-07-13 19:06:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:06:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:14,070 INFO L225 Difference]: With dead ends: 8074 [2021-07-13 19:06:14,070 INFO L226 Difference]: Without dead ends: 8074 [2021-07-13 19:06:14,070 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3408.6ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:06:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2021-07-13 19:06:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 4292. [2021-07-13 19:06:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4290 states have (on average 2.670862470862471) internal successors, (11458), 4291 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 11458 transitions. [2021-07-13 19:06:14,139 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 11458 transitions. Word has length 94 [2021-07-13 19:06:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:14,139 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 11458 transitions. [2021-07-13 19:06:14,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 11458 transitions. [2021-07-13 19:06:14,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:14,144 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:14,144 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:14,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-07-13 19:06:14,144 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:14,145 INFO L82 PathProgramCache]: Analyzing trace with hash 258927371, now seen corresponding path program 151 times [2021-07-13 19:06:14,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:14,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071180906] [2021-07-13 19:06:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:14,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:14,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071180906] [2021-07-13 19:06:14,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071180906] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:14,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:14,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:14,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573677003] [2021-07-13 19:06:14,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:14,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:14,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:14,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:14,653 INFO L87 Difference]: Start difference. First operand 4292 states and 11458 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:15,513 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:06:15,644 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:06:15,835 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:06:15,984 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:06:16,180 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:06:16,384 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:06:16,604 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:06:16,784 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:06:17,018 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:06:17,361 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:17,533 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:17,737 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:17,998 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:06:18,213 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:18,447 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:06:18,811 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:06:19,013 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:06:19,155 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:06:19,366 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:06:19,515 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 19:06:19,732 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:06:19,877 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 19:06:20,086 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:06:20,370 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:06:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:20,378 INFO L93 Difference]: Finished difference Result 8535 states and 21759 transitions. [2021-07-13 19:06:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:06:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:20,388 INFO L225 Difference]: With dead ends: 8535 [2021-07-13 19:06:20,388 INFO L226 Difference]: Without dead ends: 8535 [2021-07-13 19:06:20,388 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 5061.4ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 19:06:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8535 states. [2021-07-13 19:06:20,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8535 to 4352. [2021-07-13 19:06:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4350 states have (on average 2.6754022988505746) internal successors, (11638), 4351 states have internal predecessors, (11638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 11638 transitions. [2021-07-13 19:06:20,456 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 11638 transitions. Word has length 94 [2021-07-13 19:06:20,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:20,456 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 11638 transitions. [2021-07-13 19:06:20,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 11638 transitions. [2021-07-13 19:06:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:20,461 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:20,461 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:20,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-07-13 19:06:20,461 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:20,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:20,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1296747269, now seen corresponding path program 152 times [2021-07-13 19:06:20,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:20,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374798051] [2021-07-13 19:06:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:20,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:20,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374798051] [2021-07-13 19:06:20,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374798051] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:20,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:20,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:20,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983374475] [2021-07-13 19:06:20,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:20,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:20,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:20,906 INFO L87 Difference]: Start difference. First operand 4352 states and 11638 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:21,730 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:06:21,861 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:06:22,027 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:06:22,173 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:06:22,401 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:06:22,601 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:06:22,819 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:06:23,182 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:23,356 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:23,556 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:23,762 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:23,986 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:24,181 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:24,421 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:24,847 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:06:25,032 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:06:25,175 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:06:25,367 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:06:25,519 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 19:06:25,720 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:06:25,899 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:26,038 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 19:06:26,228 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:06:26,376 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:26,566 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:26,576 INFO L93 Difference]: Finished difference Result 8804 states and 22219 transitions. [2021-07-13 19:06:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:06:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:26,586 INFO L225 Difference]: With dead ends: 8804 [2021-07-13 19:06:26,587 INFO L226 Difference]: Without dead ends: 8804 [2021-07-13 19:06:26,587 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4896.4ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-07-13 19:06:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2021-07-13 19:06:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 4340. [2021-07-13 19:06:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4338 states have (on average 2.6745043798985706) internal successors, (11602), 4339 states have internal predecessors, (11602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 11602 transitions. [2021-07-13 19:06:26,663 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 11602 transitions. Word has length 94 [2021-07-13 19:06:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:26,663 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 11602 transitions. [2021-07-13 19:06:26,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 11602 transitions. [2021-07-13 19:06:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:26,668 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:26,668 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:26,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-07-13 19:06:26,668 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:26,669 INFO L82 PathProgramCache]: Analyzing trace with hash -668282033, now seen corresponding path program 153 times [2021-07-13 19:06:26,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:26,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46544795] [2021-07-13 19:06:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:27,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:27,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46544795] [2021-07-13 19:06:27,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46544795] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:27,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:27,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:27,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348094995] [2021-07-13 19:06:27,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:27,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:27,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:27,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:27,260 INFO L87 Difference]: Start difference. First operand 4340 states and 11602 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:28,009 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-07-13 19:06:28,160 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:06:28,291 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:06:28,458 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:06:28,604 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:06:28,795 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:06:29,252 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:29,426 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:29,578 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:29,775 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:29,982 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:30,199 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:30,388 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:30,621 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:31,031 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:06:31,199 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:06:31,343 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:06:31,549 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:06:31,706 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 19:06:31,897 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:06:32,067 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:32,211 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-07-13 19:06:32,392 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:06:32,547 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:32,720 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:32,731 INFO L93 Difference]: Finished difference Result 8848 states and 22317 transitions. [2021-07-13 19:06:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-13 19:06:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:32,741 INFO L225 Difference]: With dead ends: 8848 [2021-07-13 19:06:32,741 INFO L226 Difference]: Without dead ends: 8848 [2021-07-13 19:06:32,742 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4793.0ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-07-13 19:06:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8848 states. [2021-07-13 19:06:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8848 to 4316. [2021-07-13 19:06:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4314 states have (on average 2.672693555864627) internal successors, (11530), 4315 states have internal predecessors, (11530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 11530 transitions. [2021-07-13 19:06:32,821 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 11530 transitions. Word has length 94 [2021-07-13 19:06:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:32,821 INFO L482 AbstractCegarLoop]: Abstraction has 4316 states and 11530 transitions. [2021-07-13 19:06:32,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 11530 transitions. [2021-07-13 19:06:32,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:32,826 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:32,826 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:32,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-07-13 19:06:32,826 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:32,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1524720113, now seen corresponding path program 154 times [2021-07-13 19:06:32,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:32,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172591293] [2021-07-13 19:06:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:33,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:33,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172591293] [2021-07-13 19:06:33,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172591293] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:33,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:33,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:33,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18138296] [2021-07-13 19:06:33,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:33,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:33,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:33,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:33,400 INFO L87 Difference]: Start difference. First operand 4316 states and 11530 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:34,394 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:06:34,563 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:06:35,008 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:06:35,144 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:35,312 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:35,466 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:35,668 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:35,877 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:36,095 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:36,283 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:36,512 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:37,009 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:06:37,134 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-07-13 19:06:37,276 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:06:37,420 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-07-13 19:06:37,586 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-07-13 19:06:38,041 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:38,175 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:38,184 INFO L93 Difference]: Finished difference Result 8903 states and 22438 transitions. [2021-07-13 19:06:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-07-13 19:06:38,185 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:38,194 INFO L225 Difference]: With dead ends: 8903 [2021-07-13 19:06:38,194 INFO L226 Difference]: Without dead ends: 8903 [2021-07-13 19:06:38,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4203.6ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-07-13 19:06:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2021-07-13 19:06:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 4304. [2021-07-13 19:06:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4302 states have (on average 2.6717805671780566) internal successors, (11494), 4303 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 11494 transitions. [2021-07-13 19:06:38,270 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 11494 transitions. Word has length 94 [2021-07-13 19:06:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:38,270 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 11494 transitions. [2021-07-13 19:06:38,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:38,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 11494 transitions. [2021-07-13 19:06:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:38,275 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:38,275 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:38,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-07-13 19:06:38,275 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:38,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1516366399, now seen corresponding path program 155 times [2021-07-13 19:06:38,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:38,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446397556] [2021-07-13 19:06:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:38,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:38,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446397556] [2021-07-13 19:06:38,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446397556] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:38,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:38,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:38,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930400616] [2021-07-13 19:06:38,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:38,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:38,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:38,837 INFO L87 Difference]: Start difference. First operand 4304 states and 11494 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:39,707 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:06:40,094 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:06:40,239 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:06:40,379 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:06:40,549 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:06:40,702 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:06:40,890 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:41,077 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:41,231 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:06:41,364 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:41,525 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:06:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:42,314 INFO L93 Difference]: Finished difference Result 7360 states and 18735 transitions. [2021-07-13 19:06:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-13 19:06:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:42,322 INFO L225 Difference]: With dead ends: 7360 [2021-07-13 19:06:42,322 INFO L226 Difference]: Without dead ends: 7360 [2021-07-13 19:06:42,323 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3118.1ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-07-13 19:06:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-07-13 19:06:42,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 4280. [2021-07-13 19:06:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4278 states have (on average 2.669939223936419) internal successors, (11422), 4279 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 11422 transitions. [2021-07-13 19:06:42,387 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 11422 transitions. Word has length 94 [2021-07-13 19:06:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:42,387 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 11422 transitions. [2021-07-13 19:06:42,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 11422 transitions. [2021-07-13 19:06:42,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:42,392 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:42,392 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:42,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-07-13 19:06:42,392 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:42,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1675508629, now seen corresponding path program 156 times [2021-07-13 19:06:42,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:42,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618892509] [2021-07-13 19:06:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:42,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:42,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618892509] [2021-07-13 19:06:42,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618892509] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:42,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:42,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 19:06:42,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364882085] [2021-07-13 19:06:42,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 19:06:42,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:42,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 19:06:42,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-07-13 19:06:42,633 INFO L87 Difference]: Start difference. First operand 4280 states and 11422 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:43,407 INFO L93 Difference]: Finished difference Result 5193 states and 13215 transitions. [2021-07-13 19:06:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-13 19:06:43,408 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:43,415 INFO L225 Difference]: With dead ends: 5193 [2021-07-13 19:06:43,415 INFO L226 Difference]: Without dead ends: 5193 [2021-07-13 19:06:43,415 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 671.7ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:06:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-07-13 19:06:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 4302. [2021-07-13 19:06:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4300 states have (on average 2.6686046511627906) internal successors, (11475), 4301 states have internal predecessors, (11475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 11475 transitions. [2021-07-13 19:06:43,474 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 11475 transitions. Word has length 94 [2021-07-13 19:06:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:43,474 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 11475 transitions. [2021-07-13 19:06:43,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 11475 transitions. [2021-07-13 19:06:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:43,478 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:43,478 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:43,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-07-13 19:06:43,478 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash 764494319, now seen corresponding path program 157 times [2021-07-13 19:06:43,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:43,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227754732] [2021-07-13 19:06:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:43,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:43,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227754732] [2021-07-13 19:06:43,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227754732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:43,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:43,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:43,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937433249] [2021-07-13 19:06:43,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:43,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:43,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:43,921 INFO L87 Difference]: Start difference. First operand 4302 states and 11475 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:44,674 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:06:44,847 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:06:45,225 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:06:45,415 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:06:45,626 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:06:45,857 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:06:46,149 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:06:46,315 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:06:46,481 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:06:46,655 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:06:46,808 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:06:46,971 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:06:47,137 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:06:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:47,143 INFO L93 Difference]: Finished difference Result 8210 states and 21047 transitions. [2021-07-13 19:06:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:06:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:47,153 INFO L225 Difference]: With dead ends: 8210 [2021-07-13 19:06:47,153 INFO L226 Difference]: Without dead ends: 8210 [2021-07-13 19:06:47,154 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2847.1ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:06:47,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2021-07-13 19:06:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 4470. [2021-07-13 19:06:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.681065353625783) internal successors, (11979), 4469 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:47,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11979 transitions. [2021-07-13 19:06:47,230 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11979 transitions. Word has length 94 [2021-07-13 19:06:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:47,230 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11979 transitions. [2021-07-13 19:06:47,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11979 transitions. [2021-07-13 19:06:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:47,235 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:47,235 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:47,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-07-13 19:06:47,235 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:47,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:47,235 INFO L82 PathProgramCache]: Analyzing trace with hash 479175151, now seen corresponding path program 158 times [2021-07-13 19:06:47,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:47,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940798479] [2021-07-13 19:06:47,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:47,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:47,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940798479] [2021-07-13 19:06:47,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940798479] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:47,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:47,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:47,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659347695] [2021-07-13 19:06:47,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:47,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:47,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:47,663 INFO L87 Difference]: Start difference. First operand 4470 states and 11979 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:48,619 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:06:48,834 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:06:49,163 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:06:49,334 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:06:49,510 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:06:49,745 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:06:49,869 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:06:50,014 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:06:50,180 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:06:50,327 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:06:50,484 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:06:50,642 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:06:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:50,649 INFO L93 Difference]: Finished difference Result 8216 states and 21065 transitions. [2021-07-13 19:06:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:06:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:50,659 INFO L225 Difference]: With dead ends: 8216 [2021-07-13 19:06:50,659 INFO L226 Difference]: Without dead ends: 8216 [2021-07-13 19:06:50,659 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2664.8ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:06:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8216 states. [2021-07-13 19:06:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8216 to 4506. [2021-07-13 19:06:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6836145648312613) internal successors, (12087), 4505 states have internal predecessors, (12087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12087 transitions. [2021-07-13 19:06:50,737 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12087 transitions. Word has length 94 [2021-07-13 19:06:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:50,737 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12087 transitions. [2021-07-13 19:06:50,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12087 transitions. [2021-07-13 19:06:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:50,742 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:50,742 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:50,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-07-13 19:06:50,743 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:50,743 INFO L82 PathProgramCache]: Analyzing trace with hash 189069773, now seen corresponding path program 159 times [2021-07-13 19:06:50,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:50,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113774933] [2021-07-13 19:06:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:51,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:51,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113774933] [2021-07-13 19:06:51,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113774933] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:51,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:51,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:51,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516185970] [2021-07-13 19:06:51,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:51,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:51,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:51,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:51,185 INFO L87 Difference]: Start difference. First operand 4506 states and 12087 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:52,052 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:06:52,277 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:06:52,496 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:06:52,720 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:06:53,046 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:06:53,261 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:06:53,582 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:06:53,790 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:06:54,021 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:06:54,233 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:06:54,442 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:06:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:54,449 INFO L93 Difference]: Finished difference Result 7904 states and 20481 transitions. [2021-07-13 19:06:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:06:54,449 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:54,458 INFO L225 Difference]: With dead ends: 7904 [2021-07-13 19:06:54,458 INFO L226 Difference]: Without dead ends: 7904 [2021-07-13 19:06:54,458 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2936.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:06:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2021-07-13 19:06:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 4398. [2021-07-13 19:06:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4396 states have (on average 2.6758416742493174) internal successors, (11763), 4397 states have internal predecessors, (11763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 11763 transitions. [2021-07-13 19:06:54,521 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 11763 transitions. Word has length 94 [2021-07-13 19:06:54,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:54,521 INFO L482 AbstractCegarLoop]: Abstraction has 4398 states and 11763 transitions. [2021-07-13 19:06:54,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 11763 transitions. [2021-07-13 19:06:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:54,526 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:54,526 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:54,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-07-13 19:06:54,526 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1276778039, now seen corresponding path program 160 times [2021-07-13 19:06:54,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:54,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329939595] [2021-07-13 19:06:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:55,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:55,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329939595] [2021-07-13 19:06:55,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329939595] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:55,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:55,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:55,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171890766] [2021-07-13 19:06:55,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:55,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:55,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:55,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:55,002 INFO L87 Difference]: Start difference. First operand 4398 states and 11763 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:56,190 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:06:56,348 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:06:56,546 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:06:56,720 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:06:56,873 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:06:57,217 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:06:57,360 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 19:06:57,509 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-07-13 19:06:57,633 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:06:57,777 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:06:57,921 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:06:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:57,929 INFO L93 Difference]: Finished difference Result 7122 states and 18344 transitions. [2021-07-13 19:06:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:06:57,930 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:06:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:57,939 INFO L225 Difference]: With dead ends: 7122 [2021-07-13 19:06:57,939 INFO L226 Difference]: Without dead ends: 7122 [2021-07-13 19:06:57,939 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2619.1ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:06:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2021-07-13 19:06:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 4404. [2021-07-13 19:06:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 4402 states have (on average 2.675601999091322) internal successors, (11778), 4403 states have internal predecessors, (11778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 11778 transitions. [2021-07-13 19:06:58,013 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 11778 transitions. Word has length 94 [2021-07-13 19:06:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:58,013 INFO L482 AbstractCegarLoop]: Abstraction has 4404 states and 11778 transitions. [2021-07-13 19:06:58,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 11778 transitions. [2021-07-13 19:06:58,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:06:58,018 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:58,018 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:58,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-07-13 19:06:58,018 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:58,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:58,018 INFO L82 PathProgramCache]: Analyzing trace with hash -329113785, now seen corresponding path program 161 times [2021-07-13 19:06:58,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:58,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889165681] [2021-07-13 19:06:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:58,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:58,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889165681] [2021-07-13 19:06:58,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889165681] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:58,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:58,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:06:58,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6726906] [2021-07-13 19:06:58,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:06:58,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:58,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:06:58,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:06:58,533 INFO L87 Difference]: Start difference. First operand 4404 states and 11778 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:59,352 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:06:59,510 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:00,092 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:07:00,265 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:01,142 INFO L93 Difference]: Finished difference Result 9356 states and 23922 transitions. [2021-07-13 19:07:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:01,142 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:01,155 INFO L225 Difference]: With dead ends: 9356 [2021-07-13 19:07:01,155 INFO L226 Difference]: Without dead ends: 9356 [2021-07-13 19:07:01,155 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2355.3ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2021-07-13 19:07:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 4500. [2021-07-13 19:07:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4498 states have (on average 2.6825255669186303) internal successors, (12066), 4499 states have internal predecessors, (12066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 12066 transitions. [2021-07-13 19:07:01,254 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 12066 transitions. Word has length 94 [2021-07-13 19:07:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:01,254 INFO L482 AbstractCegarLoop]: Abstraction has 4500 states and 12066 transitions. [2021-07-13 19:07:01,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 12066 transitions. [2021-07-13 19:07:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:01,260 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:01,260 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:01,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-07-13 19:07:01,260 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash -614432953, now seen corresponding path program 162 times [2021-07-13 19:07:01,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:01,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036347794] [2021-07-13 19:07:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:01,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:01,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036347794] [2021-07-13 19:07:01,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036347794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:01,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:01,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:01,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780970111] [2021-07-13 19:07:01,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:01,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:01,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:01,731 INFO L87 Difference]: Start difference. First operand 4500 states and 12066 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:03,223 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:07:03,386 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:03,691 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:07:03,837 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:07:03,973 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:07:04,109 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:07:04,362 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:07:04,525 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:07:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:04,531 INFO L93 Difference]: Finished difference Result 10408 states and 26495 transitions. [2021-07-13 19:07:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:04,545 INFO L225 Difference]: With dead ends: 10408 [2021-07-13 19:07:04,545 INFO L226 Difference]: Without dead ends: 10408 [2021-07-13 19:07:04,545 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2461.7ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10408 states. [2021-07-13 19:07:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10408 to 4536. [2021-07-13 19:07:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4536 states, 4534 states have (on average 2.6850463167181298) internal successors, (12174), 4535 states have internal predecessors, (12174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 12174 transitions. [2021-07-13 19:07:04,627 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 12174 transitions. Word has length 94 [2021-07-13 19:07:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:04,627 INFO L482 AbstractCegarLoop]: Abstraction has 4536 states and 12174 transitions. [2021-07-13 19:07:04,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 12174 transitions. [2021-07-13 19:07:04,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:04,631 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:04,631 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:04,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-07-13 19:07:04,632 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:04,632 INFO L82 PathProgramCache]: Analyzing trace with hash -904538331, now seen corresponding path program 163 times [2021-07-13 19:07:04,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:04,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843834931] [2021-07-13 19:07:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:05,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:05,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843834931] [2021-07-13 19:07:05,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843834931] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:05,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:05,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:05,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408487313] [2021-07-13 19:07:05,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:05,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:05,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:05,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:05,083 INFO L87 Difference]: Start difference. First operand 4536 states and 12174 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:05,965 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:07:06,127 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:06,357 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:07:06,576 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:07:06,800 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:07:07,163 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:07:07,347 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:07,663 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:07:07,859 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:07:08,047 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:07:08,232 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:07:08,422 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:08,430 INFO L93 Difference]: Finished difference Result 10096 states and 25911 transitions. [2021-07-13 19:07:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:07:08,431 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:08,444 INFO L225 Difference]: With dead ends: 10096 [2021-07-13 19:07:08,444 INFO L226 Difference]: Without dead ends: 10096 [2021-07-13 19:07:08,444 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2911.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:07:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10096 states. [2021-07-13 19:07:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10096 to 4428. [2021-07-13 19:07:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4426 states have (on average 2.6773610483506554) internal successors, (11850), 4427 states have internal predecessors, (11850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 11850 transitions. [2021-07-13 19:07:08,537 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 11850 transitions. Word has length 94 [2021-07-13 19:07:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:08,537 INFO L482 AbstractCegarLoop]: Abstraction has 4428 states and 11850 transitions. [2021-07-13 19:07:08,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 11850 transitions. [2021-07-13 19:07:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:08,542 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:08,542 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:08,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-07-13 19:07:08,542 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1633214571, now seen corresponding path program 164 times [2021-07-13 19:07:08,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:08,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796825438] [2021-07-13 19:07:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:09,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:09,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796825438] [2021-07-13 19:07:09,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796825438] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:09,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:09,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:09,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991374943] [2021-07-13 19:07:09,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:09,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:09,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:09,036 INFO L87 Difference]: Start difference. First operand 4428 states and 11850 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:09,877 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:07:10,211 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:07:10,370 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-07-13 19:07:10,578 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:07:10,802 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:07:11,027 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:07:11,324 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-07-13 19:07:11,479 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-07-13 19:07:11,632 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 19:07:11,794 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-07-13 19:07:11,928 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:07:12,084 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:07:12,277 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:07:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:12,287 INFO L93 Difference]: Finished difference Result 8912 states and 22727 transitions. [2021-07-13 19:07:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:12,299 INFO L225 Difference]: With dead ends: 8912 [2021-07-13 19:07:12,299 INFO L226 Difference]: Without dead ends: 8912 [2021-07-13 19:07:12,299 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2921.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8912 states. [2021-07-13 19:07:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 4432. [2021-07-13 19:07:12,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4430 states have (on average 2.6772009029345374) internal successors, (11860), 4431 states have internal predecessors, (11860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 11860 transitions. [2021-07-13 19:07:12,388 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 11860 transitions. Word has length 94 [2021-07-13 19:07:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:12,388 INFO L482 AbstractCegarLoop]: Abstraction has 4432 states and 11860 transitions. [2021-07-13 19:07:12,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 11860 transitions. [2021-07-13 19:07:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:12,394 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:12,394 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:12,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-07-13 19:07:12,394 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:12,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:12,394 INFO L82 PathProgramCache]: Analyzing trace with hash 700068449, now seen corresponding path program 165 times [2021-07-13 19:07:12,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:12,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222803474] [2021-07-13 19:07:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:12,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:12,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222803474] [2021-07-13 19:07:12,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222803474] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:12,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:12,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:12,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379165103] [2021-07-13 19:07:12,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:12,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:12,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:12,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:12,882 INFO L87 Difference]: Start difference. First operand 4432 states and 11860 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:13,980 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:07:14,132 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:07:14,280 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:07:15,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:15,099 INFO L93 Difference]: Finished difference Result 9074 states and 23042 transitions. [2021-07-13 19:07:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:15,111 INFO L225 Difference]: With dead ends: 9074 [2021-07-13 19:07:15,111 INFO L226 Difference]: Without dead ends: 9074 [2021-07-13 19:07:15,112 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2072.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2021-07-13 19:07:15,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 4434. [2021-07-13 19:07:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6771209386281587) internal successors, (11865), 4433 states have internal predecessors, (11865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11865 transitions. [2021-07-13 19:07:15,205 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11865 transitions. Word has length 94 [2021-07-13 19:07:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:15,205 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11865 transitions. [2021-07-13 19:07:15,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11865 transitions. [2021-07-13 19:07:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:15,210 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:15,210 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:15,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-07-13 19:07:15,210 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1913885101, now seen corresponding path program 166 times [2021-07-13 19:07:15,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:15,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396361257] [2021-07-13 19:07:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:15,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:15,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396361257] [2021-07-13 19:07:15,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396361257] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:15,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:15,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:15,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699691216] [2021-07-13 19:07:15,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:15,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:15,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:15,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:15,615 INFO L87 Difference]: Start difference. First operand 4434 states and 11865 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:16,802 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:07:16,925 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:17,072 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:07:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:17,930 INFO L93 Difference]: Finished difference Result 8872 states and 22638 transitions. [2021-07-13 19:07:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:07:17,930 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:17,942 INFO L225 Difference]: With dead ends: 8872 [2021-07-13 19:07:17,942 INFO L226 Difference]: Without dead ends: 8872 [2021-07-13 19:07:17,943 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2034.7ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:07:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8872 states. [2021-07-13 19:07:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8872 to 4428. [2021-07-13 19:07:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4426 states have (on average 2.6773610483506554) internal successors, (11850), 4427 states have internal predecessors, (11850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 11850 transitions. [2021-07-13 19:07:18,029 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 11850 transitions. Word has length 94 [2021-07-13 19:07:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:18,030 INFO L482 AbstractCegarLoop]: Abstraction has 4428 states and 11850 transitions. [2021-07-13 19:07:18,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 11850 transitions. [2021-07-13 19:07:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:18,034 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:18,035 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:18,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-07-13 19:07:18,035 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:18,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:18,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1698154429, now seen corresponding path program 167 times [2021-07-13 19:07:18,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:18,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866817855] [2021-07-13 19:07:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:18,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:18,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866817855] [2021-07-13 19:07:18,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866817855] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:18,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:18,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:18,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004551035] [2021-07-13 19:07:18,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:18,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:18,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:18,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:18,520 INFO L87 Difference]: Start difference. First operand 4428 states and 11850 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:19,405 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:07:19,596 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:19,776 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:07:20,142 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:07:20,346 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:07:20,503 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:20,865 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:07:21,016 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:07:21,184 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:07:21,427 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:07:21,568 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:07:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:21,574 INFO L93 Difference]: Finished difference Result 9196 states and 23480 transitions. [2021-07-13 19:07:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:21,575 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:21,586 INFO L225 Difference]: With dead ends: 9196 [2021-07-13 19:07:21,586 INFO L226 Difference]: Without dead ends: 9196 [2021-07-13 19:07:21,586 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2755.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2021-07-13 19:07:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 4476. [2021-07-13 19:07:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4474 states have (on average 2.6808225301743405) internal successors, (11994), 4475 states have internal predecessors, (11994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 11994 transitions. [2021-07-13 19:07:21,669 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 11994 transitions. Word has length 94 [2021-07-13 19:07:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:21,669 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 11994 transitions. [2021-07-13 19:07:21,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 11994 transitions. [2021-07-13 19:07:21,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:21,674 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:21,674 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:21,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-07-13 19:07:21,674 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:21,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:21,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1988259807, now seen corresponding path program 168 times [2021-07-13 19:07:21,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:21,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643508669] [2021-07-13 19:07:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:22,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:22,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643508669] [2021-07-13 19:07:22,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643508669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:22,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:22,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:22,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408524278] [2021-07-13 19:07:22,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:22,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:22,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:22,112 INFO L87 Difference]: Start difference. First operand 4476 states and 11994 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:22,813 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2021-07-13 19:07:23,117 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:23,283 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:07:23,477 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:07:23,675 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:07:24,066 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:07:24,294 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:24,648 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:07:24,851 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:07:25,072 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:07:25,268 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:07:25,451 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:25,458 INFO L93 Difference]: Finished difference Result 9870 states and 25276 transitions. [2021-07-13 19:07:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:07:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:25,470 INFO L225 Difference]: With dead ends: 9870 [2021-07-13 19:07:25,470 INFO L226 Difference]: Without dead ends: 9870 [2021-07-13 19:07:25,470 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2933.8ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:07:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9870 states. [2021-07-13 19:07:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9870 to 4440. [2021-07-13 19:07:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4438 states have (on average 2.678233438485804) internal successors, (11886), 4439 states have internal predecessors, (11886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 11886 transitions. [2021-07-13 19:07:25,558 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 11886 transitions. Word has length 94 [2021-07-13 19:07:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:25,558 INFO L482 AbstractCegarLoop]: Abstraction has 4440 states and 11886 transitions. [2021-07-13 19:07:25,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 11886 transitions. [2021-07-13 19:07:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:25,564 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:25,564 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:25,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-07-13 19:07:25,564 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:25,564 INFO L82 PathProgramCache]: Analyzing trace with hash 409491337, now seen corresponding path program 169 times [2021-07-13 19:07:25,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:25,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482016799] [2021-07-13 19:07:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:26,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:26,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482016799] [2021-07-13 19:07:26,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482016799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:26,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:26,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:26,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478282047] [2021-07-13 19:07:26,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:26,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:26,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:26,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:26,012 INFO L87 Difference]: Start difference. First operand 4440 states and 11886 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:26,902 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:27,226 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:07:27,377 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:07:27,562 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:07:27,752 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:07:28,025 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:07:28,205 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:07:28,395 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:07:28,591 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:07:28,756 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:07:28,948 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:07:29,124 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:07:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:29,134 INFO L93 Difference]: Finished difference Result 8820 states and 22488 transitions. [2021-07-13 19:07:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:29,135 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:29,147 INFO L225 Difference]: With dead ends: 8820 [2021-07-13 19:07:29,147 INFO L226 Difference]: Without dead ends: 8820 [2021-07-13 19:07:29,147 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2811.0ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8820 states. [2021-07-13 19:07:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8820 to 4442. [2021-07-13 19:07:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.6781531531531533) internal successors, (11891), 4441 states have internal predecessors, (11891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11891 transitions. [2021-07-13 19:07:29,268 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11891 transitions. Word has length 94 [2021-07-13 19:07:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:29,268 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11891 transitions. [2021-07-13 19:07:29,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11891 transitions. [2021-07-13 19:07:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:29,273 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:29,273 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:29,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-07-13 19:07:29,274 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:29,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:29,274 INFO L82 PathProgramCache]: Analyzing trace with hash -2116940205, now seen corresponding path program 170 times [2021-07-13 19:07:29,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:29,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876237705] [2021-07-13 19:07:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:29,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:29,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876237705] [2021-07-13 19:07:29,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876237705] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:29,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:29,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:29,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471113232] [2021-07-13 19:07:29,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:29,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:29,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:29,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:29,764 INFO L87 Difference]: Start difference. First operand 4442 states and 11891 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:30,650 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:30,992 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:07:31,191 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:07:31,446 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:07:31,655 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:31,890 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:07:32,220 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:07:32,386 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:07:32,553 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:07:32,729 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:07:32,884 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:07:33,054 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:07:33,227 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:07:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:33,234 INFO L93 Difference]: Finished difference Result 8802 states and 22450 transitions. [2021-07-13 19:07:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:07:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:33,245 INFO L225 Difference]: With dead ends: 8802 [2021-07-13 19:07:33,245 INFO L226 Difference]: Without dead ends: 8802 [2021-07-13 19:07:33,246 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3177.2ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:07:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8802 states. [2021-07-13 19:07:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8802 to 4440. [2021-07-13 19:07:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4438 states have (on average 2.678233438485804) internal successors, (11886), 4439 states have internal predecessors, (11886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 11886 transitions. [2021-07-13 19:07:33,327 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 11886 transitions. Word has length 94 [2021-07-13 19:07:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:33,327 INFO L482 AbstractCegarLoop]: Abstraction has 4440 states and 11886 transitions. [2021-07-13 19:07:33,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 11886 transitions. [2021-07-13 19:07:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:33,332 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:33,332 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:33,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-07-13 19:07:33,332 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:33,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1441753197, now seen corresponding path program 171 times [2021-07-13 19:07:33,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:33,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499203360] [2021-07-13 19:07:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:33,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:33,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499203360] [2021-07-13 19:07:33,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499203360] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:33,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:33,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:33,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639238100] [2021-07-13 19:07:33,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:33,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:33,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:33,882 INFO L87 Difference]: Start difference. First operand 4440 states and 11886 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:34,747 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:07:34,958 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:35,156 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 19:07:35,369 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-07-13 19:07:35,524 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:07:35,753 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-07-13 19:07:36,207 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-07-13 19:07:36,393 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:36,608 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:07:37,006 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 19:07:37,211 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-07-13 19:07:37,404 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:07:37,613 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-07-13 19:07:37,812 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:07:38,035 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-07-13 19:07:38,266 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 19:07:38,473 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:07:38,669 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:38,873 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:07:38,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:38,883 INFO L93 Difference]: Finished difference Result 9175 states and 23479 transitions. [2021-07-13 19:07:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:07:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:38,894 INFO L225 Difference]: With dead ends: 9175 [2021-07-13 19:07:38,894 INFO L226 Difference]: Without dead ends: 9175 [2021-07-13 19:07:38,894 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4436.4ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:07:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9175 states. [2021-07-13 19:07:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9175 to 4452. [2021-07-13 19:07:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4450 states have (on average 2.6791011235955056) internal successors, (11922), 4451 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 11922 transitions. [2021-07-13 19:07:38,973 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 11922 transitions. Word has length 94 [2021-07-13 19:07:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:38,973 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 11922 transitions. [2021-07-13 19:07:38,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 11922 transitions. [2021-07-13 19:07:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:38,978 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:38,978 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:38,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-07-13 19:07:38,978 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:38,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:38,978 INFO L82 PathProgramCache]: Analyzing trace with hash -403933299, now seen corresponding path program 172 times [2021-07-13 19:07:38,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:38,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621720575] [2021-07-13 19:07:38,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:39,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:39,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621720575] [2021-07-13 19:07:39,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621720575] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:39,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:39,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:39,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601454546] [2021-07-13 19:07:39,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:39,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:39,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:39,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:39,491 INFO L87 Difference]: Start difference. First operand 4452 states and 11922 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:40,209 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2021-07-13 19:07:40,354 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:07:40,544 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:40,732 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 19:07:40,937 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:07:41,300 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:07:41,498 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:07:41,685 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:41,905 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:07:42,260 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 19:07:42,451 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:07:42,669 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:07:42,844 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:07:43,036 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 19:07:43,232 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:43,239 INFO L93 Difference]: Finished difference Result 8344 states and 21398 transitions. [2021-07-13 19:07:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:07:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:43,250 INFO L225 Difference]: With dead ends: 8344 [2021-07-13 19:07:43,250 INFO L226 Difference]: Without dead ends: 8344 [2021-07-13 19:07:43,250 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3394.9ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:07:43,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8344 states. [2021-07-13 19:07:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8344 to 4404. [2021-07-13 19:07:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4404 states, 4402 states have (on average 2.675601999091322) internal successors, (11778), 4403 states have internal predecessors, (11778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4404 states to 4404 states and 11778 transitions. [2021-07-13 19:07:43,326 INFO L78 Accepts]: Start accepts. Automaton has 4404 states and 11778 transitions. Word has length 94 [2021-07-13 19:07:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:43,326 INFO L482 AbstractCegarLoop]: Abstraction has 4404 states and 11778 transitions. [2021-07-13 19:07:43,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4404 states and 11778 transitions. [2021-07-13 19:07:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:43,331 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:43,331 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:43,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-07-13 19:07:43,331 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1663508767, now seen corresponding path program 173 times [2021-07-13 19:07:43,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:43,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400054296] [2021-07-13 19:07:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:43,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:43,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400054296] [2021-07-13 19:07:43,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400054296] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:43,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:43,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:43,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143301683] [2021-07-13 19:07:43,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:43,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:43,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:43,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:43,826 INFO L87 Difference]: Start difference. First operand 4404 states and 11778 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:44,777 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-07-13 19:07:44,949 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-07-13 19:07:45,160 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:07:45,374 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:07:45,593 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:07:46,112 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:07:46,245 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:07:46,483 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:07:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:46,625 INFO L93 Difference]: Finished difference Result 7592 states and 19350 transitions. [2021-07-13 19:07:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:46,626 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:46,637 INFO L225 Difference]: With dead ends: 7592 [2021-07-13 19:07:46,638 INFO L226 Difference]: Without dead ends: 7592 [2021-07-13 19:07:46,638 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2492.9ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2021-07-13 19:07:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 4406. [2021-07-13 19:07:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4404 states have (on average 2.6755222524977293) internal successors, (11783), 4405 states have internal predecessors, (11783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 11783 transitions. [2021-07-13 19:07:46,753 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 11783 transitions. Word has length 94 [2021-07-13 19:07:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:46,753 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 11783 transitions. [2021-07-13 19:07:46,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 11783 transitions. [2021-07-13 19:07:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:46,758 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:46,758 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:46,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-07-13 19:07:46,758 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:46,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1268018171, now seen corresponding path program 174 times [2021-07-13 19:07:46,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:46,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820389369] [2021-07-13 19:07:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:47,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:47,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820389369] [2021-07-13 19:07:47,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820389369] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:47,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:47,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:47,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583457838] [2021-07-13 19:07:47,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:47,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:47,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:47,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:47,182 INFO L87 Difference]: Start difference. First operand 4406 states and 11783 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:48,578 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:07:48,829 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:07:49,048 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:07:49,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:49,829 INFO L93 Difference]: Finished difference Result 7692 states and 19499 transitions. [2021-07-13 19:07:49,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:49,830 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:49,840 INFO L225 Difference]: With dead ends: 7692 [2021-07-13 19:07:49,840 INFO L226 Difference]: Without dead ends: 7692 [2021-07-13 19:07:49,840 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2307.5ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7692 states. [2021-07-13 19:07:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7692 to 4410. [2021-07-13 19:07:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 4408 states have (on average 2.6753629764065336) internal successors, (11793), 4409 states have internal predecessors, (11793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 11793 transitions. [2021-07-13 19:07:49,924 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 11793 transitions. Word has length 94 [2021-07-13 19:07:49,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:49,924 INFO L482 AbstractCegarLoop]: Abstraction has 4410 states and 11793 transitions. [2021-07-13 19:07:49,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:49,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 11793 transitions. [2021-07-13 19:07:49,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:49,929 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:49,929 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:49,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-07-13 19:07:49,929 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:49,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2125568281, now seen corresponding path program 175 times [2021-07-13 19:07:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:49,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650014571] [2021-07-13 19:07:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:50,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:50,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650014571] [2021-07-13 19:07:50,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650014571] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:50,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:50,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:50,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061989682] [2021-07-13 19:07:50,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:50,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:50,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:50,305 INFO L87 Difference]: Start difference. First operand 4410 states and 11793 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:51,548 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:07:51,701 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:07:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:52,616 INFO L93 Difference]: Finished difference Result 7656 states and 19415 transitions. [2021-07-13 19:07:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:07:52,616 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:52,625 INFO L225 Difference]: With dead ends: 7656 [2021-07-13 19:07:52,625 INFO L226 Difference]: Without dead ends: 7656 [2021-07-13 19:07:52,625 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2036.7ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:07:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2021-07-13 19:07:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 4412. [2021-07-13 19:07:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4410 states have (on average 2.6752834467120183) internal successors, (11798), 4411 states have internal predecessors, (11798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 11798 transitions. [2021-07-13 19:07:52,697 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 11798 transitions. Word has length 94 [2021-07-13 19:07:52,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:52,697 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 11798 transitions. [2021-07-13 19:07:52,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 11798 transitions. [2021-07-13 19:07:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:52,702 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:52,702 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:52,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-07-13 19:07:52,703 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:52,703 INFO L82 PathProgramCache]: Analyzing trace with hash -488385269, now seen corresponding path program 176 times [2021-07-13 19:07:52,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:52,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621395951] [2021-07-13 19:07:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:53,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:53,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621395951] [2021-07-13 19:07:53,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621395951] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:53,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:53,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:53,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020538990] [2021-07-13 19:07:53,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:53,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:53,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:53,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:53,176 INFO L87 Difference]: Start difference. First operand 4412 states and 11798 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:54,432 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:07:54,643 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:07:54,875 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:07:55,079 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:07:55,323 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:07:55,899 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-07-13 19:07:56,034 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-07-13 19:07:56,275 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:07:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:56,418 INFO L93 Difference]: Finished difference Result 7454 states and 19011 transitions. [2021-07-13 19:07:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:07:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:07:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:56,429 INFO L225 Difference]: With dead ends: 7454 [2021-07-13 19:07:56,429 INFO L226 Difference]: Without dead ends: 7454 [2021-07-13 19:07:56,429 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2815.0ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:07:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2021-07-13 19:07:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 4406. [2021-07-13 19:07:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4404 states have (on average 2.6755222524977293) internal successors, (11783), 4405 states have internal predecessors, (11783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 11783 transitions. [2021-07-13 19:07:56,513 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 11783 transitions. Word has length 94 [2021-07-13 19:07:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:56,513 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 11783 transitions. [2021-07-13 19:07:56,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 11783 transitions. [2021-07-13 19:07:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:07:56,519 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:56,519 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:56,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-07-13 19:07:56,519 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash -912294741, now seen corresponding path program 177 times [2021-07-13 19:07:56,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:56,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431543132] [2021-07-13 19:07:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:57,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:57,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431543132] [2021-07-13 19:07:57,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431543132] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:57,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:57,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:07:57,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921157608] [2021-07-13 19:07:57,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:07:57,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:57,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:07:57,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:07:57,049 INFO L87 Difference]: Start difference. First operand 4406 states and 11783 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:57,927 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:07:58,098 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:07:58,501 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:07:58,696 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:07:58,908 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:07:59,152 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:07:59,464 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:07:59,630 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:07:59,797 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:07:59,973 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:08:00,128 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:00,295 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:08:00,464 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:08:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:00,471 INFO L93 Difference]: Finished difference Result 9780 states and 25086 transitions. [2021-07-13 19:08:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:00,484 INFO L225 Difference]: With dead ends: 9780 [2021-07-13 19:08:00,484 INFO L226 Difference]: Without dead ends: 9780 [2021-07-13 19:08:00,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2990.0ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9780 states. [2021-07-13 19:08:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9780 to 4550. [2021-07-13 19:08:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4548 states have (on average 2.685795954265611) internal successors, (12215), 4549 states have internal predecessors, (12215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 12215 transitions. [2021-07-13 19:08:00,582 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 12215 transitions. Word has length 94 [2021-07-13 19:08:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:00,582 INFO L482 AbstractCegarLoop]: Abstraction has 4550 states and 12215 transitions. [2021-07-13 19:08:00,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 12215 transitions. [2021-07-13 19:08:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:00,588 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:00,588 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:00,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-07-13 19:08:00,588 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1197613909, now seen corresponding path program 178 times [2021-07-13 19:08:00,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:00,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118904834] [2021-07-13 19:08:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:01,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:01,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118904834] [2021-07-13 19:08:01,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118904834] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:01,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:01,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:01,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163075747] [2021-07-13 19:08:01,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:01,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:01,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:01,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:01,119 INFO L87 Difference]: Start difference. First operand 4550 states and 12215 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:02,011 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:02,184 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:02,413 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:08:02,794 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:08:03,010 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:08:03,227 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:08:03,565 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:08:03,794 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:08:03,997 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:08:04,207 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:08:04,393 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:08:04,596 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:08:04,800 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:08:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:04,808 INFO L93 Difference]: Finished difference Result 10832 states and 27659 transitions. [2021-07-13 19:08:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:04,809 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:04,822 INFO L225 Difference]: With dead ends: 10832 [2021-07-13 19:08:04,823 INFO L226 Difference]: Without dead ends: 10832 [2021-07-13 19:08:04,823 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3318.2ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10832 states. [2021-07-13 19:08:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10832 to 4586. [2021-07-13 19:08:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4586 states, 4584 states have (on average 2.68826352530541) internal successors, (12323), 4585 states have internal predecessors, (12323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4586 states to 4586 states and 12323 transitions. [2021-07-13 19:08:04,929 INFO L78 Accepts]: Start accepts. Automaton has 4586 states and 12323 transitions. Word has length 94 [2021-07-13 19:08:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:04,929 INFO L482 AbstractCegarLoop]: Abstraction has 4586 states and 12323 transitions. [2021-07-13 19:08:04,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4586 states and 12323 transitions. [2021-07-13 19:08:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:04,935 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:04,935 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:04,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-07-13 19:08:04,935 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1487719287, now seen corresponding path program 179 times [2021-07-13 19:08:04,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:04,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827109275] [2021-07-13 19:08:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:05,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:05,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827109275] [2021-07-13 19:08:05,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827109275] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:05,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:05,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:05,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116968753] [2021-07-13 19:08:05,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:05,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:05,450 INFO L87 Difference]: Start difference. First operand 4586 states and 12323 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:06,563 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:08:06,750 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:08:06,943 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:08:07,286 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:08:07,466 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:08:07,755 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:08:07,955 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:08:08,143 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:08:08,326 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:08:08,507 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:08:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:08,513 INFO L93 Difference]: Finished difference Result 10520 states and 27075 transitions. [2021-07-13 19:08:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:08:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:08,527 INFO L225 Difference]: With dead ends: 10520 [2021-07-13 19:08:08,527 INFO L226 Difference]: Without dead ends: 10520 [2021-07-13 19:08:08,527 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2781.1ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:08:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2021-07-13 19:08:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 4478. [2021-07-13 19:08:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.6807417336907955) internal successors, (11999), 4477 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11999 transitions. [2021-07-13 19:08:08,623 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11999 transitions. Word has length 94 [2021-07-13 19:08:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:08,624 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11999 transitions. [2021-07-13 19:08:08,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11999 transitions. [2021-07-13 19:08:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:08,629 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:08,629 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:08,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-07-13 19:08:08,629 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1050033615, now seen corresponding path program 180 times [2021-07-13 19:08:08,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:08,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955772301] [2021-07-13 19:08:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:09,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:09,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955772301] [2021-07-13 19:08:09,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955772301] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:09,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:09,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:09,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974007023] [2021-07-13 19:08:09,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:09,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:09,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:09,111 INFO L87 Difference]: Start difference. First operand 4478 states and 11999 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:09,847 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-07-13 19:08:10,016 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:10,733 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:08:10,882 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:08:11,359 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-07-13 19:08:11,492 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-07-13 19:08:11,761 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:08:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:11,902 INFO L93 Difference]: Finished difference Result 10298 states and 26274 transitions. [2021-07-13 19:08:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:11,914 INFO L225 Difference]: With dead ends: 10298 [2021-07-13 19:08:11,915 INFO L226 Difference]: Without dead ends: 10298 [2021-07-13 19:08:11,915 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2439.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2021-07-13 19:08:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 4482. [2021-07-13 19:08:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.680580357142857) internal successors, (12009), 4481 states have internal predecessors, (12009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 12009 transitions. [2021-07-13 19:08:12,006 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 12009 transitions. Word has length 94 [2021-07-13 19:08:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:12,006 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 12009 transitions. [2021-07-13 19:08:12,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 12009 transitions. [2021-07-13 19:08:12,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:12,012 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:12,012 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:12,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-07-13 19:08:12,012 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash 116887493, now seen corresponding path program 181 times [2021-07-13 19:08:12,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:12,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002230129] [2021-07-13 19:08:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:12,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:12,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002230129] [2021-07-13 19:08:12,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002230129] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:12,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:12,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:12,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294350361] [2021-07-13 19:08:12,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:12,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:12,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:12,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:12,472 INFO L87 Difference]: Start difference. First operand 4482 states and 12009 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:13,328 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:13,800 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:14,077 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:08:14,227 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:08:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:15,076 INFO L93 Difference]: Finished difference Result 10460 states and 26589 transitions. [2021-07-13 19:08:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:15,076 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:15,090 INFO L225 Difference]: With dead ends: 10460 [2021-07-13 19:08:15,090 INFO L226 Difference]: Without dead ends: 10460 [2021-07-13 19:08:15,090 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2266.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2021-07-13 19:08:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 4484. [2021-07-13 19:08:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4482 states have (on average 2.680499776885319) internal successors, (12014), 4483 states have internal predecessors, (12014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:15,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 12014 transitions. [2021-07-13 19:08:15,189 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 12014 transitions. Word has length 94 [2021-07-13 19:08:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:15,189 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 12014 transitions. [2021-07-13 19:08:15,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:15,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 12014 transitions. [2021-07-13 19:08:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:15,194 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:15,194 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:15,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-07-13 19:08:15,194 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:15,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1797901239, now seen corresponding path program 182 times [2021-07-13 19:08:15,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:15,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238642904] [2021-07-13 19:08:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:15,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:15,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238642904] [2021-07-13 19:08:15,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238642904] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:15,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:15,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:15,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994979255] [2021-07-13 19:08:15,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:15,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:15,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:15,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:15,608 INFO L87 Difference]: Start difference. First operand 4484 states and 12014 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:16,882 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:08:17,037 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:17,191 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:08:17,894 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:08:18,038 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:08:18,188 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:08:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:18,195 INFO L93 Difference]: Finished difference Result 10258 states and 26185 transitions. [2021-07-13 19:08:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:08:18,195 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:18,209 INFO L225 Difference]: With dead ends: 10258 [2021-07-13 19:08:18,210 INFO L226 Difference]: Without dead ends: 10258 [2021-07-13 19:08:18,210 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2244.1ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:08:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2021-07-13 19:08:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 4478. [2021-07-13 19:08:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.6807417336907955) internal successors, (11999), 4477 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:18,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11999 transitions. [2021-07-13 19:08:18,312 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11999 transitions. Word has length 94 [2021-07-13 19:08:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:18,313 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11999 transitions. [2021-07-13 19:08:18,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11999 transitions. [2021-07-13 19:08:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:18,318 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:18,318 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:18,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-07-13 19:08:18,318 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:18,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2013631911, now seen corresponding path program 183 times [2021-07-13 19:08:18,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:18,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111021469] [2021-07-13 19:08:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:18,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:18,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111021469] [2021-07-13 19:08:18,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111021469] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:18,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:18,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:18,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512463298] [2021-07-13 19:08:18,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:18,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:18,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:18,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:18,842 INFO L87 Difference]: Start difference. First operand 4478 states and 11999 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:19,689 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:19,888 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:20,071 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:08:20,450 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:08:20,653 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:08:20,860 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:08:21,145 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:08:21,395 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:08:21,527 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:08:21,766 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:08:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:21,901 INFO L93 Difference]: Finished difference Result 11778 states and 29977 transitions. [2021-07-13 19:08:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:21,916 INFO L225 Difference]: With dead ends: 11778 [2021-07-13 19:08:21,917 INFO L226 Difference]: Without dead ends: 11778 [2021-07-13 19:08:21,917 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2760.8ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11778 states. [2021-07-13 19:08:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11778 to 4526. [2021-07-13 19:08:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4524 states have (on average 2.684129089301503) internal successors, (12143), 4525 states have internal predecessors, (12143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 12143 transitions. [2021-07-13 19:08:22,018 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 12143 transitions. Word has length 94 [2021-07-13 19:08:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:22,018 INFO L482 AbstractCegarLoop]: Abstraction has 4526 states and 12143 transitions. [2021-07-13 19:08:22,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:22,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 12143 transitions. [2021-07-13 19:08:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:22,023 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:22,023 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:22,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-07-13 19:08:22,023 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:22,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1723526533, now seen corresponding path program 184 times [2021-07-13 19:08:22,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:22,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386040720] [2021-07-13 19:08:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:22,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:22,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386040720] [2021-07-13 19:08:22,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386040720] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:22,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:22,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:22,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938325861] [2021-07-13 19:08:22,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:22,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:22,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:22,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:22,409 INFO L87 Difference]: Start difference. First operand 4526 states and 12143 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:23,271 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:23,478 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:23,667 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:08:23,890 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:08:24,114 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:08:24,520 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:08:24,674 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:08:24,950 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:08:25,089 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:08:25,243 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:08:25,385 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:08:25,531 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:08:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:25,537 INFO L93 Difference]: Finished difference Result 12452 states and 31773 transitions. [2021-07-13 19:08:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:08:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:25,553 INFO L225 Difference]: With dead ends: 12452 [2021-07-13 19:08:25,554 INFO L226 Difference]: Without dead ends: 12452 [2021-07-13 19:08:25,554 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2624.1ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:08:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2021-07-13 19:08:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 4490. [2021-07-13 19:08:25,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.681595365418895) internal successors, (12035), 4489 states have internal predecessors, (12035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12035 transitions. [2021-07-13 19:08:25,658 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12035 transitions. Word has length 94 [2021-07-13 19:08:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:25,658 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12035 transitions. [2021-07-13 19:08:25,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12035 transitions. [2021-07-13 19:08:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:25,663 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:25,663 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:25,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-07-13 19:08:25,663 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash -173689619, now seen corresponding path program 185 times [2021-07-13 19:08:25,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:25,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929436799] [2021-07-13 19:08:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:26,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:26,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929436799] [2021-07-13 19:08:26,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929436799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:26,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:26,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:26,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139723525] [2021-07-13 19:08:26,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:26,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:26,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:26,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:26,023 INFO L87 Difference]: Start difference. First operand 4490 states and 12035 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:26,841 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:27,157 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:27,308 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:08:27,490 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:08:27,679 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:08:27,967 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:08:28,110 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:08:28,253 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:08:28,426 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:08:28,553 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:28,700 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:08:28,848 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:08:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:28,857 INFO L93 Difference]: Finished difference Result 11402 states and 28985 transitions. [2021-07-13 19:08:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:28,857 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:28,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:28,871 INFO L225 Difference]: With dead ends: 11402 [2021-07-13 19:08:28,872 INFO L226 Difference]: Without dead ends: 11402 [2021-07-13 19:08:28,872 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2439.1ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11402 states. [2021-07-13 19:08:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11402 to 4492. [2021-07-13 19:08:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4490 states have (on average 2.681514476614699) internal successors, (12040), 4491 states have internal predecessors, (12040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 12040 transitions. [2021-07-13 19:08:28,970 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 12040 transitions. Word has length 94 [2021-07-13 19:08:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:28,971 INFO L482 AbstractCegarLoop]: Abstraction has 4492 states and 12040 transitions. [2021-07-13 19:08:28,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 12040 transitions. [2021-07-13 19:08:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:28,976 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:28,976 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:28,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-07-13 19:08:28,976 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:28,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1594846135, now seen corresponding path program 186 times [2021-07-13 19:08:28,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:28,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366319236] [2021-07-13 19:08:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:29,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:29,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366319236] [2021-07-13 19:08:29,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366319236] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:29,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:29,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:29,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557721388] [2021-07-13 19:08:29,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:29,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:29,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:29,460 INFO L87 Difference]: Start difference. First operand 4492 states and 12040 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:30,335 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:30,538 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:30,882 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:31,069 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:08:31,270 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:08:31,456 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:31,674 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:08:32,032 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:08:32,203 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:08:32,374 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:08:32,550 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:08:32,736 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:32,903 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:08:33,075 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:08:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:33,081 INFO L93 Difference]: Finished difference Result 11384 states and 28947 transitions. [2021-07-13 19:08:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:08:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:33,095 INFO L225 Difference]: With dead ends: 11384 [2021-07-13 19:08:33,095 INFO L226 Difference]: Without dead ends: 11384 [2021-07-13 19:08:33,096 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3231.3ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:08:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11384 states. [2021-07-13 19:08:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11384 to 4490. [2021-07-13 19:08:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.681595365418895) internal successors, (12035), 4489 states have internal predecessors, (12035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12035 transitions. [2021-07-13 19:08:33,193 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12035 transitions. Word has length 94 [2021-07-13 19:08:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:33,193 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12035 transitions. [2021-07-13 19:08:33,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12035 transitions. [2021-07-13 19:08:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:33,198 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:33,198 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:33,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-07-13 19:08:33,202 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2024934153, now seen corresponding path program 187 times [2021-07-13 19:08:33,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:33,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535400088] [2021-07-13 19:08:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:33,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:33,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535400088] [2021-07-13 19:08:33,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535400088] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:33,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:33,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:33,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092231182] [2021-07-13 19:08:33,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:33,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:33,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:33,723 INFO L87 Difference]: Start difference. First operand 4490 states and 12035 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:34,571 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:34,813 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:35,011 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 19:08:35,225 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-07-13 19:08:35,403 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:08:35,632 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-07-13 19:08:36,073 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-07-13 19:08:36,259 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:36,482 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:08:36,863 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 19:08:37,066 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-07-13 19:08:37,295 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:08:37,509 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-07-13 19:08:37,710 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:08:37,934 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-07-13 19:08:38,137 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 19:08:38,347 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:08:38,540 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:38,744 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:08:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:38,755 INFO L93 Difference]: Finished difference Result 11757 states and 29976 transitions. [2021-07-13 19:08:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:08:38,755 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:38,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:38,771 INFO L225 Difference]: With dead ends: 11757 [2021-07-13 19:08:38,771 INFO L226 Difference]: Without dead ends: 11757 [2021-07-13 19:08:38,771 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4528.6ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:08:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11757 states. [2021-07-13 19:08:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11757 to 4502. [2021-07-13 19:08:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 2.6824444444444446) internal successors, (12071), 4501 states have internal predecessors, (12071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 12071 transitions. [2021-07-13 19:08:38,883 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 12071 transitions. Word has length 94 [2021-07-13 19:08:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:38,883 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 12071 transitions. [2021-07-13 19:08:38,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 12071 transitions. [2021-07-13 19:08:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:38,888 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:38,888 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:38,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-07-13 19:08:38,889 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -987114255, now seen corresponding path program 188 times [2021-07-13 19:08:38,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:38,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096616434] [2021-07-13 19:08:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:39,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:39,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096616434] [2021-07-13 19:08:39,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096616434] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:39,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:39,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:39,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945894447] [2021-07-13 19:08:39,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:39,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:39,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:39,475 INFO L87 Difference]: Start difference. First operand 4502 states and 12071 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:40,320 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-07-13 19:08:40,523 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:08:40,723 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-07-13 19:08:40,936 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:08:41,330 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-07-13 19:08:41,532 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:08:41,732 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:41,955 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:08:42,249 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-07-13 19:08:42,380 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:08:42,517 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:08:42,768 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-07-13 19:08:42,901 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:42,906 INFO L93 Difference]: Finished difference Result 10926 states and 27895 transitions. [2021-07-13 19:08:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:08:42,906 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:42,920 INFO L225 Difference]: With dead ends: 10926 [2021-07-13 19:08:42,920 INFO L226 Difference]: Without dead ends: 10926 [2021-07-13 19:08:42,921 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3093.9ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:08:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10926 states. [2021-07-13 19:08:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10926 to 4454. [2021-07-13 19:08:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.6790206648697215) internal successors, (11927), 4453 states have internal predecessors, (11927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11927 transitions. [2021-07-13 19:08:43,021 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11927 transitions. Word has length 94 [2021-07-13 19:08:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:43,021 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11927 transitions. [2021-07-13 19:08:43,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11927 transitions. [2021-07-13 19:08:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:43,026 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:43,026 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:43,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-07-13 19:08:43,026 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1852203947, now seen corresponding path program 189 times [2021-07-13 19:08:43,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:43,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913714969] [2021-07-13 19:08:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:43,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:43,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913714969] [2021-07-13 19:08:43,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913714969] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:43,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:43,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:43,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877848687] [2021-07-13 19:08:43,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:43,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:43,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:43,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:43,407 INFO L87 Difference]: Start difference. First operand 4454 states and 11927 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:44,510 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:08:44,670 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-07-13 19:08:44,880 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:08:45,104 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:08:45,333 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:08:45,772 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:08:45,906 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:08:46,054 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-13 19:08:46,304 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:08:46,446 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:08:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:46,456 INFO L93 Difference]: Finished difference Result 9342 states and 23873 transitions. [2021-07-13 19:08:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:46,468 INFO L225 Difference]: With dead ends: 9342 [2021-07-13 19:08:46,468 INFO L226 Difference]: Without dead ends: 9342 [2021-07-13 19:08:46,468 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2603.1ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9342 states. [2021-07-13 19:08:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9342 to 4466. [2021-07-13 19:08:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.6785394265232974) internal successors, (11957), 4465 states have internal predecessors, (11957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11957 transitions. [2021-07-13 19:08:46,551 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11957 transitions. Word has length 94 [2021-07-13 19:08:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:46,551 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11957 transitions. [2021-07-13 19:08:46,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11957 transitions. [2021-07-13 19:08:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:46,556 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:46,556 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:46,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-07-13 19:08:46,556 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash 919057825, now seen corresponding path program 190 times [2021-07-13 19:08:46,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:46,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82862789] [2021-07-13 19:08:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:46,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:46,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82862789] [2021-07-13 19:08:46,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82862789] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:46,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:46,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:46,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187109134] [2021-07-13 19:08:46,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:46,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:46,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:46,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:46,986 INFO L87 Difference]: Start difference. First operand 4466 states and 11957 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:48,100 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-07-13 19:08:48,290 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:48,475 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:08:48,707 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:08:48,937 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:08:49,396 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:08:49,531 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:08:49,673 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-13 19:08:49,958 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:08:50,101 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:08:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:50,111 INFO L93 Difference]: Finished difference Result 9820 states and 24809 transitions. [2021-07-13 19:08:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:50,112 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:50,122 INFO L225 Difference]: With dead ends: 9820 [2021-07-13 19:08:50,122 INFO L226 Difference]: Without dead ends: 9820 [2021-07-13 19:08:50,123 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2658.2ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2021-07-13 19:08:50,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 4468. [2021-07-13 19:08:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 2.67845947156292) internal successors, (11962), 4467 states have internal predecessors, (11962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 11962 transitions. [2021-07-13 19:08:50,208 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 11962 transitions. Word has length 94 [2021-07-13 19:08:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:50,209 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 11962 transitions. [2021-07-13 19:08:50,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 11962 transitions. [2021-07-13 19:08:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:50,214 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:50,214 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:50,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-07-13 19:08:50,214 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:50,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1694895725, now seen corresponding path program 191 times [2021-07-13 19:08:50,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:50,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975267929] [2021-07-13 19:08:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:50,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:50,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975267929] [2021-07-13 19:08:50,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975267929] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:50,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:50,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:50,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017088039] [2021-07-13 19:08:50,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:50,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:50,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:50,714 INFO L87 Difference]: Start difference. First operand 4468 states and 11962 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:51,820 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:52,090 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-07-13 19:08:52,216 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:08:52,370 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:08:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:53,184 INFO L93 Difference]: Finished difference Result 9618 states and 24405 transitions. [2021-07-13 19:08:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:08:53,184 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:53,196 INFO L225 Difference]: With dead ends: 9618 [2021-07-13 19:08:53,196 INFO L226 Difference]: Without dead ends: 9618 [2021-07-13 19:08:53,196 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2224.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:08:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9618 states. [2021-07-13 19:08:53,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9618 to 4462. [2021-07-13 19:08:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.678699551569507) internal successors, (11947), 4461 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11947 transitions. [2021-07-13 19:08:53,285 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11947 transitions. Word has length 94 [2021-07-13 19:08:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:53,285 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11947 transitions. [2021-07-13 19:08:53,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11947 transitions. [2021-07-13 19:08:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:53,290 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:53,290 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:53,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-07-13 19:08:53,290 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:53,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1464509039, now seen corresponding path program 192 times [2021-07-13 19:08:53,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:53,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799080520] [2021-07-13 19:08:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:53,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:53,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799080520] [2021-07-13 19:08:53,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799080520] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:53,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:53,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:53,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745506983] [2021-07-13 19:08:53,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:53,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:53,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:53,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:53,777 INFO L87 Difference]: Start difference. First operand 4462 states and 11947 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:54,908 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:08:55,081 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:55,260 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:08:55,474 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:08:55,707 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:08:56,113 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:08:56,248 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:08:56,393 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-13 19:08:56,650 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:08:56,793 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:08:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:56,803 INFO L93 Difference]: Finished difference Result 9548 states and 24284 transitions. [2021-07-13 19:08:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:08:56,803 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:08:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:56,815 INFO L225 Difference]: With dead ends: 9548 [2021-07-13 19:08:56,815 INFO L226 Difference]: Without dead ends: 9548 [2021-07-13 19:08:56,816 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2696.6ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:08:56,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2021-07-13 19:08:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 4468. [2021-07-13 19:08:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 2.67845947156292) internal successors, (11962), 4467 states have internal predecessors, (11962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 11962 transitions. [2021-07-13 19:08:56,906 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 11962 transitions. Word has length 94 [2021-07-13 19:08:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:56,906 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 11962 transitions. [2021-07-13 19:08:56,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 11962 transitions. [2021-07-13 19:08:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:08:56,911 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:56,911 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:56,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-07-13 19:08:56,911 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1149444511, now seen corresponding path program 193 times [2021-07-13 19:08:56,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:56,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614375265] [2021-07-13 19:08:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:57,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:57,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614375265] [2021-07-13 19:08:57,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614375265] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:57,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:57,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:08:57,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666529169] [2021-07-13 19:08:57,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:08:57,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:57,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:08:57,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:08:57,423 INFO L87 Difference]: Start difference. First operand 4468 states and 11962 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:58,626 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:08:58,799 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:08:58,994 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:08:59,208 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:08:59,399 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:08:59,622 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:09:00,088 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:09:00,237 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:09:00,380 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-13 19:09:00,629 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-07-13 19:09:00,775 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-07-13 19:09:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:00,785 INFO L93 Difference]: Finished difference Result 9822 states and 24811 transitions. [2021-07-13 19:09:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:09:00,785 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:00,797 INFO L225 Difference]: With dead ends: 9822 [2021-07-13 19:09:00,797 INFO L226 Difference]: Without dead ends: 9822 [2021-07-13 19:09:00,798 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2984.6ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:09:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9822 states. [2021-07-13 19:09:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9822 to 4466. [2021-07-13 19:09:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.6785394265232974) internal successors, (11957), 4465 states have internal predecessors, (11957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11957 transitions. [2021-07-13 19:09:00,888 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11957 transitions. Word has length 94 [2021-07-13 19:09:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:00,888 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11957 transitions. [2021-07-13 19:09:00,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11957 transitions. [2021-07-13 19:09:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:00,893 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:00,893 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:00,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-07-13 19:09:00,893 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:00,893 INFO L82 PathProgramCache]: Analyzing trace with hash -59151189, now seen corresponding path program 194 times [2021-07-13 19:09:00,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:00,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599229232] [2021-07-13 19:09:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:01,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:01,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599229232] [2021-07-13 19:09:01,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599229232] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:01,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:01,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:01,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970234005] [2021-07-13 19:09:01,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:01,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:01,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:01,404 INFO L87 Difference]: Start difference. First operand 4466 states and 11957 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:02,645 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:09:02,815 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:09:03,002 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:09:03,191 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:09:03,413 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:09:03,611 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:03,840 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:09:04,273 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-07-13 19:09:04,404 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-07-13 19:09:04,545 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-07-13 19:09:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:04,879 INFO L93 Difference]: Finished difference Result 9344 states and 23875 transitions. [2021-07-13 19:09:04,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:09:04,879 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:04,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:04,890 INFO L225 Difference]: With dead ends: 9344 [2021-07-13 19:09:04,890 INFO L226 Difference]: Without dead ends: 9344 [2021-07-13 19:09:04,891 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3050.5ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:09:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2021-07-13 19:09:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 4454. [2021-07-13 19:09:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.6790206648697215) internal successors, (11927), 4453 states have internal predecessors, (11927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11927 transitions. [2021-07-13 19:09:04,974 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11927 transitions. Word has length 94 [2021-07-13 19:09:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:04,975 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11927 transitions. [2021-07-13 19:09:04,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:04,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11927 transitions. [2021-07-13 19:09:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:04,979 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:04,980 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:04,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-07-13 19:09:04,980 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash -318487953, now seen corresponding path program 195 times [2021-07-13 19:09:04,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:04,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718179415] [2021-07-13 19:09:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:05,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:05,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718179415] [2021-07-13 19:09:05,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718179415] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:05,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:05,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:05,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882824296] [2021-07-13 19:09:05,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:05,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:05,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:05,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:05,342 INFO L87 Difference]: Start difference. First operand 4454 states and 11927 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:06,147 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:09:06,341 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:09:06,526 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:09:06,904 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:09:07,103 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:09:07,312 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:09:07,670 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:09:07,825 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:07,990 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:09:08,159 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-07-13 19:09:08,316 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-07-13 19:09:08,475 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-07-13 19:09:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:08,481 INFO L93 Difference]: Finished difference Result 9616 states and 24620 transitions. [2021-07-13 19:09:08,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:09:08,481 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:08,496 INFO L225 Difference]: With dead ends: 9616 [2021-07-13 19:09:08,496 INFO L226 Difference]: Without dead ends: 9616 [2021-07-13 19:09:08,497 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2717.2ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:09:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9616 states. [2021-07-13 19:09:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9616 to 4526. [2021-07-13 19:09:08,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4524 states have (on average 2.684129089301503) internal successors, (12143), 4525 states have internal predecessors, (12143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 12143 transitions. [2021-07-13 19:09:08,609 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 12143 transitions. Word has length 94 [2021-07-13 19:09:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:08,610 INFO L482 AbstractCegarLoop]: Abstraction has 4526 states and 12143 transitions. [2021-07-13 19:09:08,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:08,610 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 12143 transitions. [2021-07-13 19:09:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:08,615 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:08,615 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:08,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-07-13 19:09:08,615 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:08,616 INFO L82 PathProgramCache]: Analyzing trace with hash -608593331, now seen corresponding path program 196 times [2021-07-13 19:09:08,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:08,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258804284] [2021-07-13 19:09:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:09,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:09,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258804284] [2021-07-13 19:09:09,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258804284] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:09,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:09,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:09,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084136501] [2021-07-13 19:09:09,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:09,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:09,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:09,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:09,059 INFO L87 Difference]: Start difference. First operand 4526 states and 12143 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:09,955 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:09:10,116 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-07-13 19:09:10,318 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-07-13 19:09:10,559 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-07-13 19:09:10,941 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-07-13 19:09:11,147 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:09:11,472 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-07-13 19:09:11,687 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-07-13 19:09:11,911 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-07-13 19:09:12,128 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-07-13 19:09:12,342 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-07-13 19:09:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:12,349 INFO L93 Difference]: Finished difference Result 10290 states and 26416 transitions. [2021-07-13 19:09:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-13 19:09:12,350 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:12,365 INFO L225 Difference]: With dead ends: 10290 [2021-07-13 19:09:12,365 INFO L226 Difference]: Without dead ends: 10290 [2021-07-13 19:09:12,365 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2958.6ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-07-13 19:09:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2021-07-13 19:09:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 4490. [2021-07-13 19:09:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.681595365418895) internal successors, (12035), 4489 states have internal predecessors, (12035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12035 transitions. [2021-07-13 19:09:12,466 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12035 transitions. Word has length 94 [2021-07-13 19:09:12,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:12,466 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12035 transitions. [2021-07-13 19:09:12,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12035 transitions. [2021-07-13 19:09:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:12,471 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:12,471 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:12,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-07-13 19:09:12,472 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1789157813, now seen corresponding path program 197 times [2021-07-13 19:09:12,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:12,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529260385] [2021-07-13 19:09:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:12,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:12,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529260385] [2021-07-13 19:09:12,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529260385] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:12,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:12,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:12,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738851548] [2021-07-13 19:09:12,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:12,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:12,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:12,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:12,867 INFO L87 Difference]: Start difference. First operand 4490 states and 12035 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:14,130 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:09:14,297 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:09:14,779 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:09:14,957 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:09:15,105 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:09:15,276 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:09:15,452 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:09:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:15,463 INFO L93 Difference]: Finished difference Result 10064 states and 25619 transitions. [2021-07-13 19:09:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:09:15,463 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:15,475 INFO L225 Difference]: With dead ends: 10064 [2021-07-13 19:09:15,475 INFO L226 Difference]: Without dead ends: 10064 [2021-07-13 19:09:15,475 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2302.1ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:09:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2021-07-13 19:09:15,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 4492. [2021-07-13 19:09:15,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4490 states have (on average 2.681514476614699) internal successors, (12040), 4491 states have internal predecessors, (12040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 12040 transitions. [2021-07-13 19:09:15,570 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 12040 transitions. Word has length 94 [2021-07-13 19:09:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:15,570 INFO L482 AbstractCegarLoop]: Abstraction has 4492 states and 12040 transitions. [2021-07-13 19:09:15,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:15,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 12040 transitions. [2021-07-13 19:09:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:15,575 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:15,575 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:15,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-07-13 19:09:15,576 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:15,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:15,576 INFO L82 PathProgramCache]: Analyzing trace with hash -737273729, now seen corresponding path program 198 times [2021-07-13 19:09:15,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:15,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883109855] [2021-07-13 19:09:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:15,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:15,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883109855] [2021-07-13 19:09:15,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883109855] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:15,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:15,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:16,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634047145] [2021-07-13 19:09:16,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:16,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:16,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:16,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:16,000 INFO L87 Difference]: Start difference. First operand 4492 states and 12040 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:17,272 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:09:17,421 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:17,569 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:09:17,896 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-07-13 19:09:18,040 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-07-13 19:09:18,184 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:09:18,336 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:09:18,505 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:09:18,656 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:09:18,803 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:09:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:18,809 INFO L93 Difference]: Finished difference Result 10046 states and 25581 transitions. [2021-07-13 19:09:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:09:18,809 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:18,822 INFO L225 Difference]: With dead ends: 10046 [2021-07-13 19:09:18,822 INFO L226 Difference]: Without dead ends: 10046 [2021-07-13 19:09:18,822 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2515.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:09:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2021-07-13 19:09:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 4490. [2021-07-13 19:09:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.681595365418895) internal successors, (12035), 4489 states have internal predecessors, (12035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12035 transitions. [2021-07-13 19:09:18,916 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12035 transitions. Word has length 94 [2021-07-13 19:09:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:18,916 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12035 transitions. [2021-07-13 19:09:18,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12035 transitions. [2021-07-13 19:09:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:18,921 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:18,922 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:18,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-07-13 19:09:18,922 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:18,922 INFO L82 PathProgramCache]: Analyzing trace with hash -62086721, now seen corresponding path program 199 times [2021-07-13 19:09:18,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:18,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753892403] [2021-07-13 19:09:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:19,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:19,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753892403] [2021-07-13 19:09:19,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753892403] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:19,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:19,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:19,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895933401] [2021-07-13 19:09:19,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:19,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:19,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:19,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:19,379 INFO L87 Difference]: Start difference. First operand 4490 states and 12035 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:20,356 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:09:20,553 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:09:20,771 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:09:20,948 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:09:21,178 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:09:21,580 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:09:21,709 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:21,952 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:09:22,382 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:09:22,583 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:09:22,772 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:09:22,979 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:09:23,178 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:09:23,394 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:09:23,593 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:09:23,798 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:09:24,001 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:24,221 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:09:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:24,232 INFO L93 Difference]: Finished difference Result 11507 states and 29261 transitions. [2021-07-13 19:09:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-13 19:09:24,232 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:24,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:24,246 INFO L225 Difference]: With dead ends: 11507 [2021-07-13 19:09:24,246 INFO L226 Difference]: Without dead ends: 11507 [2021-07-13 19:09:24,247 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4179.8ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-07-13 19:09:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11507 states. [2021-07-13 19:09:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11507 to 4502. [2021-07-13 19:09:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 2.6824444444444446) internal successors, (12071), 4501 states have internal predecessors, (12071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 12071 transitions. [2021-07-13 19:09:24,346 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 12071 transitions. Word has length 94 [2021-07-13 19:09:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:24,346 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 12071 transitions. [2021-07-13 19:09:24,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 12071 transitions. [2021-07-13 19:09:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:24,351 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:24,351 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:24,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-07-13 19:09:24,351 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:24,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash 975733177, now seen corresponding path program 200 times [2021-07-13 19:09:24,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:24,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434378686] [2021-07-13 19:09:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:24,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:24,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434378686] [2021-07-13 19:09:24,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434378686] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:24,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:24,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:24,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65537895] [2021-07-13 19:09:24,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:24,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:24,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:24,857 INFO L87 Difference]: Start difference. First operand 4502 states and 12071 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:25,745 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:09:25,929 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-07-13 19:09:26,121 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:09:26,306 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:09:26,692 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:09:26,907 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:09:27,104 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:27,332 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:09:27,742 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-07-13 19:09:27,943 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-07-13 19:09:28,147 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-07-13 19:09:28,327 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:09:28,539 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-07-13 19:09:28,737 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:28,744 INFO L93 Difference]: Finished difference Result 10676 states and 27180 transitions. [2021-07-13 19:09:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:09:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:28,757 INFO L225 Difference]: With dead ends: 10676 [2021-07-13 19:09:28,758 INFO L226 Difference]: Without dead ends: 10676 [2021-07-13 19:09:28,758 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3369.5ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:09:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10676 states. [2021-07-13 19:09:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10676 to 4478. [2021-07-13 19:09:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.6807417336907955) internal successors, (11999), 4477 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11999 transitions. [2021-07-13 19:09:28,853 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11999 transitions. Word has length 94 [2021-07-13 19:09:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:28,854 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11999 transitions. [2021-07-13 19:09:28,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11999 transitions. [2021-07-13 19:09:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:28,859 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:28,859 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:28,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-07-13 19:09:28,859 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:28,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1002791595, now seen corresponding path program 201 times [2021-07-13 19:09:28,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:28,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578887557] [2021-07-13 19:09:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:29,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:29,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578887557] [2021-07-13 19:09:29,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578887557] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:29,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:29,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:29,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437530794] [2021-07-13 19:09:29,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:29,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:29,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:29,284 INFO L87 Difference]: Start difference. First operand 4478 states and 11999 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:30,094 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:09:30,446 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:09:30,599 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:09:30,780 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-07-13 19:09:30,995 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-07-13 19:09:31,215 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-07-13 19:09:31,523 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:09:31,675 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:09:31,828 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:09:31,992 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:09:32,126 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:09:32,275 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:09:32,415 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:09:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:32,424 INFO L93 Difference]: Finished difference Result 9238 states and 23597 transitions. [2021-07-13 19:09:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-13 19:09:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:32,437 INFO L225 Difference]: With dead ends: 9238 [2021-07-13 19:09:32,437 INFO L226 Difference]: Without dead ends: 9238 [2021-07-13 19:09:32,437 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2742.1ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-07-13 19:09:32,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9238 states. [2021-07-13 19:09:32,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9238 to 4484. [2021-07-13 19:09:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4482 states have (on average 2.680499776885319) internal successors, (12014), 4483 states have internal predecessors, (12014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 12014 transitions. [2021-07-13 19:09:32,542 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 12014 transitions. Word has length 94 [2021-07-13 19:09:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:32,542 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 12014 transitions. [2021-07-13 19:09:32,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 12014 transitions. [2021-07-13 19:09:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:32,547 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:32,547 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:32,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-07-13 19:09:32,547 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1523639947, now seen corresponding path program 202 times [2021-07-13 19:09:32,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:32,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995308093] [2021-07-13 19:09:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:32,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:32,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995308093] [2021-07-13 19:09:32,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995308093] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:32,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:32,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:32,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060871620] [2021-07-13 19:09:32,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:32,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:32,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:32,985 INFO L87 Difference]: Start difference. First operand 4484 states and 12014 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:33,841 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:09:34,199 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:09:34,343 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:09:34,505 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:09:34,727 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:09:34,886 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:35,079 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:09:35,530 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:09:35,662 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:09:35,801 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:09:35,943 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:09:36,126 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:09:36,286 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:09:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:36,296 INFO L93 Difference]: Finished difference Result 9512 states and 24124 transitions. [2021-07-13 19:09:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-13 19:09:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:36,309 INFO L225 Difference]: With dead ends: 9512 [2021-07-13 19:09:36,309 INFO L226 Difference]: Without dead ends: 9512 [2021-07-13 19:09:36,309 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2844.7ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-07-13 19:09:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2021-07-13 19:09:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 4482. [2021-07-13 19:09:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.680580357142857) internal successors, (12009), 4481 states have internal predecessors, (12009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 12009 transitions. [2021-07-13 19:09:36,401 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 12009 transitions. Word has length 94 [2021-07-13 19:09:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:36,401 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 12009 transitions. [2021-07-13 19:09:36,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 12009 transitions. [2021-07-13 19:09:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:36,406 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:36,406 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:36,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-07-13 19:09:36,406 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2058892117, now seen corresponding path program 203 times [2021-07-13 19:09:36,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:36,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993028335] [2021-07-13 19:09:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:36,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:36,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993028335] [2021-07-13 19:09:36,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993028335] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:36,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:36,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:36,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316050148] [2021-07-13 19:09:36,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:36,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:36,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:36,929 INFO L87 Difference]: Start difference. First operand 4482 states and 12009 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:38,094 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-07-13 19:09:38,246 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:09:38,400 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-07-13 19:09:38,583 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-07-13 19:09:38,757 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:38,956 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-07-13 19:09:39,270 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-07-13 19:09:39,428 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-07-13 19:09:39,584 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-07-13 19:09:39,747 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-07-13 19:09:39,888 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-07-13 19:09:40,039 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-07-13 19:09:40,195 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-07-13 19:09:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:40,202 INFO L93 Difference]: Finished difference Result 9262 states and 23650 transitions. [2021-07-13 19:09:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-07-13 19:09:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:40,214 INFO L225 Difference]: With dead ends: 9262 [2021-07-13 19:09:40,214 INFO L226 Difference]: Without dead ends: 9262 [2021-07-13 19:09:40,214 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2994.6ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-07-13 19:09:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2021-07-13 19:09:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 4478. [2021-07-13 19:09:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.6807417336907955) internal successors, (11999), 4477 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:40,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11999 transitions. [2021-07-13 19:09:40,304 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11999 transitions. Word has length 94 [2021-07-13 19:09:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:40,304 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11999 transitions. [2021-07-13 19:09:40,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11999 transitions. [2021-07-13 19:09:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:40,309 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:40,309 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:40,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-07-13 19:09:40,309 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:40,309 INFO L82 PathProgramCache]: Analyzing trace with hash -262224503, now seen corresponding path program 204 times [2021-07-13 19:09:40,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:40,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676773977] [2021-07-13 19:09:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:40,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:40,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676773977] [2021-07-13 19:09:40,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676773977] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:40,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:40,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:40,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110039700] [2021-07-13 19:09:40,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:40,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:40,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:40,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:40,882 INFO L87 Difference]: Start difference. First operand 4478 states and 11999 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:41,771 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-07-13 19:09:41,951 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-07-13 19:09:42,149 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-07-13 19:09:42,343 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-07-13 19:09:42,562 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-07-13 19:09:42,740 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-07-13 19:09:42,978 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-07-13 19:09:43,424 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:09:43,647 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-07-13 19:09:43,833 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-07-13 19:09:44,096 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:09:44,487 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-07-13 19:09:44,690 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-07-13 19:09:44,865 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-07-13 19:09:45,077 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-07-13 19:09:45,264 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-07-13 19:09:45,515 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-07-13 19:09:45,694 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-07-13 19:09:45,902 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-07-13 19:09:46,082 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-07-13 19:09:46,285 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-07-13 19:09:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:46,295 INFO L93 Difference]: Finished difference Result 9624 states and 24672 transitions. [2021-07-13 19:09:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-07-13 19:09:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-07-13 19:09:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:46,308 INFO L225 Difference]: With dead ends: 9624 [2021-07-13 19:09:46,309 INFO L226 Difference]: Without dead ends: 9624 [2021-07-13 19:09:46,309 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4763.4ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-07-13 19:09:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2021-07-13 19:09:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 4514. [2021-07-13 19:09:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4512 states have (on average 2.6832890070921986) internal successors, (12107), 4513 states have internal predecessors, (12107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 12107 transitions. [2021-07-13 19:09:46,398 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 12107 transitions. Word has length 94 [2021-07-13 19:09:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:46,399 INFO L482 AbstractCegarLoop]: Abstraction has 4514 states and 12107 transitions. [2021-07-13 19:09:46,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 12107 transitions. [2021-07-13 19:09:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-07-13 19:09:46,404 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:46,404 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:46,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-07-13 19:09:46,404 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:46,404 INFO L82 PathProgramCache]: Analyzing trace with hash 775595395, now seen corresponding path program 205 times [2021-07-13 19:09:46,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:46,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23055642] [2021-07-13 19:09:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:46,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:46,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23055642] [2021-07-13 19:09:46,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23055642] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:46,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:46,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-07-13 19:09:46,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111757118] [2021-07-13 19:09:46,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-13 19:09:46,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:46,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-13 19:09:46,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-07-13 19:09:46,965 INFO L87 Difference]: Start difference. First operand 4514 states and 12107 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-07-13 19:09:47,637 WARN L222 SmtUtils]: Removed 7 from assertion stack [2021-07-13 19:09:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 19:09:47,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-07-13 19:09:47,638 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 19:09:47,639 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:09:47,640 WARN L196 ceAbstractionStarter]: Timeout [2021-07-13 19:09:47,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:09:47 BasicIcfg [2021-07-13 19:09:47,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:09:47,641 INFO L168 Benchmark]: Toolchain (without parser) took 850883.04 ms. Allocated memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: 917.5 MB). Free memory was 117.1 MB in the beginning and 965.6 MB in the end (delta: -848.5 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:47,641 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 157.3 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:09:47,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.40 ms. Allocated memory is still 157.3 MB. Free memory was 116.9 MB in the beginning and 95.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:47,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.67 ms. Allocated memory is still 157.3 MB. Free memory was 95.1 MB in the beginning and 91.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:47,641 INFO L168 Benchmark]: Boogie Preprocessor took 51.06 ms. Allocated memory is still 157.3 MB. Free memory was 91.9 MB in the beginning and 89.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:47,641 INFO L168 Benchmark]: RCFGBuilder took 459.83 ms. Allocated memory is still 157.3 MB. Free memory was 89.4 MB in the beginning and 95.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:47,643 INFO L168 Benchmark]: TraceAbstraction took 849474.43 ms. Allocated memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: 917.5 MB). Free memory was 94.8 MB in the beginning and 965.6 MB in the end (delta: -870.8 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:47,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 157.3 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 823.40 ms. Allocated memory is still 157.3 MB. Free memory was 116.9 MB in the beginning and 95.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 69.67 ms. Allocated memory is still 157.3 MB. Free memory was 95.1 MB in the beginning and 91.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.06 ms. Allocated memory is still 157.3 MB. Free memory was 91.9 MB in the beginning and 89.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 459.83 ms. Allocated memory is still 157.3 MB. Free memory was 89.4 MB in the beginning and 95.3 MB in the end (delta: -5.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 849474.43 ms. Allocated memory was 157.3 MB in the beginning and 1.1 GB in the end (delta: 917.5 MB). Free memory was 94.8 MB in the beginning and 965.6 MB in the end (delta: -870.8 MB). Peak memory consumption was 46.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4514states) and FLOYD_HOARE automaton (currently 11 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 39ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4514states) and FLOYD_HOARE automaton (currently 11 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 39ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4514states) and FLOYD_HOARE automaton (currently 11 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 39ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4514states) and FLOYD_HOARE automaton (currently 11 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 39ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 4 procedures, 148 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 849391.5ms, OverallIterations: 211, TraceHistogramMax: 1, EmptinessCheckTime: 1127.7ms, AutomataDifference: 725292.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 170.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61807 SDtfs, 209968 SDslu, 620361 SDs, 0 SdLazy, 276529 SolverSat, 13595 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124995.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10517 GetRequests, 638 SyntacticMatches, 218 SemanticMatches, 9660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54688 ImplicationChecksByTransitivity, 641486.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5107occurred in iteration=0, InterpolantAutomatonStates: 5966, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17214.5ms AutomataMinimizationTime, 210 MinimizatonAttempts, 855443 StatesRemovedByMinimization, 209 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 394.2ms SsaConstructionTime, 2607.3ms SatisfiabilityAnalysisTime, 100773.6ms InterpolantComputationTime, 19720 NumberOfCodeBlocks, 19720 NumberOfCodeBlocksAsserted, 211 NumberOfCheckSat, 19509 ConstructedInterpolants, 0 QuantifiedInterpolants, 305813 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 211 InterpolantComputations, 211 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown