/usr/bin/java -Xmx16000000000 -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-dev-770125f [2021-05-21 17:41:07,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:41:07,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:41:07,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:41:07,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:41:07,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:41:07,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:41:07,374 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 [2021-05-21 17:41:07,409 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:41:07,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:41:07,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:41:07,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:41:07,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:41:07,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:41:07,410 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:41:07,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:41:07,410 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:41:07,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:41:07,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:41:07,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:41:07,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:41:07,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:41:07,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:41:07,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:41:07,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:41:07,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:41:07,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:41:07,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:41:07,688 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:41:07,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-05-21 17:41:07,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1aaa021/6d5959a9071f48a99df680a6472aaa2e/FLAGabcd50748 [2021-05-21 17:41:08,208 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:41:08,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-05-21 17:41:08,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1aaa021/6d5959a9071f48a99df680a6472aaa2e/FLAGabcd50748 [2021-05-21 17:41:08,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1aaa021/6d5959a9071f48a99df680a6472aaa2e [2021-05-21 17:41:08,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:41:08,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:41:08,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:41:08,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:41:08,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:41:08,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:41:08" (1/1) ... [2021-05-21 17:41:08,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35231dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:08, skipping insertion in model container [2021-05-21 17:41:08,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:41:08" (1/1) ... [2021-05-21 17:41:08,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:41:08,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:41:08,682 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-05-21 17:41:09,001 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] [2021-05-21 17:41:09,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:41:09,025 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:41:09,035 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-05-21 17:41:09,053 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] [2021-05-21 17:41:09,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:41:09,218 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:41:09,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09 WrapperNode [2021-05-21 17:41:09,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:41:09,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:41:09,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:41:09,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:41:09,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:41:09,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:41:09,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:41:09,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:41:09,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (1/1) ... [2021-05-21 17:41:09,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:41:09,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:41:09,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:41:09,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:41:09,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (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 [2021-05-21 17:41:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:41:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:41:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:41:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-05-21 17:41:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:41:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:41:09,353 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:41:09,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:41:09,838 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-05-21 17:41:09,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:41:09 BoogieIcfgContainer [2021-05-21 17:41:09,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:41:09,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:41:09,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:41:09,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:41:09,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:41:08" (1/3) ... [2021-05-21 17:41:09,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571573c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:41:09, skipping insertion in model container [2021-05-21 17:41:09,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:41:09" (2/3) ... [2021-05-21 17:41:09,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571573c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:41:09, skipping insertion in model container [2021-05-21 17:41:09,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:41:09" (3/3) ... [2021-05-21 17:41:09,844 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-05-21 17:41:09,851 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:41:09,851 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:41:09,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-05-21 17:41:09,851 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:41:09,878 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,878 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,878 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,878 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,879 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,879 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,880 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,881 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,882 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,883 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,884 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,885 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,886 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,887 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,888 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,889 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,891 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,891 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,891 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,892 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,897 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,898 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,898 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,898 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,899 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,900 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,902 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,903 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,903 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:41:09,918 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-05-21 17:41:09,930 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-05-21 17:41:09,940 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:41:09,940 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:41:09,940 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:41:09,940 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:41:09,940 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:41:09,941 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:41:09,941 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:41:09,941 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:41:09,948 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 143 transitions, 308 flow [2021-05-21 17:41:10,064 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5115 states, 5106 states have (on average 2.781629455542499) internal successors, (14203), 5114 states have internal predecessors, (14203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 5115 states, 5106 states have (on average 2.781629455542499) internal successors, (14203), 5114 states have internal predecessors, (14203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 17:41:10,097 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:10,097 INFO L521 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] [2021-05-21 17:41:10,098 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]=== [2021-05-21 17:41:10,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:10,101 INFO L82 PathProgramCache]: Analyzing trace with hash 918719424, now seen corresponding path program 1 times [2021-05-21 17:41:10,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:10,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670987106] [2021-05-21 17:41:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:10,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:10,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670987106] [2021-05-21 17:41:10,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670987106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:10,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:10,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:41:10,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931580141] [2021-05-21 17:41:10,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:41:10,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:41:10,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:41:10,409 INFO L87 Difference]: Start difference. First operand has 5115 states, 5106 states have (on average 2.781629455542499) internal successors, (14203), 5114 states have internal predecessors, (14203), 0 states have call successors, (0), 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) [2021-05-21 17:41:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:10,721 INFO L93 Difference]: Finished difference Result 6844 states and 18653 transitions. [2021-05-21 17:41:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 17:41:10,722 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 [2021-05-21 17:41:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:10,757 INFO L225 Difference]: With dead ends: 6844 [2021-05-21 17:41:10,757 INFO L226 Difference]: Without dead ends: 5725 [2021-05-21 17:41:10,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:41:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-05-21 17:41:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 4445. [2021-05-21 17:41:10,889 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) [2021-05-21 17:41:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 12050 transitions. [2021-05-21 17:41:10,901 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 12050 transitions. Word has length 48 [2021-05-21 17:41:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:10,902 INFO L482 AbstractCegarLoop]: Abstraction has 4445 states and 12050 transitions. [2021-05-21 17:41:10,902 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) [2021-05-21 17:41:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 12050 transitions. [2021-05-21 17:41:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:41:10,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:10,904 INFO L521 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] [2021-05-21 17:41:10,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:41:10,904 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]=== [2021-05-21 17:41:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:10,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1316640901, now seen corresponding path program 1 times [2021-05-21 17:41:10,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:10,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014361504] [2021-05-21 17:41:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:11,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:11,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014361504] [2021-05-21 17:41:11,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014361504] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:11,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:11,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:41:11,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093779198] [2021-05-21 17:41:11,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:41:11,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:11,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:41:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:41:11,043 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) [2021-05-21 17:41:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:11,251 INFO L93 Difference]: Finished difference Result 6161 states and 16560 transitions. [2021-05-21 17:41:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:41:11,251 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 [2021-05-21 17:41:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:11,269 INFO L225 Difference]: With dead ends: 6161 [2021-05-21 17:41:11,269 INFO L226 Difference]: Without dead ends: 5231 [2021-05-21 17:41:11,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-21 17:41:11,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2021-05-21 17:41:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 5061. [2021-05-21 17:41:11,396 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) [2021-05-21 17:41:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 13738 transitions. [2021-05-21 17:41:11,408 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 13738 transitions. Word has length 54 [2021-05-21 17:41:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:11,408 INFO L482 AbstractCegarLoop]: Abstraction has 5061 states and 13738 transitions. [2021-05-21 17:41:11,409 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) [2021-05-21 17:41:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 13738 transitions. [2021-05-21 17:41:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-21 17:41:11,413 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:11,413 INFO L521 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] [2021-05-21 17:41:11,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:41:11,413 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]=== [2021-05-21 17:41:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 612799479, now seen corresponding path program 1 times [2021-05-21 17:41:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40629096] [2021-05-21 17:41:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:11,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:11,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40629096] [2021-05-21 17:41:11,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40629096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:11,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:11,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-21 17:41:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944496500] [2021-05-21 17:41:11,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-21 17:41:11,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-21 17:41:11,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-21 17:41:11,486 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) [2021-05-21 17:41:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:11,515 INFO L93 Difference]: Finished difference Result 1928 states and 5048 transitions. [2021-05-21 17:41:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-21 17:41:11,516 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 [2021-05-21 17:41:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:11,522 INFO L225 Difference]: With dead ends: 1928 [2021-05-21 17:41:11,522 INFO L226 Difference]: Without dead ends: 1928 [2021-05-21 17:41:11,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:41:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-05-21 17:41:11,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1928. [2021-05-21 17:41:11,551 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) [2021-05-21 17:41:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 5048 transitions. [2021-05-21 17:41:11,554 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 5048 transitions. Word has length 66 [2021-05-21 17:41:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:11,555 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 5048 transitions. [2021-05-21 17:41:11,556 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) [2021-05-21 17:41:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5048 transitions. [2021-05-21 17:41:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:11,560 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:11,560 INFO L521 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] [2021-05-21 17:41:11,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:41:11,560 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]=== [2021-05-21 17:41:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:11,561 INFO L82 PathProgramCache]: Analyzing trace with hash -240776193, now seen corresponding path program 1 times [2021-05-21 17:41:11,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:11,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442349440] [2021-05-21 17:41:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:12,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:12,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442349440] [2021-05-21 17:41:12,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442349440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:12,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:12,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-21 17:41:12,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646553135] [2021-05-21 17:41:12,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-21 17:41:12,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:12,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-21 17:41:12,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-05-21 17:41:12,446 INFO L87 Difference]: Start difference. First operand 1928 states and 5048 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:15,132 INFO L93 Difference]: Finished difference Result 2975 states and 7729 transitions. [2021-05-21 17:41:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 17:41:15,133 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-05-21 17:41:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:15,140 INFO L225 Difference]: With dead ends: 2975 [2021-05-21 17:41:15,141 INFO L226 Difference]: Without dead ends: 2945 [2021-05-21 17:41:15,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 2108.9ms TimeCoverageRelationStatistics Valid=791, Invalid=3115, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 17:41:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-05-21 17:41:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2870. [2021-05-21 17:41:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 2.6359832635983262) internal successors, (7560), 2869 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 7560 transitions. [2021-05-21 17:41:15,183 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 7560 transitions. Word has length 94 [2021-05-21 17:41:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:15,183 INFO L482 AbstractCegarLoop]: Abstraction has 2870 states and 7560 transitions. [2021-05-21 17:41:15,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 7560 transitions. [2021-05-21 17:41:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:15,187 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:15,187 INFO L521 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] [2021-05-21 17:41:15,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:41:15,187 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]=== [2021-05-21 17:41:15,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1458799697, now seen corresponding path program 1 times [2021-05-21 17:41:15,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:15,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274418096] [2021-05-21 17:41:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:15,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:15,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274418096] [2021-05-21 17:41:15,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274418096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:15,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:15,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:15,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129657535] [2021-05-21 17:41:15,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:15,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:15,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:15,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:15,599 INFO L87 Difference]: Start difference. First operand 2870 states and 7560 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) [2021-05-21 17:41:16,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:16,682 INFO L93 Difference]: Finished difference Result 4814 states and 12411 transitions. [2021-05-21 17:41:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:41:16,683 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 [2021-05-21 17:41:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:16,695 INFO L225 Difference]: With dead ends: 4814 [2021-05-21 17:41:16,695 INFO L226 Difference]: Without dead ends: 4814 [2021-05-21 17:41:16,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 925.2ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:41:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2021-05-21 17:41:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 3367. [2021-05-21 17:41:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3367 states, 3365 states have (on average 2.5895988112927193) internal successors, (8714), 3366 states have internal predecessors, (8714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 8714 transitions. [2021-05-21 17:41:16,749 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 8714 transitions. Word has length 94 [2021-05-21 17:41:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:16,749 INFO L482 AbstractCegarLoop]: Abstraction has 3367 states and 8714 transitions. [2021-05-21 17:41:16,749 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) [2021-05-21 17:41:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 8714 transitions. [2021-05-21 17:41:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:16,754 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:16,754 INFO L521 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] [2021-05-21 17:41:16,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:41:16,754 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]=== [2021-05-21 17:41:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash 608810679, now seen corresponding path program 2 times [2021-05-21 17:41:16,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:16,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349843951] [2021-05-21 17:41:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:17,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:17,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349843951] [2021-05-21 17:41:17,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349843951] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:17,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:17,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:17,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688828203] [2021-05-21 17:41:17,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:17,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:17,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:17,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:17,391 INFO L87 Difference]: Start difference. First operand 3367 states and 8714 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) [2021-05-21 17:41:18,321 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:41:18,619 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:41:18,765 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:41:18,940 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:41:19,144 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:41:19,350 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:41:19,512 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:41:19,721 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:41:20,317 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:41:20,519 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:41:20,743 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:41:20,916 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:41:21,119 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:41:21,535 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:41:21,837 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:41:22,152 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:41:22,443 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:41:22,638 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:41:22,956 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:41:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:23,070 INFO L93 Difference]: Finished difference Result 7161 states and 17974 transitions. [2021-05-21 17:41:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 17:41:23,070 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 [2021-05-21 17:41:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:23,078 INFO L225 Difference]: With dead ends: 7161 [2021-05-21 17:41:23,078 INFO L226 Difference]: Without dead ends: 7161 [2021-05-21 17:41:23,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5094.2ms TimeCoverageRelationStatistics Valid=1020, Invalid=2640, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 17:41:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2021-05-21 17:41:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 4645. [2021-05-21 17:41:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4645 states, 4643 states have (on average 2.626319190178764) internal successors, (12194), 4644 states have internal predecessors, (12194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 12194 transitions. [2021-05-21 17:41:23,150 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 12194 transitions. Word has length 94 [2021-05-21 17:41:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:23,151 INFO L482 AbstractCegarLoop]: Abstraction has 4645 states and 12194 transitions. [2021-05-21 17:41:23,151 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) [2021-05-21 17:41:23,151 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 12194 transitions. [2021-05-21 17:41:23,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:23,156 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:23,156 INFO L521 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] [2021-05-21 17:41:23,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:41:23,157 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]=== [2021-05-21 17:41:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:23,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1809812065, now seen corresponding path program 3 times [2021-05-21 17:41:23,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:23,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661025177] [2021-05-21 17:41:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:23,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:23,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661025177] [2021-05-21 17:41:23,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661025177] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:23,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:23,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688254897] [2021-05-21 17:41:23,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:23,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:23,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:23,764 INFO L87 Difference]: Start difference. First operand 4645 states and 12194 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) [2021-05-21 17:41:24,795 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-05-21 17:41:24,965 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:41:25,097 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:41:25,281 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:41:25,466 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:41:25,660 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:41:26,232 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:41:26,418 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:41:26,598 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:41:26,805 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:41:26,977 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:41:27,185 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:41:27,594 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:41:27,900 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:41:28,204 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:41:28,483 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:41:28,658 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:41:28,956 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:41:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:29,069 INFO L93 Difference]: Finished difference Result 7721 states and 19133 transitions. [2021-05-21 17:41:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 17:41:29,070 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 [2021-05-21 17:41:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:29,078 INFO L225 Difference]: With dead ends: 7721 [2021-05-21 17:41:29,078 INFO L226 Difference]: Without dead ends: 7721 [2021-05-21 17:41:29,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 4796.7ms TimeCoverageRelationStatistics Valid=968, Invalid=2572, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 17:41:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2021-05-21 17:41:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 4649. [2021-05-21 17:41:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4647 states have (on average 2.6262104583602324) internal successors, (12204), 4648 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12204 transitions. [2021-05-21 17:41:29,160 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12204 transitions. Word has length 94 [2021-05-21 17:41:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:29,160 INFO L482 AbstractCegarLoop]: Abstraction has 4649 states and 12204 transitions. [2021-05-21 17:41:29,160 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) [2021-05-21 17:41:29,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12204 transitions. [2021-05-21 17:41:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:29,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:29,166 INFO L521 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] [2021-05-21 17:41:29,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:41:29,166 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]=== [2021-05-21 17:41:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:29,167 INFO L82 PathProgramCache]: Analyzing trace with hash -184622153, now seen corresponding path program 4 times [2021-05-21 17:41:29,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:29,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213415266] [2021-05-21 17:41:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:29,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:29,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213415266] [2021-05-21 17:41:29,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213415266] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:29,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:29,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:29,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759074142] [2021-05-21 17:41:29,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:29,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:29,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:29,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:29,757 INFO L87 Difference]: Start difference. First operand 4649 states and 12204 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) [2021-05-21 17:41:30,514 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-05-21 17:41:30,945 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:41:31,074 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:41:31,240 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:41:31,621 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:41:31,875 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:41:32,011 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:41:32,186 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:41:32,367 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:41:32,555 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:41:32,726 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:41:32,932 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:41:33,302 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:41:33,578 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:41:33,861 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:41:34,126 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:41:34,285 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:41:34,567 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:41:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:34,680 INFO L93 Difference]: Finished difference Result 7883 states and 19505 transitions. [2021-05-21 17:41:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 17:41:34,680 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 [2021-05-21 17:41:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:34,688 INFO L225 Difference]: With dead ends: 7883 [2021-05-21 17:41:34,688 INFO L226 Difference]: Without dead ends: 7883 [2021-05-21 17:41:34,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 4455.3ms TimeCoverageRelationStatistics Valid=918, Invalid=2504, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 17:41:34,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2021-05-21 17:41:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 4657. [2021-05-21 17:41:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4655 states have (on average 2.6259935553168634) internal successors, (12224), 4656 states have internal predecessors, (12224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 12224 transitions. [2021-05-21 17:41:34,757 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 12224 transitions. Word has length 94 [2021-05-21 17:41:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:34,758 INFO L482 AbstractCegarLoop]: Abstraction has 4657 states and 12224 transitions. [2021-05-21 17:41:34,758 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) [2021-05-21 17:41:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 12224 transitions. [2021-05-21 17:41:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:34,764 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:34,764 INFO L521 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] [2021-05-21 17:41:34,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 17:41:34,764 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]=== [2021-05-21 17:41:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1732609481, now seen corresponding path program 5 times [2021-05-21 17:41:34,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:34,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772257822] [2021-05-21 17:41:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:35,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:35,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772257822] [2021-05-21 17:41:35,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772257822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:35,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:35,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:35,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935336389] [2021-05-21 17:41:35,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:35,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:35,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:35,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:35,336 INFO L87 Difference]: Start difference. First operand 4657 states and 12224 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) [2021-05-21 17:41:36,499 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:41:36,847 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:41:36,979 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:41:37,224 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:41:37,379 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:41:37,562 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:41:37,741 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:41:37,931 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:41:38,098 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:41:38,318 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:41:38,651 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:41:38,896 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:41:39,154 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:41:39,395 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:41:39,552 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:41:39,805 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:41:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:39,916 INFO L93 Difference]: Finished difference Result 8045 states and 19877 transitions. [2021-05-21 17:41:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 17:41:39,917 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 [2021-05-21 17:41:39,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:39,924 INFO L225 Difference]: With dead ends: 8045 [2021-05-21 17:41:39,924 INFO L226 Difference]: Without dead ends: 8045 [2021-05-21 17:41:39,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 4209.0ms TimeCoverageRelationStatistics Valid=870, Invalid=2436, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 17:41:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-05-21 17:41:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 4661. [2021-05-21 17:41:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4659 states have (on average 2.625885383129427) internal successors, (12234), 4660 states have internal predecessors, (12234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 12234 transitions. [2021-05-21 17:41:39,990 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 12234 transitions. Word has length 94 [2021-05-21 17:41:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:39,991 INFO L482 AbstractCegarLoop]: Abstraction has 4661 states and 12234 transitions. [2021-05-21 17:41:39,991 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) [2021-05-21 17:41:39,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 12234 transitions. [2021-05-21 17:41:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:39,996 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:39,996 INFO L521 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] [2021-05-21 17:41:39,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 17:41:39,997 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]=== [2021-05-21 17:41:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:39,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1417459553, now seen corresponding path program 6 times [2021-05-21 17:41:39,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:39,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986601361] [2021-05-21 17:41:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:40,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:40,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986601361] [2021-05-21 17:41:40,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986601361] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:40,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:40,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:40,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969568234] [2021-05-21 17:41:40,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:40,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:40,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:40,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:40,596 INFO L87 Difference]: Start difference. First operand 4661 states and 12234 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) [2021-05-21 17:41:42,005 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:41:42,132 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:41:42,389 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:41:42,526 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:41:42,703 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:41:42,888 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:41:43,079 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:41:43,246 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:41:43,473 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:41:44,026 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:41:44,147 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-05-21 17:41:44,279 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:41:44,656 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:41:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:45,004 INFO L93 Difference]: Finished difference Result 7507 states and 18726 transitions. [2021-05-21 17:41:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 17:41:45,004 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 [2021-05-21 17:41:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:45,010 INFO L225 Difference]: With dead ends: 7507 [2021-05-21 17:41:45,010 INFO L226 Difference]: Without dead ends: 7507 [2021-05-21 17:41:45,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 4014.4ms TimeCoverageRelationStatistics Valid=824, Invalid=2368, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 17:41:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7507 states. [2021-05-21 17:41:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7507 to 4649. [2021-05-21 17:41:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4647 states have (on average 2.6262104583602324) internal successors, (12204), 4648 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12204 transitions. [2021-05-21 17:41:45,070 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12204 transitions. Word has length 94 [2021-05-21 17:41:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:45,070 INFO L482 AbstractCegarLoop]: Abstraction has 4649 states and 12204 transitions. [2021-05-21 17:41:45,070 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) [2021-05-21 17:41:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12204 transitions. [2021-05-21 17:41:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:45,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:45,075 INFO L521 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] [2021-05-21 17:41:45,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 17:41:45,075 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]=== [2021-05-21 17:41:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:45,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1712244349, now seen corresponding path program 7 times [2021-05-21 17:41:45,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:45,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664914130] [2021-05-21 17:41:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:45,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:45,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664914130] [2021-05-21 17:41:45,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664914130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:45,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:45,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:45,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614653020] [2021-05-21 17:41:45,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:45,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:45,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:45,351 INFO L87 Difference]: Start difference. First operand 4649 states and 12204 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) [2021-05-21 17:41:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:46,217 INFO L93 Difference]: Finished difference Result 5994 states and 15241 transitions. [2021-05-21 17:41:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-21 17:41:46,217 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 [2021-05-21 17:41:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:46,222 INFO L225 Difference]: With dead ends: 5994 [2021-05-21 17:41:46,223 INFO L226 Difference]: Without dead ends: 5994 [2021-05-21 17:41:46,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 802.0ms TimeCoverageRelationStatistics Valid=311, Invalid=745, Unknown=0, NotChecked=0, Total=1056 [2021-05-21 17:41:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-05-21 17:41:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 4649. [2021-05-21 17:41:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4647 states have (on average 2.6262104583602324) internal successors, (12204), 4648 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12204 transitions. [2021-05-21 17:41:46,281 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12204 transitions. Word has length 94 [2021-05-21 17:41:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:46,282 INFO L482 AbstractCegarLoop]: Abstraction has 4649 states and 12204 transitions. [2021-05-21 17:41:46,282 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) [2021-05-21 17:41:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12204 transitions. [2021-05-21 17:41:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:46,287 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:46,287 INFO L521 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] [2021-05-21 17:41:46,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 17:41:46,287 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]=== [2021-05-21 17:41:46,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:46,287 INFO L82 PathProgramCache]: Analyzing trace with hash -186806265, now seen corresponding path program 8 times [2021-05-21 17:41:46,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:46,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7972267] [2021-05-21 17:41:46,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:46,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:46,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7972267] [2021-05-21 17:41:46,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7972267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:46,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:46,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:46,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758796851] [2021-05-21 17:41:46,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:46,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:46,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:46,595 INFO L87 Difference]: Start difference. First operand 4649 states and 12204 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) [2021-05-21 17:41:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:47,565 INFO L93 Difference]: Finished difference Result 5932 states and 14931 transitions. [2021-05-21 17:41:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:41:47,566 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 [2021-05-21 17:41:47,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:47,570 INFO L225 Difference]: With dead ends: 5932 [2021-05-21 17:41:47,570 INFO L226 Difference]: Without dead ends: 5932 [2021-05-21 17:41:47,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 899.6ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:41:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2021-05-21 17:41:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 4599. [2021-05-21 17:41:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4597 states have (on average 2.6249728083532737) internal successors, (12067), 4598 states have internal predecessors, (12067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 12067 transitions. [2021-05-21 17:41:47,629 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 12067 transitions. Word has length 94 [2021-05-21 17:41:47,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:47,629 INFO L482 AbstractCegarLoop]: Abstraction has 4599 states and 12067 transitions. [2021-05-21 17:41:47,630 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) [2021-05-21 17:41:47,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 12067 transitions. [2021-05-21 17:41:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:47,634 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:47,634 INFO L521 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] [2021-05-21 17:41:47,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 17:41:47,634 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]=== [2021-05-21 17:41:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -938424673, now seen corresponding path program 9 times [2021-05-21 17:41:47,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:47,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027388311] [2021-05-21 17:41:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:47,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:47,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027388311] [2021-05-21 17:41:47,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027388311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:47,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:47,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:47,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184042704] [2021-05-21 17:41:47,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:47,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:47,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:47,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:47,927 INFO L87 Difference]: Start difference. First operand 4599 states and 12067 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) [2021-05-21 17:41:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:48,948 INFO L93 Difference]: Finished difference Result 5870 states and 14664 transitions. [2021-05-21 17:41:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:41:48,948 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 [2021-05-21 17:41:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:48,953 INFO L225 Difference]: With dead ends: 5870 [2021-05-21 17:41:48,953 INFO L226 Difference]: Without dead ends: 5870 [2021-05-21 17:41:48,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 907.4ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:41:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2021-05-21 17:41:48,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 4549. [2021-05-21 17:41:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4547 states have (on average 2.6237079393006377) internal successors, (11930), 4548 states have internal predecessors, (11930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 11930 transitions. [2021-05-21 17:41:49,008 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 11930 transitions. Word has length 94 [2021-05-21 17:41:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:49,008 INFO L482 AbstractCegarLoop]: Abstraction has 4549 states and 11930 transitions. [2021-05-21 17:41:49,009 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) [2021-05-21 17:41:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 11930 transitions. [2021-05-21 17:41:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:49,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:49,014 INFO L521 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] [2021-05-21 17:41:49,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 17:41:49,014 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]=== [2021-05-21 17:41:49,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:49,014 INFO L82 PathProgramCache]: Analyzing trace with hash -356783737, now seen corresponding path program 10 times [2021-05-21 17:41:49,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:49,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030750172] [2021-05-21 17:41:49,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:49,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:49,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030750172] [2021-05-21 17:41:49,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030750172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:49,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:49,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:49,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209605589] [2021-05-21 17:41:49,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:49,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:49,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:49,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:49,315 INFO L87 Difference]: Start difference. First operand 4549 states and 11930 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) [2021-05-21 17:41:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:50,211 INFO L93 Difference]: Finished difference Result 5985 states and 14912 transitions. [2021-05-21 17:41:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:41:50,211 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 [2021-05-21 17:41:50,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:50,216 INFO L225 Difference]: With dead ends: 5985 [2021-05-21 17:41:50,216 INFO L226 Difference]: Without dead ends: 5985 [2021-05-21 17:41:50,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 851.1ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:41:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5985 states. [2021-05-21 17:41:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5985 to 4449. [2021-05-21 17:41:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4447 states have (on average 2.621092871598831) internal successors, (11656), 4448 states have internal predecessors, (11656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 11656 transitions. [2021-05-21 17:41:50,278 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 11656 transitions. Word has length 94 [2021-05-21 17:41:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:50,278 INFO L482 AbstractCegarLoop]: Abstraction has 4449 states and 11656 transitions. [2021-05-21 17:41:50,278 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) [2021-05-21 17:41:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 11656 transitions. [2021-05-21 17:41:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:50,284 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:50,284 INFO L521 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] [2021-05-21 17:41:50,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 17:41:50,284 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]=== [2021-05-21 17:41:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:50,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1061403897, now seen corresponding path program 11 times [2021-05-21 17:41:50,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:50,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336426614] [2021-05-21 17:41:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:50,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:50,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336426614] [2021-05-21 17:41:50,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336426614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:50,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:50,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:50,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631612182] [2021-05-21 17:41:50,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:50,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:50,613 INFO L87 Difference]: Start difference. First operand 4449 states and 11656 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) [2021-05-21 17:41:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:51,486 INFO L93 Difference]: Finished difference Result 6011 states and 14931 transitions. [2021-05-21 17:41:51,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:41:51,486 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 [2021-05-21 17:41:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:51,491 INFO L225 Difference]: With dead ends: 6011 [2021-05-21 17:41:51,491 INFO L226 Difference]: Without dead ends: 6011 [2021-05-21 17:41:51,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 790.3ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:41:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-05-21 17:41:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4399. [2021-05-21 17:41:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4397 states have (on average 2.619740732317489) internal successors, (11519), 4398 states have internal predecessors, (11519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 11519 transitions. [2021-05-21 17:41:51,542 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 11519 transitions. Word has length 94 [2021-05-21 17:41:51,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:51,542 INFO L482 AbstractCegarLoop]: Abstraction has 4399 states and 11519 transitions. [2021-05-21 17:41:51,543 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) [2021-05-21 17:41:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 11519 transitions. [2021-05-21 17:41:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:51,547 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:51,547 INFO L521 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] [2021-05-21 17:41:51,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 17:41:51,548 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]=== [2021-05-21 17:41:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1559630751, now seen corresponding path program 12 times [2021-05-21 17:41:51,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:51,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099683761] [2021-05-21 17:41:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:51,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:51,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099683761] [2021-05-21 17:41:51,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099683761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:51,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:51,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:41:51,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377005262] [2021-05-21 17:41:51,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:41:51,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:51,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:41:51,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:41:51,839 INFO L87 Difference]: Start difference. First operand 4399 states and 11519 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) [2021-05-21 17:41:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:52,660 INFO L93 Difference]: Finished difference Result 5201 states and 13159 transitions. [2021-05-21 17:41:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-21 17:41:52,660 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 [2021-05-21 17:41:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:52,665 INFO L225 Difference]: With dead ends: 5201 [2021-05-21 17:41:52,665 INFO L226 Difference]: Without dead ends: 5201 [2021-05-21 17:41:52,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 739.3ms TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:41:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2021-05-21 17:41:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 4109. [2021-05-21 17:41:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4107 states have (on average 2.634526418310202) internal successors, (10820), 4108 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 10820 transitions. [2021-05-21 17:41:52,707 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 10820 transitions. Word has length 94 [2021-05-21 17:41:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:52,708 INFO L482 AbstractCegarLoop]: Abstraction has 4109 states and 10820 transitions. [2021-05-21 17:41:52,708 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) [2021-05-21 17:41:52,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 10820 transitions. [2021-05-21 17:41:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:52,712 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:52,712 INFO L521 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] [2021-05-21 17:41:52,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 17:41:52,712 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]=== [2021-05-21 17:41:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:52,713 INFO L82 PathProgramCache]: Analyzing trace with hash 891391129, now seen corresponding path program 13 times [2021-05-21 17:41:52,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:52,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120369363] [2021-05-21 17:41:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:53,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:53,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120369363] [2021-05-21 17:41:53,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120369363] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:53,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:53,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:53,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780511987] [2021-05-21 17:41:53,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:53,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:53,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:53,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:53,276 INFO L87 Difference]: Start difference. First operand 4109 states and 10820 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) [2021-05-21 17:41:54,403 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-05-21 17:41:54,529 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:41:54,695 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:41:54,871 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:41:55,075 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:41:55,233 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:41:55,443 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:41:55,974 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:41:56,153 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:41:56,370 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:41:56,571 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2021-05-21 17:41:56,971 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-05-21 17:41:57,271 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-05-21 17:41:57,578 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-05-21 17:41:57,892 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2021-05-21 17:41:58,208 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:41:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:41:58,315 INFO L93 Difference]: Finished difference Result 6860 states and 17295 transitions. [2021-05-21 17:41:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 17:41:58,316 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 [2021-05-21 17:41:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:41:58,320 INFO L225 Difference]: With dead ends: 6860 [2021-05-21 17:41:58,320 INFO L226 Difference]: Without dead ends: 6860 [2021-05-21 17:41:58,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 4613.9ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 17:41:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2021-05-21 17:41:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 3953. [2021-05-21 17:41:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3951 states have (on average 2.6504682358896483) internal successors, (10472), 3952 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:41:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10472 transitions. [2021-05-21 17:41:58,364 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10472 transitions. Word has length 94 [2021-05-21 17:41:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:41:58,364 INFO L482 AbstractCegarLoop]: Abstraction has 3953 states and 10472 transitions. [2021-05-21 17:41:58,364 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) [2021-05-21 17:41:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10472 transitions. [2021-05-21 17:41:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:41:58,368 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:41:58,368 INFO L521 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] [2021-05-21 17:41:58,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 17:41:58,368 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]=== [2021-05-21 17:41:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:41:58,368 INFO L82 PathProgramCache]: Analyzing trace with hash 814259131, now seen corresponding path program 14 times [2021-05-21 17:41:58,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:41:58,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834848648] [2021-05-21 17:41:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:41:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:41:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:41:58,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:41:58,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834848648] [2021-05-21 17:41:58,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834848648] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:41:58,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:41:58,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:41:58,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4547356] [2021-05-21 17:41:58,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:41:58,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:41:58,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:41:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:41:58,973 INFO L87 Difference]: Start difference. First operand 3953 states and 10472 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) [2021-05-21 17:42:00,109 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-05-21 17:42:00,234 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:00,398 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:42:00,568 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:42:00,774 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:42:00,929 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:42:01,130 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:42:01,664 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:42:01,838 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:02,057 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:42:02,222 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:02,429 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:42:02,814 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:42:03,112 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:42:03,415 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-05-21 17:42:03,724 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:42:04,022 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:42:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:04,130 INFO L93 Difference]: Finished difference Result 6289 states and 15802 transitions. [2021-05-21 17:42:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 17:42:04,131 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 [2021-05-21 17:42:04,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:04,135 INFO L225 Difference]: With dead ends: 6289 [2021-05-21 17:42:04,135 INFO L226 Difference]: Without dead ends: 6289 [2021-05-21 17:42:04,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 4768.1ms TimeCoverageRelationStatistics Valid=994, Invalid=2546, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 17:42:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2021-05-21 17:42:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 3905. [2021-05-21 17:42:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3903 states have (on average 2.646169613118114) internal successors, (10328), 3904 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 10328 transitions. [2021-05-21 17:42:04,176 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 10328 transitions. Word has length 94 [2021-05-21 17:42:04,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:04,176 INFO L482 AbstractCegarLoop]: Abstraction has 3905 states and 10328 transitions. [2021-05-21 17:42:04,176 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) [2021-05-21 17:42:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 10328 transitions. [2021-05-21 17:42:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:04,179 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:04,180 INFO L521 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] [2021-05-21 17:42:04,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 17:42:04,180 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]=== [2021-05-21 17:42:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:04,180 INFO L82 PathProgramCache]: Analyzing trace with hash -985219549, now seen corresponding path program 15 times [2021-05-21 17:42:04,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:04,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994595877] [2021-05-21 17:42:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:04,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:04,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994595877] [2021-05-21 17:42:04,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994595877] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:04,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:04,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:04,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474542464] [2021-05-21 17:42:04,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:04,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:04,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:04,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:04,753 INFO L87 Difference]: Start difference. First operand 3905 states and 10328 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) [2021-05-21 17:42:05,604 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-05-21 17:42:05,728 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:42:05,875 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-05-21 17:42:06,022 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:06,198 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:42:06,383 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:42:06,575 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:42:07,122 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:42:07,297 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:07,485 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:42:07,681 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:42:07,848 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:08,065 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-05-21 17:42:08,442 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-05-21 17:42:08,714 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:42:09,007 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:42:09,271 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:42:09,459 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-05-21 17:42:09,734 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:09,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:09,842 INFO L93 Difference]: Finished difference Result 7394 states and 18416 transitions. [2021-05-21 17:42:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 17:42:09,842 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 [2021-05-21 17:42:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:09,846 INFO L225 Difference]: With dead ends: 7394 [2021-05-21 17:42:09,846 INFO L226 Difference]: Without dead ends: 7394 [2021-05-21 17:42:09,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 4640.6ms TimeCoverageRelationStatistics Valid=975, Invalid=2565, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 17:42:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7394 states. [2021-05-21 17:42:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7394 to 3857. [2021-05-21 17:42:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3855 states have (on average 2.641763942931258) internal successors, (10184), 3856 states have internal predecessors, (10184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:09,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 10184 transitions. [2021-05-21 17:42:09,899 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 10184 transitions. Word has length 94 [2021-05-21 17:42:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:09,899 INFO L482 AbstractCegarLoop]: Abstraction has 3857 states and 10184 transitions. [2021-05-21 17:42:09,899 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) [2021-05-21 17:42:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 10184 transitions. [2021-05-21 17:42:09,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:09,902 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:09,902 INFO L521 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] [2021-05-21 17:42:09,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 17:42:09,902 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]=== [2021-05-21 17:42:09,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:09,903 INFO L82 PathProgramCache]: Analyzing trace with hash 781832763, now seen corresponding path program 16 times [2021-05-21 17:42:09,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:09,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902111578] [2021-05-21 17:42:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:10,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:10,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902111578] [2021-05-21 17:42:10,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902111578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:10,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:10,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:10,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969813311] [2021-05-21 17:42:10,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:10,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:10,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:10,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:10,470 INFO L87 Difference]: Start difference. First operand 3857 states and 10184 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) [2021-05-21 17:42:11,573 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-05-21 17:42:11,701 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:11,877 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:42:12,474 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:42:12,609 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:42:12,785 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:12,977 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:42:13,173 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:42:13,340 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:13,571 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-05-21 17:42:13,936 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-05-21 17:42:14,197 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:42:14,466 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:42:14,728 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:42:14,882 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:42:15,156 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:15,263 INFO L93 Difference]: Finished difference Result 7506 states and 18674 transitions. [2021-05-21 17:42:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 17:42:15,264 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 [2021-05-21 17:42:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:15,268 INFO L225 Difference]: With dead ends: 7506 [2021-05-21 17:42:15,268 INFO L226 Difference]: Without dead ends: 7506 [2021-05-21 17:42:15,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 4358.4ms TimeCoverageRelationStatistics Valid=925, Invalid=2497, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 17:42:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2021-05-21 17:42:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 3761. [2021-05-21 17:42:15,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3759 states have (on average 2.632615057196063) internal successors, (9896), 3760 states have internal predecessors, (9896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 9896 transitions. [2021-05-21 17:42:15,315 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 9896 transitions. Word has length 94 [2021-05-21 17:42:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:15,315 INFO L482 AbstractCegarLoop]: Abstraction has 3761 states and 9896 transitions. [2021-05-21 17:42:15,315 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) [2021-05-21 17:42:15,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 9896 transitions. [2021-05-21 17:42:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:15,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:15,318 INFO L521 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] [2021-05-21 17:42:15,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 17:42:15,318 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]=== [2021-05-21 17:42:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:15,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1052178245, now seen corresponding path program 17 times [2021-05-21 17:42:15,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:15,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718309858] [2021-05-21 17:42:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:15,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:15,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718309858] [2021-05-21 17:42:15,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718309858] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:15,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:15,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:15,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025173] [2021-05-21 17:42:15,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:15,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:15,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:15,860 INFO L87 Difference]: Start difference. First operand 3761 states and 9896 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) [2021-05-21 17:42:16,990 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:17,344 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-05-21 17:42:17,702 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:42:17,836 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:42:18,026 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:18,204 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:42:18,403 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:42:18,569 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:18,781 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-05-21 17:42:19,122 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:42:19,360 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:42:19,620 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:42:19,854 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-05-21 17:42:19,991 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-05-21 17:42:20,233 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:42:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:20,341 INFO L93 Difference]: Finished difference Result 7643 states and 18989 transitions. [2021-05-21 17:42:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 17:42:20,341 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 [2021-05-21 17:42:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:20,346 INFO L225 Difference]: With dead ends: 7643 [2021-05-21 17:42:20,346 INFO L226 Difference]: Without dead ends: 7643 [2021-05-21 17:42:20,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4064.0ms TimeCoverageRelationStatistics Valid=877, Invalid=2429, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 17:42:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2021-05-21 17:42:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 3713. [2021-05-21 17:42:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3711 states have (on average 2.6278631096739424) internal successors, (9752), 3712 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 9752 transitions. [2021-05-21 17:42:20,392 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 9752 transitions. Word has length 94 [2021-05-21 17:42:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:20,392 INFO L482 AbstractCegarLoop]: Abstraction has 3713 states and 9752 transitions. [2021-05-21 17:42:20,392 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) [2021-05-21 17:42:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 9752 transitions. [2021-05-21 17:42:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:20,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:20,395 INFO L521 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] [2021-05-21 17:42:20,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 17:42:20,395 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]=== [2021-05-21 17:42:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash -314420957, now seen corresponding path program 18 times [2021-05-21 17:42:20,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:20,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680089689] [2021-05-21 17:42:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:20,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:20,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680089689] [2021-05-21 17:42:20,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680089689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:20,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:20,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:20,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285614865] [2021-05-21 17:42:20,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:20,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:20,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:20,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:20,973 INFO L87 Difference]: Start difference. First operand 3713 states and 9752 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) [2021-05-21 17:42:22,239 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-05-21 17:42:22,618 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:42:22,754 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:42:22,927 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:23,101 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:42:23,296 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:42:23,459 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:23,671 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-05-21 17:42:24,221 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:42:24,456 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:42:24,802 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:42:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:25,140 INFO L93 Difference]: Finished difference Result 6978 states and 17564 transitions. [2021-05-21 17:42:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 17:42:25,140 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 [2021-05-21 17:42:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:25,144 INFO L225 Difference]: With dead ends: 6978 [2021-05-21 17:42:25,144 INFO L226 Difference]: Without dead ends: 6978 [2021-05-21 17:42:25,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 3871.2ms TimeCoverageRelationStatistics Valid=831, Invalid=2361, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 17:42:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2021-05-21 17:42:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 3587. [2021-05-21 17:42:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 3585 states have (on average 2.6304044630404464) internal successors, (9430), 3586 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 9430 transitions. [2021-05-21 17:42:25,188 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 9430 transitions. Word has length 94 [2021-05-21 17:42:25,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:25,188 INFO L482 AbstractCegarLoop]: Abstraction has 3587 states and 9430 transitions. [2021-05-21 17:42:25,188 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) [2021-05-21 17:42:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 9430 transitions. [2021-05-21 17:42:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:25,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:25,191 INFO L521 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] [2021-05-21 17:42:25,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 17:42:25,191 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]=== [2021-05-21 17:42:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash 689241785, now seen corresponding path program 2 times [2021-05-21 17:42:25,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:25,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266043372] [2021-05-21 17:42:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:25,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:25,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266043372] [2021-05-21 17:42:25,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266043372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:25,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:25,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-21 17:42:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547414864] [2021-05-21 17:42:25,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-21 17:42:25,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:25,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-21 17:42:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-05-21 17:42:25,719 INFO L87 Difference]: Start difference. First operand 3587 states and 9430 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:29,083 INFO L93 Difference]: Finished difference Result 6087 states and 15808 transitions. [2021-05-21 17:42:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 17:42:29,083 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-05-21 17:42:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:29,089 INFO L225 Difference]: With dead ends: 6087 [2021-05-21 17:42:29,089 INFO L226 Difference]: Without dead ends: 6014 [2021-05-21 17:42:29,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2402.8ms TimeCoverageRelationStatistics Valid=1048, Invalid=4064, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 17:42:29,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2021-05-21 17:42:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 4435. [2021-05-21 17:42:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4435 states, 4433 states have (on average 2.656665914730431) internal successors, (11777), 4434 states have internal predecessors, (11777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 11777 transitions. [2021-05-21 17:42:29,142 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 11777 transitions. Word has length 94 [2021-05-21 17:42:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:29,142 INFO L482 AbstractCegarLoop]: Abstraction has 4435 states and 11777 transitions. [2021-05-21 17:42:29,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 11777 transitions. [2021-05-21 17:42:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:29,145 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:29,145 INFO L521 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] [2021-05-21 17:42:29,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 17:42:29,145 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]=== [2021-05-21 17:42:29,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:29,146 INFO L82 PathProgramCache]: Analyzing trace with hash -76295461, now seen corresponding path program 19 times [2021-05-21 17:42:29,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:29,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229040776] [2021-05-21 17:42:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:29,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:29,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229040776] [2021-05-21 17:42:29,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229040776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:29,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:29,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:42:29,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302989468] [2021-05-21 17:42:29,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:42:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:42:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:42:29,415 INFO L87 Difference]: Start difference. First operand 4435 states and 11777 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) [2021-05-21 17:42:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:30,407 INFO L93 Difference]: Finished difference Result 5233 states and 13352 transitions. [2021-05-21 17:42:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:42:30,407 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 [2021-05-21 17:42:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:30,413 INFO L225 Difference]: With dead ends: 5233 [2021-05-21 17:42:30,413 INFO L226 Difference]: Without dead ends: 5233 [2021-05-21 17:42:30,414 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 881.2ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:42:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2021-05-21 17:42:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 4456. [2021-05-21 17:42:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4454 states have (on average 2.6553659631791646) internal successors, (11827), 4455 states have internal predecessors, (11827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 11827 transitions. [2021-05-21 17:42:30,474 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 11827 transitions. Word has length 94 [2021-05-21 17:42:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:30,474 INFO L482 AbstractCegarLoop]: Abstraction has 4456 states and 11827 transitions. [2021-05-21 17:42:30,474 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) [2021-05-21 17:42:30,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 11827 transitions. [2021-05-21 17:42:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:30,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:30,478 INFO L521 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] [2021-05-21 17:42:30,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 17:42:30,478 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]=== [2021-05-21 17:42:30,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:30,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1290428557, now seen corresponding path program 20 times [2021-05-21 17:42:30,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:30,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728398608] [2021-05-21 17:42:30,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:30,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:30,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728398608] [2021-05-21 17:42:30,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728398608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:30,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:30,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:30,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88352898] [2021-05-21 17:42:30,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:30,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:30,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:30,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:30,928 INFO L87 Difference]: Start difference. First operand 4456 states and 11827 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) [2021-05-21 17:42:31,858 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:42:32,031 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:42:32,351 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:42:32,532 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:42:32,722 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:42:32,973 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:33,152 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:42:33,320 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:42:33,496 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:42:33,660 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:42:33,831 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:42:34,001 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:42:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:34,009 INFO L93 Difference]: Finished difference Result 6769 states and 17319 transitions. [2021-05-21 17:42:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:42:34,010 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 [2021-05-21 17:42:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:34,016 INFO L225 Difference]: With dead ends: 6769 [2021-05-21 17:42:34,016 INFO L226 Difference]: Without dead ends: 6769 [2021-05-21 17:42:34,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2860.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:42:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2021-05-21 17:42:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 4564. [2021-05-21 17:42:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4562 states have (on average 2.662209557211749) internal successors, (12145), 4563 states have internal predecessors, (12145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 12145 transitions. [2021-05-21 17:42:34,070 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 12145 transitions. Word has length 94 [2021-05-21 17:42:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:34,070 INFO L482 AbstractCegarLoop]: Abstraction has 4564 states and 12145 transitions. [2021-05-21 17:42:34,071 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) [2021-05-21 17:42:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 12145 transitions. [2021-05-21 17:42:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:34,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:34,074 INFO L521 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] [2021-05-21 17:42:34,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 17:42:34,074 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]=== [2021-05-21 17:42:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash -223903799, now seen corresponding path program 3 times [2021-05-21 17:42:34,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:34,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589834084] [2021-05-21 17:42:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:34,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:34,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589834084] [2021-05-21 17:42:34,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589834084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:34,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:34,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-21 17:42:34,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692184948] [2021-05-21 17:42:34,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-21 17:42:34,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:34,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-21 17:42:34,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-05-21 17:42:34,586 INFO L87 Difference]: Start difference. First operand 4564 states and 12145 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:37,815 INFO L93 Difference]: Finished difference Result 6578 states and 17122 transitions. [2021-05-21 17:42:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 17:42:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-05-21 17:42:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:37,827 INFO L225 Difference]: With dead ends: 6578 [2021-05-21 17:42:37,827 INFO L226 Difference]: Without dead ends: 6524 [2021-05-21 17:42:37,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 2091.5ms TimeCoverageRelationStatistics Valid=827, Invalid=3333, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 17:42:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2021-05-21 17:42:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4924. [2021-05-21 17:42:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 4922 states have (on average 2.6625355546525804) internal successors, (13105), 4923 states have internal predecessors, (13105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 13105 transitions. [2021-05-21 17:42:37,883 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 13105 transitions. Word has length 94 [2021-05-21 17:42:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:37,884 INFO L482 AbstractCegarLoop]: Abstraction has 4924 states and 13105 transitions. [2021-05-21 17:42:37,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:37,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 13105 transitions. [2021-05-21 17:42:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:37,888 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:37,888 INFO L521 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] [2021-05-21 17:42:37,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 17:42:37,888 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]=== [2021-05-21 17:42:37,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:37,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1000323179, now seen corresponding path program 21 times [2021-05-21 17:42:37,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:37,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394152509] [2021-05-21 17:42:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:38,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:38,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394152509] [2021-05-21 17:42:38,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394152509] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:38,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:38,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:38,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814519466] [2021-05-21 17:42:38,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:38,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:38,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:38,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:38,388 INFO L87 Difference]: Start difference. First operand 4924 states and 13105 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) [2021-05-21 17:42:39,360 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:42:39,525 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:42:39,725 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:42:39,931 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:42:40,281 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:42:40,479 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:42:40,780 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:42:40,969 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:42:41,166 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:42:41,357 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:42:41,548 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:42:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:41,555 INFO L93 Difference]: Finished difference Result 8125 states and 20883 transitions. [2021-05-21 17:42:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:42:41,555 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 [2021-05-21 17:42:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:41,561 INFO L225 Difference]: With dead ends: 8125 [2021-05-21 17:42:41,561 INFO L226 Difference]: Without dead ends: 8125 [2021-05-21 17:42:41,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2873.6ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:42:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8125 states. [2021-05-21 17:42:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8125 to 4564. [2021-05-21 17:42:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4562 states have (on average 2.662209557211749) internal successors, (12145), 4563 states have internal predecessors, (12145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 12145 transitions. [2021-05-21 17:42:41,617 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 12145 transitions. Word has length 94 [2021-05-21 17:42:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:41,618 INFO L482 AbstractCegarLoop]: Abstraction has 4564 states and 12145 transitions. [2021-05-21 17:42:41,618 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) [2021-05-21 17:42:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 12145 transitions. [2021-05-21 17:42:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:41,621 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:41,621 INFO L521 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] [2021-05-21 17:42:41,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 17:42:41,621 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]=== [2021-05-21 17:42:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:41,621 INFO L82 PathProgramCache]: Analyzing trace with hash -672432475, now seen corresponding path program 22 times [2021-05-21 17:42:41,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:41,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934391022] [2021-05-21 17:42:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:42,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:42,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934391022] [2021-05-21 17:42:42,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934391022] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:42,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:42,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:42,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122226265] [2021-05-21 17:42:42,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:42,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:42,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:42,109 INFO L87 Difference]: Start difference. First operand 4564 states and 12145 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) [2021-05-21 17:42:43,081 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:42:43,419 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:43,578 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:42:43,775 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:42:43,977 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:42:44,247 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:42:44,421 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:42:44,576 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:42:44,738 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:42:44,876 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:45,048 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:42:45,207 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:42:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:45,215 INFO L93 Difference]: Finished difference Result 7289 states and 18432 transitions. [2021-05-21 17:42:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:42:45,215 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 [2021-05-21 17:42:45,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:45,220 INFO L225 Difference]: With dead ends: 7289 [2021-05-21 17:42:45,220 INFO L226 Difference]: Without dead ends: 7289 [2021-05-21 17:42:45,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2808.6ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:42:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7289 states. [2021-05-21 17:42:45,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7289 to 4568. [2021-05-21 17:42:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.662067455102935) internal successors, (12155), 4567 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12155 transitions. [2021-05-21 17:42:45,272 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12155 transitions. Word has length 94 [2021-05-21 17:42:45,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:45,272 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12155 transitions. [2021-05-21 17:42:45,272 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) [2021-05-21 17:42:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12155 transitions. [2021-05-21 17:42:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:45,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:45,276 INFO L521 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] [2021-05-21 17:42:45,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 17:42:45,276 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]=== [2021-05-21 17:42:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1096103279, now seen corresponding path program 23 times [2021-05-21 17:42:45,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:45,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788287051] [2021-05-21 17:42:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:45,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:45,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788287051] [2021-05-21 17:42:45,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788287051] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:45,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:45,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:45,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789345692] [2021-05-21 17:42:45,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:45,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:45,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:45,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:45,734 INFO L87 Difference]: Start difference. First operand 4568 states and 12155 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) [2021-05-21 17:42:46,723 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:42:47,057 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:47,223 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:42:47,408 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:42:47,577 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:42:47,777 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:42:48,103 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:42:48,256 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:42:48,412 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:42:48,574 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:42:48,709 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:42:48,865 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:42:49,021 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:42:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:49,028 INFO L93 Difference]: Finished difference Result 7159 states and 18131 transitions. [2021-05-21 17:42:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:42:49,028 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 [2021-05-21 17:42:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:49,033 INFO L225 Difference]: With dead ends: 7159 [2021-05-21 17:42:49,033 INFO L226 Difference]: Without dead ends: 7159 [2021-05-21 17:42:49,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2926.8ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:42:49,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7159 states. [2021-05-21 17:42:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7159 to 4568. [2021-05-21 17:42:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.662067455102935) internal successors, (12155), 4567 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12155 transitions. [2021-05-21 17:42:49,083 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12155 transitions. Word has length 94 [2021-05-21 17:42:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:49,083 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12155 transitions. [2021-05-21 17:42:49,083 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) [2021-05-21 17:42:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12155 transitions. [2021-05-21 17:42:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:49,087 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:49,087 INFO L521 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] [2021-05-21 17:42:49,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 17:42:49,087 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]=== [2021-05-21 17:42:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 547063309, now seen corresponding path program 4 times [2021-05-21 17:42:49,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:49,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602537650] [2021-05-21 17:42:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:49,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:49,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602537650] [2021-05-21 17:42:49,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602537650] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:49,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:49,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-21 17:42:49,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221693932] [2021-05-21 17:42:49,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-21 17:42:49,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-21 17:42:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-05-21 17:42:49,615 INFO L87 Difference]: Start difference. First operand 4568 states and 12155 transitions. Second operand has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:52,949 INFO L93 Difference]: Finished difference Result 6578 states and 17099 transitions. [2021-05-21 17:42:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 17:42:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-05-21 17:42:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:52,955 INFO L225 Difference]: With dead ends: 6578 [2021-05-21 17:42:52,955 INFO L226 Difference]: Without dead ends: 6524 [2021-05-21 17:42:52,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 2135.9ms TimeCoverageRelationStatistics Valid=939, Invalid=3753, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 17:42:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2021-05-21 17:42:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4964. [2021-05-21 17:42:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4964 states, 4962 states have (on average 2.664852881902459) internal successors, (13223), 4963 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 13223 transitions. [2021-05-21 17:42:53,003 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 13223 transitions. Word has length 94 [2021-05-21 17:42:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:53,003 INFO L482 AbstractCegarLoop]: Abstraction has 4964 states and 13223 transitions. [2021-05-21 17:42:53,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 13223 transitions. [2021-05-21 17:42:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:53,006 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:53,006 INFO L521 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] [2021-05-21 17:42:53,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-21 17:42:53,006 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]=== [2021-05-21 17:42:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:53,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1771290287, now seen corresponding path program 24 times [2021-05-21 17:42:53,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:53,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044775061] [2021-05-21 17:42:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:53,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:53,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044775061] [2021-05-21 17:42:53,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044775061] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:53,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:53,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:53,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436178365] [2021-05-21 17:42:53,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:53,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:53,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:53,495 INFO L87 Difference]: Start difference. First operand 4964 states and 13223 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) [2021-05-21 17:42:54,489 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:42:54,678 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:42:54,889 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:42:55,067 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:42:55,284 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:42:55,654 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:42:55,822 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:42:56,017 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:42:56,368 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:42:56,553 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:42:56,746 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:42:56,944 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:42:57,133 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:42:57,335 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:42:57,514 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:42:57,705 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:42:57,886 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:42:58,073 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:42:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:42:58,082 INFO L93 Difference]: Finished difference Result 10227 states and 25999 transitions. [2021-05-21 17:42:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 17:42:58,083 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 [2021-05-21 17:42:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:42:58,088 INFO L225 Difference]: With dead ends: 10227 [2021-05-21 17:42:58,088 INFO L226 Difference]: Without dead ends: 10227 [2021-05-21 17:42:58,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4150.0ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 17:42:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2021-05-21 17:42:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 4592. [2021-05-21 17:42:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4590 states have (on average 2.6638344226579522) internal successors, (12227), 4591 states have internal predecessors, (12227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:42:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 12227 transitions. [2021-05-21 17:42:58,146 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 12227 transitions. Word has length 94 [2021-05-21 17:42:58,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:42:58,147 INFO L482 AbstractCegarLoop]: Abstraction has 4592 states and 12227 transitions. [2021-05-21 17:42:58,147 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) [2021-05-21 17:42:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 12227 transitions. [2021-05-21 17:42:58,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:42:58,150 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:42:58,150 INFO L521 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] [2021-05-21 17:42:58,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-21 17:42:58,150 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]=== [2021-05-21 17:42:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:42:58,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857111, now seen corresponding path program 25 times [2021-05-21 17:42:58,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:42:58,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936559332] [2021-05-21 17:42:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:42:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:42:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:42:58,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:42:58,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936559332] [2021-05-21 17:42:58,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936559332] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:42:58,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:42:58,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:42:58,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121252517] [2021-05-21 17:42:58,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:42:58,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:42:58,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:42:58,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:42:58,641 INFO L87 Difference]: Start difference. First operand 4592 states and 12227 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) [2021-05-21 17:42:59,641 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:42:59,815 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:43:00,005 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:43:00,360 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:00,541 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:00,711 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:00,911 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:01,257 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:43:01,432 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:43:01,614 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:43:01,774 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:01,948 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:43:02,130 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:02,136 INFO L93 Difference]: Finished difference Result 8626 states and 21949 transitions. [2021-05-21 17:43:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:43:02,137 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 [2021-05-21 17:43:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:02,143 INFO L225 Difference]: With dead ends: 8626 [2021-05-21 17:43:02,143 INFO L226 Difference]: Without dead ends: 8626 [2021-05-21 17:43:02,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3128.4ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:43:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-05-21 17:43:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 4568. [2021-05-21 17:43:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.662067455102935) internal successors, (12155), 4567 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12155 transitions. [2021-05-21 17:43:02,213 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12155 transitions. Word has length 94 [2021-05-21 17:43:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:02,213 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12155 transitions. [2021-05-21 17:43:02,213 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) [2021-05-21 17:43:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12155 transitions. [2021-05-21 17:43:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:02,217 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:02,217 INFO L521 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] [2021-05-21 17:43:02,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-21 17:43:02,217 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]=== [2021-05-21 17:43:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:02,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1831152755, now seen corresponding path program 26 times [2021-05-21 17:43:02,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:02,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538452143] [2021-05-21 17:43:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:02,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:02,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538452143] [2021-05-21 17:43:02,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538452143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:02,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:02,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:02,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734674993] [2021-05-21 17:43:02,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:02,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:02,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:02,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:02,677 INFO L87 Difference]: Start difference. First operand 4568 states and 12155 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) [2021-05-21 17:43:03,744 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:03,897 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:04,071 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:43:04,267 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:43:04,464 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:43:04,712 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:43:04,849 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:43:04,988 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:43:05,134 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:43:05,256 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:05,398 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:05,541 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:43:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:05,549 INFO L93 Difference]: Finished difference Result 7442 states and 18798 transitions. [2021-05-21 17:43:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:43:05,549 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 [2021-05-21 17:43:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:05,555 INFO L225 Difference]: With dead ends: 7442 [2021-05-21 17:43:05,555 INFO L226 Difference]: Without dead ends: 7442 [2021-05-21 17:43:05,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2646.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:43:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7442 states. [2021-05-21 17:43:05,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7442 to 4580. [2021-05-21 17:43:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.661642638706859) internal successors, (12185), 4579 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:05,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12185 transitions. [2021-05-21 17:43:05,608 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12185 transitions. Word has length 94 [2021-05-21 17:43:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:05,608 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12185 transitions. [2021-05-21 17:43:05,608 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) [2021-05-21 17:43:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12185 transitions. [2021-05-21 17:43:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:05,611 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:05,611 INFO L521 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] [2021-05-21 17:43:05,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-21 17:43:05,611 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]=== [2021-05-21 17:43:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:05,612 INFO L82 PathProgramCache]: Analyzing trace with hash -62617001, now seen corresponding path program 27 times [2021-05-21 17:43:05,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:05,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642090782] [2021-05-21 17:43:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:06,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:06,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642090782] [2021-05-21 17:43:06,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642090782] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:06,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:06,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:06,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001450314] [2021-05-21 17:43:06,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:06,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:06,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:06,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:06,079 INFO L87 Difference]: Start difference. First operand 4580 states and 12185 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) [2021-05-21 17:43:07,159 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:07,315 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:07,486 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:07,675 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:07,855 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:08,054 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:08,343 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:43:08,484 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:43:08,622 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:43:08,769 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:43:08,894 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:09,036 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:09,179 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:43:09,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:09,186 INFO L93 Difference]: Finished difference Result 7785 states and 19498 transitions. [2021-05-21 17:43:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:43:09,186 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 [2021-05-21 17:43:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:09,192 INFO L225 Difference]: With dead ends: 7785 [2021-05-21 17:43:09,192 INFO L226 Difference]: Without dead ends: 7785 [2021-05-21 17:43:09,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2808.7ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:43:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-05-21 17:43:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 4576. [2021-05-21 17:43:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.661783996501968) internal successors, (12175), 4575 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12175 transitions. [2021-05-21 17:43:09,244 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12175 transitions. Word has length 94 [2021-05-21 17:43:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:09,244 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12175 transitions. [2021-05-21 17:43:09,244 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) [2021-05-21 17:43:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12175 transitions. [2021-05-21 17:43:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:09,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:09,247 INFO L521 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] [2021-05-21 17:43:09,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-21 17:43:09,247 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]=== [2021-05-21 17:43:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:09,247 INFO L82 PathProgramCache]: Analyzing trace with hash -597869171, now seen corresponding path program 28 times [2021-05-21 17:43:09,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:09,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377212422] [2021-05-21 17:43:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:09,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:09,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377212422] [2021-05-21 17:43:09,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377212422] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:09,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:09,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:09,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381389412] [2021-05-21 17:43:09,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:09,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:09,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:09,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:09,749 INFO L87 Difference]: Start difference. First operand 4576 states and 12175 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) [2021-05-21 17:43:10,847 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:10,998 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:43:11,162 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:11,328 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:11,534 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:11,703 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:11,908 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:12,193 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:43:12,334 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:43:12,478 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:43:12,625 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:43:12,749 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:12,891 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:13,033 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:43:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:13,040 INFO L93 Difference]: Finished difference Result 7340 states and 18556 transitions. [2021-05-21 17:43:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:43:13,041 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 [2021-05-21 17:43:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:13,046 INFO L225 Difference]: With dead ends: 7340 [2021-05-21 17:43:13,046 INFO L226 Difference]: Without dead ends: 7340 [2021-05-21 17:43:13,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3015.5ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:43:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7340 states. [2021-05-21 17:43:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7340 to 4576. [2021-05-21 17:43:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.661783996501968) internal successors, (12175), 4575 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12175 transitions. [2021-05-21 17:43:13,097 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12175 transitions. Word has length 94 [2021-05-21 17:43:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:13,097 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12175 transitions. [2021-05-21 17:43:13,098 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) [2021-05-21 17:43:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12175 transitions. [2021-05-21 17:43:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:13,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:13,101 INFO L521 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] [2021-05-21 17:43:13,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-21 17:43:13,101 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]=== [2021-05-21 17:43:13,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:13,101 INFO L82 PathProgramCache]: Analyzing trace with hash -25428535, now seen corresponding path program 5 times [2021-05-21 17:43:13,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:13,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598565054] [2021-05-21 17:43:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:13,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:13,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598565054] [2021-05-21 17:43:13,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598565054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:13,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:13,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-21 17:43:13,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005747211] [2021-05-21 17:43:13,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-21 17:43:13,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:13,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-21 17:43:13,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-05-21 17:43:13,652 INFO L87 Difference]: Start difference. First operand 4576 states and 12175 transitions. Second operand has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:16,320 INFO L93 Difference]: Finished difference Result 6715 states and 17583 transitions. [2021-05-21 17:43:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 17:43:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2021-05-21 17:43:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:16,331 INFO L225 Difference]: With dead ends: 6715 [2021-05-21 17:43:16,331 INFO L226 Difference]: Without dead ends: 6661 [2021-05-21 17:43:16,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 1979.5ms TimeCoverageRelationStatistics Valid=879, Invalid=3543, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 17:43:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6661 states. [2021-05-21 17:43:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6661 to 5044. [2021-05-21 17:43:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5044 states, 5042 states have (on average 2.6693772312574375) internal successors, (13459), 5043 states have internal predecessors, (13459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 13459 transitions. [2021-05-21 17:43:16,378 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 13459 transitions. Word has length 94 [2021-05-21 17:43:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:16,378 INFO L482 AbstractCegarLoop]: Abstraction has 5044 states and 13459 transitions. [2021-05-21 17:43:16,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 13459 transitions. [2021-05-21 17:43:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:16,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:16,382 INFO L521 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] [2021-05-21 17:43:16,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-21 17:43:16,382 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]=== [2021-05-21 17:43:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1198798443, now seen corresponding path program 29 times [2021-05-21 17:43:16,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:16,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115715326] [2021-05-21 17:43:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:16,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:16,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115715326] [2021-05-21 17:43:16,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115715326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:16,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:16,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:16,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531546251] [2021-05-21 17:43:16,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:16,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:16,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:16,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:16,890 INFO L87 Difference]: Start difference. First operand 5044 states and 13459 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) [2021-05-21 17:43:17,887 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:18,065 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:43:18,244 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:43:18,447 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:43:18,611 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:43:18,830 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:43:19,216 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:19,433 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:43:19,603 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:19,814 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:43:20,179 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:43:20,367 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:43:20,528 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:43:20,720 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:43:20,886 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:43:21,089 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:43:21,282 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:43:21,473 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:43:21,637 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:21,824 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:43:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:21,833 INFO L93 Difference]: Finished difference Result 10865 states and 27705 transitions. [2021-05-21 17:43:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:43:21,834 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 [2021-05-21 17:43:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:21,841 INFO L225 Difference]: With dead ends: 10865 [2021-05-21 17:43:21,841 INFO L226 Difference]: Without dead ends: 10865 [2021-05-21 17:43:21,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4368.8ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:43:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2021-05-21 17:43:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 4648. [2021-05-21 17:43:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 2.667025398191993) internal successors, (12391), 4647 states have internal predecessors, (12391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 12391 transitions. [2021-05-21 17:43:21,899 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 12391 transitions. Word has length 94 [2021-05-21 17:43:21,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:21,900 INFO L482 AbstractCegarLoop]: Abstraction has 4648 states and 12391 transitions. [2021-05-21 17:43:21,900 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) [2021-05-21 17:43:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 12391 transitions. [2021-05-21 17:43:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:21,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:21,903 INFO L521 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] [2021-05-21 17:43:21,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-21 17:43:21,903 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]=== [2021-05-21 17:43:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2058348955, now seen corresponding path program 30 times [2021-05-21 17:43:21,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:21,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679768534] [2021-05-21 17:43:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:22,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:22,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679768534] [2021-05-21 17:43:22,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679768534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:22,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:22,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:22,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99485552] [2021-05-21 17:43:22,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:22,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:22,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:22,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:22,391 INFO L87 Difference]: Start difference. First operand 4648 states and 12391 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) [2021-05-21 17:43:23,372 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:23,547 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:43:23,720 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:43:23,914 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:43:24,288 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:24,449 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:24,642 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:24,815 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:25,043 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:25,419 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:43:25,587 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:43:25,747 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:43:25,923 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:43:26,091 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:43:26,275 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:43:26,439 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:26,596 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:43:26,795 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:43:26,959 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:27,130 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:27,140 INFO L93 Difference]: Finished difference Result 11152 states and 28199 transitions. [2021-05-21 17:43:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:43:27,140 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 [2021-05-21 17:43:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:27,147 INFO L225 Difference]: With dead ends: 11152 [2021-05-21 17:43:27,147 INFO L226 Difference]: Without dead ends: 11152 [2021-05-21 17:43:27,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4206.3ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:43:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11152 states. [2021-05-21 17:43:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11152 to 4624. [2021-05-21 17:43:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4622 states have (on average 2.665296408481177) internal successors, (12319), 4623 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 12319 transitions. [2021-05-21 17:43:27,209 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 12319 transitions. Word has length 94 [2021-05-21 17:43:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:27,209 INFO L482 AbstractCegarLoop]: Abstraction has 4624 states and 12319 transitions. [2021-05-21 17:43:27,209 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) [2021-05-21 17:43:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 12319 transitions. [2021-05-21 17:43:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:27,212 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:27,213 INFO L521 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] [2021-05-21 17:43:27,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-21 17:43:27,213 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]=== [2021-05-21 17:43:27,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:27,213 INFO L82 PathProgramCache]: Analyzing trace with hash 271589039, now seen corresponding path program 31 times [2021-05-21 17:43:27,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:27,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976672127] [2021-05-21 17:43:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:27,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:27,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976672127] [2021-05-21 17:43:27,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976672127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:27,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:27,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:27,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354544261] [2021-05-21 17:43:27,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:27,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:27,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:27,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:27,689 INFO L87 Difference]: Start difference. First operand 4624 states and 12319 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) [2021-05-21 17:43:28,494 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-05-21 17:43:28,656 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:28,829 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:43:29,187 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:43:29,346 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:29,509 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:29,706 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:29,874 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:30,078 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:30,411 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:43:30,582 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:43:30,747 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:43:30,892 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:43:31,048 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:43:31,211 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:31,217 INFO L93 Difference]: Finished difference Result 9107 states and 23220 transitions. [2021-05-21 17:43:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:43:31,217 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 [2021-05-21 17:43:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:31,223 INFO L225 Difference]: With dead ends: 9107 [2021-05-21 17:43:31,223 INFO L226 Difference]: Without dead ends: 9107 [2021-05-21 17:43:31,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3143.4ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:43:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2021-05-21 17:43:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 4576. [2021-05-21 17:43:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.661783996501968) internal successors, (12175), 4575 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12175 transitions. [2021-05-21 17:43:31,279 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12175 transitions. Word has length 94 [2021-05-21 17:43:31,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:31,279 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12175 transitions. [2021-05-21 17:43:31,279 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) [2021-05-21 17:43:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12175 transitions. [2021-05-21 17:43:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:31,282 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:31,282 INFO L521 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] [2021-05-21 17:43:31,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-21 17:43:31,282 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]=== [2021-05-21 17:43:31,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:31,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1720847629, now seen corresponding path program 32 times [2021-05-21 17:43:31,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:31,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069830488] [2021-05-21 17:43:31,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:31,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:31,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069830488] [2021-05-21 17:43:31,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069830488] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:31,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:31,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:31,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677748207] [2021-05-21 17:43:31,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:31,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:31,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:31,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:31,716 INFO L87 Difference]: Start difference. First operand 4576 states and 12175 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) [2021-05-21 17:43:32,820 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:32,993 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:33,156 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:43:33,357 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:43:33,561 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:43:34,071 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:43:34,216 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:43:34,454 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:43:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:34,592 INFO L93 Difference]: Finished difference Result 7589 states and 19149 transitions. [2021-05-21 17:43:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:43:34,592 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 [2021-05-21 17:43:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:34,597 INFO L225 Difference]: With dead ends: 7589 [2021-05-21 17:43:34,597 INFO L226 Difference]: Without dead ends: 7589 [2021-05-21 17:43:34,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2520.2ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:43:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2021-05-21 17:43:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 4592. [2021-05-21 17:43:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4590 states have (on average 2.661220043572985) internal successors, (12215), 4591 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) [2021-05-21 17:43:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 12215 transitions. [2021-05-21 17:43:34,647 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 12215 transitions. Word has length 94 [2021-05-21 17:43:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:34,648 INFO L482 AbstractCegarLoop]: Abstraction has 4592 states and 12215 transitions. [2021-05-21 17:43:34,648 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) [2021-05-21 17:43:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 12215 transitions. [2021-05-21 17:43:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:34,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:34,651 INFO L521 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] [2021-05-21 17:43:34,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-21 17:43:34,651 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]=== [2021-05-21 17:43:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash -805583913, now seen corresponding path program 33 times [2021-05-21 17:43:34,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:34,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243045196] [2021-05-21 17:43:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:35,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:35,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243045196] [2021-05-21 17:43:35,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243045196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:35,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:35,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:35,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954926617] [2021-05-21 17:43:35,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:35,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:35,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:35,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:35,097 INFO L87 Difference]: Start difference. First operand 4592 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) [2021-05-21 17:43:36,198 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:36,370 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:36,547 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:36,743 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:36,914 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:37,118 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:37,679 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:43:37,813 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:43:37,935 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-05-21 17:43:38,069 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:43:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:38,208 INFO L93 Difference]: Finished difference Result 7932 states and 19849 transitions. [2021-05-21 17:43:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:43:38,208 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 [2021-05-21 17:43:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:38,214 INFO L225 Difference]: With dead ends: 7932 [2021-05-21 17:43:38,214 INFO L226 Difference]: Without dead ends: 7932 [2021-05-21 17:43:38,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2713.4ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:43:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2021-05-21 17:43:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 4588. [2021-05-21 17:43:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4586 states have (on average 2.6613606628870476) internal successors, (12205), 4587 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:38,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 12205 transitions. [2021-05-21 17:43:38,266 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 12205 transitions. Word has length 94 [2021-05-21 17:43:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:38,266 INFO L482 AbstractCegarLoop]: Abstraction has 4588 states and 12205 transitions. [2021-05-21 17:43:38,266 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) [2021-05-21 17:43:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 12205 transitions. [2021-05-21 17:43:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:38,269 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:38,269 INFO L521 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] [2021-05-21 17:43:38,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-21 17:43:38,269 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]=== [2021-05-21 17:43:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:38,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1340836083, now seen corresponding path program 34 times [2021-05-21 17:43:38,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:38,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736738430] [2021-05-21 17:43:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:38,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:38,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736738430] [2021-05-21 17:43:38,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736738430] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:38,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:38,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:38,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234251283] [2021-05-21 17:43:38,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:38,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:38,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:38,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:38,736 INFO L87 Difference]: Start difference. First operand 4588 states and 12205 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) [2021-05-21 17:43:39,856 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:40,017 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:43:40,188 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:40,359 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:40,559 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:40,728 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:40,940 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:41,497 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:43:41,646 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:43:41,882 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:43:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:42,020 INFO L93 Difference]: Finished difference Result 8019 states and 20050 transitions. [2021-05-21 17:43:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:43:42,020 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 [2021-05-21 17:43:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:42,025 INFO L225 Difference]: With dead ends: 8019 [2021-05-21 17:43:42,025 INFO L226 Difference]: Without dead ends: 8019 [2021-05-21 17:43:42,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2864.2ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:43:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8019 states. [2021-05-21 17:43:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8019 to 4580. [2021-05-21 17:43:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.661642638706859) internal successors, (12185), 4579 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12185 transitions. [2021-05-21 17:43:42,075 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12185 transitions. Word has length 94 [2021-05-21 17:43:42,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:42,075 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12185 transitions. [2021-05-21 17:43:42,075 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) [2021-05-21 17:43:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12185 transitions. [2021-05-21 17:43:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:42,078 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:42,079 INFO L521 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] [2021-05-21 17:43:42,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-21 17:43:42,079 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]=== [2021-05-21 17:43:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1764516877, now seen corresponding path program 35 times [2021-05-21 17:43:42,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:42,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724552891] [2021-05-21 17:43:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:42,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:42,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:42,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724552891] [2021-05-21 17:43:42,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724552891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:42,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:42,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:42,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820085640] [2021-05-21 17:43:42,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:42,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:42,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:42,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:42,552 INFO L87 Difference]: Start difference. First operand 4580 states and 12185 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) [2021-05-21 17:43:43,672 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:43:43,820 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:43:43,959 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:44,121 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:44,299 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:44,520 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:44,691 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:44,896 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:45,315 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-05-21 17:43:45,441 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:43:45,572 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:43:45,808 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:43:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:45,945 INFO L93 Difference]: Finished difference Result 7474 states and 18869 transitions. [2021-05-21 17:43:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:43:45,946 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 [2021-05-21 17:43:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:45,951 INFO L225 Difference]: With dead ends: 7474 [2021-05-21 17:43:45,951 INFO L226 Difference]: Without dead ends: 7474 [2021-05-21 17:43:45,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3031.9ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:43:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-05-21 17:43:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 4580. [2021-05-21 17:43:45,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.661642638706859) internal successors, (12185), 4579 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12185 transitions. [2021-05-21 17:43:46,000 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12185 transitions. Word has length 94 [2021-05-21 17:43:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:46,000 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12185 transitions. [2021-05-21 17:43:46,001 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) [2021-05-21 17:43:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12185 transitions. [2021-05-21 17:43:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:46,004 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:46,004 INFO L521 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] [2021-05-21 17:43:46,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-21 17:43:46,004 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]=== [2021-05-21 17:43:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash 949628105, now seen corresponding path program 6 times [2021-05-21 17:43:46,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:46,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029214734] [2021-05-21 17:43:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:46,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:46,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029214734] [2021-05-21 17:43:46,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029214734] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:46,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:46,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:43:46,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274464753] [2021-05-21 17:43:46,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:43:46,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:46,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:43:46,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:43:46,285 INFO L87 Difference]: Start difference. First operand 4580 states and 12185 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) [2021-05-21 17:43:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:47,420 INFO L93 Difference]: Finished difference Result 4752 states and 12505 transitions. [2021-05-21 17:43:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 17:43:47,421 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 [2021-05-21 17:43:47,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:47,424 INFO L225 Difference]: With dead ends: 4752 [2021-05-21 17:43:47,424 INFO L226 Difference]: Without dead ends: 4752 [2021-05-21 17:43:47,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 918.2ms TimeCoverageRelationStatistics Valid=534, Invalid=1536, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:43:47,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-05-21 17:43:47,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4232. [2021-05-21 17:43:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 2.661465721040189) internal successors, (11258), 4231 states have internal predecessors, (11258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 11258 transitions. [2021-05-21 17:43:47,461 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 11258 transitions. Word has length 94 [2021-05-21 17:43:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:47,462 INFO L482 AbstractCegarLoop]: Abstraction has 4232 states and 11258 transitions. [2021-05-21 17:43:47,462 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) [2021-05-21 17:43:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 11258 transitions. [2021-05-21 17:43:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:47,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:47,465 INFO L521 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] [2021-05-21 17:43:47,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-21 17:43:47,465 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]=== [2021-05-21 17:43:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash -2121112213, now seen corresponding path program 36 times [2021-05-21 17:43:47,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:47,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602651011] [2021-05-21 17:43:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:47,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:47,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602651011] [2021-05-21 17:43:47,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602651011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:47,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:47,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:47,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237056354] [2021-05-21 17:43:47,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:47,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:47,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:47,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:47,972 INFO L87 Difference]: Start difference. First operand 4232 states and 11258 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) [2021-05-21 17:43:48,789 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:48,957 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:49,089 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:43:49,258 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:43:49,440 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:43:49,641 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:43:49,805 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:43:50,017 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:43:50,341 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:50,511 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:50,740 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:43:50,934 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:51,145 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:43:51,485 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:43:51,670 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:43:51,812 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:43:52,004 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:43:52,153 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:43:52,353 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:43:52,499 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:43:52,691 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:43:52,851 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:53,036 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:43:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:53,045 INFO L93 Difference]: Finished difference Result 10053 states and 25578 transitions. [2021-05-21 17:43:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:43:53,045 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 [2021-05-21 17:43:53,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:53,052 INFO L225 Difference]: With dead ends: 10053 [2021-05-21 17:43:53,052 INFO L226 Difference]: Without dead ends: 10053 [2021-05-21 17:43:53,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4528.5ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:43:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10053 states. [2021-05-21 17:43:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10053 to 4280. [2021-05-21 17:43:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4278 states have (on average 2.665264142122487) internal successors, (11402), 4279 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) [2021-05-21 17:43:53,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 11402 transitions. [2021-05-21 17:43:53,107 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 11402 transitions. Word has length 94 [2021-05-21 17:43:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:53,108 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 11402 transitions. [2021-05-21 17:43:53,108 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) [2021-05-21 17:43:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 11402 transitions. [2021-05-21 17:43:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:53,111 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:53,111 INFO L521 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] [2021-05-21 17:43:53,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-21 17:43:53,111 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]=== [2021-05-21 17:43:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1083292315, now seen corresponding path program 37 times [2021-05-21 17:43:53,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:53,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59284499] [2021-05-21 17:43:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:53,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:53,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59284499] [2021-05-21 17:43:53,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59284499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:53,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:53,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:53,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625249659] [2021-05-21 17:43:53,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:53,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:53,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:53,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:53,611 INFO L87 Difference]: Start difference. First operand 4280 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) [2021-05-21 17:43:54,414 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:43:54,586 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:43:54,721 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:43:54,890 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:43:55,068 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:43:55,269 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:43:55,608 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:55,773 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:43:55,951 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:56,148 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:43:56,321 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:56,546 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:43:56,904 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:43:57,071 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:43:57,215 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:43:57,390 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:43:57,541 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:43:57,723 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:43:57,884 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:43:58,025 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:43:58,197 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:43:58,349 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:43:58,536 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:43:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:43:58,546 INFO L93 Difference]: Finished difference Result 10337 states and 26075 transitions. [2021-05-21 17:43:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:43:58,546 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 [2021-05-21 17:43:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:43:58,552 INFO L225 Difference]: With dead ends: 10337 [2021-05-21 17:43:58,552 INFO L226 Difference]: Without dead ends: 10337 [2021-05-21 17:43:58,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4417.1ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:43:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2021-05-21 17:43:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 4268. [2021-05-21 17:43:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4266 states have (on average 2.6643225503985) internal successors, (11366), 4267 states have internal predecessors, (11366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:43:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 11366 transitions. [2021-05-21 17:43:58,609 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 11366 transitions. Word has length 94 [2021-05-21 17:43:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:43:58,609 INFO L482 AbstractCegarLoop]: Abstraction has 4268 states and 11366 transitions. [2021-05-21 17:43:58,609 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) [2021-05-21 17:43:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 11366 transitions. [2021-05-21 17:43:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:43:58,612 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:43:58,612 INFO L521 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] [2021-05-21 17:43:58,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-21 17:43:58,612 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]=== [2021-05-21 17:43:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:43:58,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1246645679, now seen corresponding path program 38 times [2021-05-21 17:43:58,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:43:58,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163068642] [2021-05-21 17:43:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:43:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:43:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:43:59,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:43:59,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163068642] [2021-05-21 17:43:59,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163068642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:43:59,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:43:59,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:43:59,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849849850] [2021-05-21 17:43:59,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:43:59,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:43:59,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:43:59,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:43:59,125 INFO L87 Difference]: Start difference. First operand 4268 states and 11366 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) [2021-05-21 17:43:59,909 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:00,065 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:00,209 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:44:00,376 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:44:00,766 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:00,904 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:01,067 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:01,246 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:01,442 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:01,613 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:01,820 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:02,177 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:44:02,331 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:44:02,475 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:44:02,635 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:44:02,788 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:44:02,955 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:44:03,104 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:03,246 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:44:03,405 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:44:03,568 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:03,724 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:03,733 INFO L93 Difference]: Finished difference Result 10381 states and 26173 transitions. [2021-05-21 17:44:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 17:44:03,734 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 [2021-05-21 17:44:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:03,740 INFO L225 Difference]: With dead ends: 10381 [2021-05-21 17:44:03,741 INFO L226 Difference]: Without dead ends: 10381 [2021-05-21 17:44:03,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4167.9ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 17:44:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10381 states. [2021-05-21 17:44:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10381 to 4244. [2021-05-21 17:44:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 4242 states have (on average 2.6624233851956625) internal successors, (11294), 4243 states have internal predecessors, (11294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 11294 transitions. [2021-05-21 17:44:03,797 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 11294 transitions. Word has length 94 [2021-05-21 17:44:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:03,797 INFO L482 AbstractCegarLoop]: Abstraction has 4244 states and 11294 transitions. [2021-05-21 17:44:03,797 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) [2021-05-21 17:44:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 11294 transitions. [2021-05-21 17:44:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:03,800 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:03,800 INFO L521 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] [2021-05-21 17:44:03,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-21 17:44:03,800 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]=== [2021-05-21 17:44:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:03,801 INFO L82 PathProgramCache]: Analyzing trace with hash -855319471, now seen corresponding path program 39 times [2021-05-21 17:44:03,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:03,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039858880] [2021-05-21 17:44:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:04,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:04,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039858880] [2021-05-21 17:44:04,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039858880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:04,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:04,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:04,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313568087] [2021-05-21 17:44:04,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:04,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:04,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:04,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:04,316 INFO L87 Difference]: Start difference. First operand 4244 states and 11294 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) [2021-05-21 17:44:05,116 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:05,271 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:44:05,600 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:05,771 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:05,911 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:06,077 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:06,249 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:06,443 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:06,612 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:06,820 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:07,135 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:44:07,279 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:44:07,431 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:44:07,562 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:07,716 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:44:07,865 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:07,872 INFO L93 Difference]: Finished difference Result 8856 states and 22528 transitions. [2021-05-21 17:44:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:44:07,872 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 [2021-05-21 17:44:07,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:07,878 INFO L225 Difference]: With dead ends: 8856 [2021-05-21 17:44:07,878 INFO L226 Difference]: Without dead ends: 8856 [2021-05-21 17:44:07,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3202.1ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:44:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8856 states. [2021-05-21 17:44:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8856 to 4232. [2021-05-21 17:44:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 2.661465721040189) internal successors, (11258), 4231 states have internal predecessors, (11258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 11258 transitions. [2021-05-21 17:44:07,928 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 11258 transitions. Word has length 94 [2021-05-21 17:44:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:07,928 INFO L482 AbstractCegarLoop]: Abstraction has 4232 states and 11258 transitions. [2021-05-21 17:44:07,928 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) [2021-05-21 17:44:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 11258 transitions. [2021-05-21 17:44:07,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:07,931 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:07,931 INFO L521 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] [2021-05-21 17:44:07,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-21 17:44:07,931 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]=== [2021-05-21 17:44:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:07,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1394406491, now seen corresponding path program 40 times [2021-05-21 17:44:07,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:07,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049380620] [2021-05-21 17:44:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:08,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:08,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049380620] [2021-05-21 17:44:08,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049380620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:08,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:08,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:08,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706012898] [2021-05-21 17:44:08,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:08,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:08,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:08,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:08,365 INFO L87 Difference]: Start difference. First operand 4232 states and 11258 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) [2021-05-21 17:44:09,381 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:09,564 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:09,725 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:44:09,920 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:44:10,117 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:44:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:11,019 INFO L93 Difference]: Finished difference Result 6640 states and 16873 transitions. [2021-05-21 17:44:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:44:11,019 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 [2021-05-21 17:44:11,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:11,025 INFO L225 Difference]: With dead ends: 6640 [2021-05-21 17:44:11,025 INFO L226 Difference]: Without dead ends: 6640 [2021-05-21 17:44:11,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2410.4ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:44:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2021-05-21 17:44:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 4239. [2021-05-21 17:44:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4237 states have (on average 2.660844937455747) internal successors, (11274), 4238 states have internal predecessors, (11274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 11274 transitions. [2021-05-21 17:44:11,073 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 11274 transitions. Word has length 94 [2021-05-21 17:44:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:11,073 INFO L482 AbstractCegarLoop]: Abstraction has 4239 states and 11274 transitions. [2021-05-21 17:44:11,073 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) [2021-05-21 17:44:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 11274 transitions. [2021-05-21 17:44:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:11,076 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:11,077 INFO L521 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] [2021-05-21 17:44:11,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-21 17:44:11,077 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]=== [2021-05-21 17:44:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 374129263, now seen corresponding path program 41 times [2021-05-21 17:44:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:11,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489788141] [2021-05-21 17:44:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:11,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:11,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489788141] [2021-05-21 17:44:11,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489788141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:11,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:11,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:11,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394836093] [2021-05-21 17:44:11,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:11,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:11,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:11,561 INFO L87 Difference]: Start difference. First operand 4239 states and 11274 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) [2021-05-21 17:44:12,630 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:12,809 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:12,985 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:13,203 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:13,372 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:13,576 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:14,560 INFO L93 Difference]: Finished difference Result 6971 states and 17550 transitions. [2021-05-21 17:44:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:44:14,560 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 [2021-05-21 17:44:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:14,565 INFO L225 Difference]: With dead ends: 6971 [2021-05-21 17:44:14,565 INFO L226 Difference]: Without dead ends: 6971 [2021-05-21 17:44:14,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2623.4ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:44:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6971 states. [2021-05-21 17:44:14,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6971 to 4236. [2021-05-21 17:44:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 4234 states have (on average 2.660840812470477) internal successors, (11266), 4235 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 11266 transitions. [2021-05-21 17:44:14,612 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 11266 transitions. Word has length 94 [2021-05-21 17:44:14,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:14,613 INFO L482 AbstractCegarLoop]: Abstraction has 4236 states and 11266 transitions. [2021-05-21 17:44:14,613 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) [2021-05-21 17:44:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 11266 transitions. [2021-05-21 17:44:14,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:14,615 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:14,615 INFO L521 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] [2021-05-21 17:44:14,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-21 17:44:14,616 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]=== [2021-05-21 17:44:14,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:14,616 INFO L82 PathProgramCache]: Analyzing trace with hash -161122907, now seen corresponding path program 42 times [2021-05-21 17:44:14,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:14,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889667374] [2021-05-21 17:44:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:15,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:15,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889667374] [2021-05-21 17:44:15,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889667374] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:15,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:15,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:15,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576416964] [2021-05-21 17:44:15,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:15,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:15,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:15,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:15,111 INFO L87 Difference]: Start difference. First operand 4236 states and 11266 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) [2021-05-21 17:44:16,186 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:16,354 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:16,530 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:16,707 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:16,910 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:17,099 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:17,312 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:18,302 INFO L93 Difference]: Finished difference Result 7055 states and 17745 transitions. [2021-05-21 17:44:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:44:18,302 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 [2021-05-21 17:44:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:18,308 INFO L225 Difference]: With dead ends: 7055 [2021-05-21 17:44:18,308 INFO L226 Difference]: Without dead ends: 7055 [2021-05-21 17:44:18,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2780.5ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:44:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2021-05-21 17:44:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 4230. [2021-05-21 17:44:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4228 states have (on average 2.660832544938505) internal successors, (11250), 4229 states have internal predecessors, (11250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 11250 transitions. [2021-05-21 17:44:18,360 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 11250 transitions. Word has length 94 [2021-05-21 17:44:18,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:18,360 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 11250 transitions. [2021-05-21 17:44:18,360 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) [2021-05-21 17:44:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 11250 transitions. [2021-05-21 17:44:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:18,363 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:18,363 INFO L521 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] [2021-05-21 17:44:18,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-21 17:44:18,364 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]=== [2021-05-21 17:44:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1350737243, now seen corresponding path program 43 times [2021-05-21 17:44:18,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:18,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363286259] [2021-05-21 17:44:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:18,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:18,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363286259] [2021-05-21 17:44:18,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363286259] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:18,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:18,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:18,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785719250] [2021-05-21 17:44:18,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:18,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:18,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:18,872 INFO L87 Difference]: Start difference. First operand 4230 states and 11250 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) [2021-05-21 17:44:19,947 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:20,101 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:20,239 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:20,408 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:20,591 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:20,803 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:20,972 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:21,179 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:22,146 INFO L93 Difference]: Finished difference Result 7139 states and 17940 transitions. [2021-05-21 17:44:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:44:22,147 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 [2021-05-21 17:44:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:22,152 INFO L225 Difference]: With dead ends: 7139 [2021-05-21 17:44:22,152 INFO L226 Difference]: Without dead ends: 7139 [2021-05-21 17:44:22,152 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2939.6ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:44:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2021-05-21 17:44:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 4227. [2021-05-21 17:44:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 4225 states have (on average 2.660828402366864) internal successors, (11242), 4226 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 11242 transitions. [2021-05-21 17:44:22,197 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 11242 transitions. Word has length 94 [2021-05-21 17:44:22,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:22,197 INFO L482 AbstractCegarLoop]: Abstraction has 4227 states and 11242 transitions. [2021-05-21 17:44:22,197 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) [2021-05-21 17:44:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 11242 transitions. [2021-05-21 17:44:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:22,200 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:22,200 INFO L521 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] [2021-05-21 17:44:22,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-21 17:44:22,200 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]=== [2021-05-21 17:44:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:22,201 INFO L82 PathProgramCache]: Analyzing trace with hash 682289263, now seen corresponding path program 44 times [2021-05-21 17:44:22,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:22,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702657397] [2021-05-21 17:44:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:22,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:22,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702657397] [2021-05-21 17:44:22,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702657397] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:22,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:22,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:22,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321211470] [2021-05-21 17:44:22,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:22,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:22,717 INFO L87 Difference]: Start difference. First operand 4227 states and 11242 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) [2021-05-21 17:44:23,810 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:23,944 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:24,101 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:24,243 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:24,424 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:24,616 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:24,816 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:24,990 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:25,201 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:26,198 INFO L93 Difference]: Finished difference Result 6588 states and 16730 transitions. [2021-05-21 17:44:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 17:44:26,199 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 [2021-05-21 17:44:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:26,204 INFO L225 Difference]: With dead ends: 6588 [2021-05-21 17:44:26,204 INFO L226 Difference]: Without dead ends: 6588 [2021-05-21 17:44:26,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3113.0ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 17:44:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-05-21 17:44:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4182. [2021-05-21 17:44:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4180 states have (on average 2.659569377990431) internal successors, (11117), 4181 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 11117 transitions. [2021-05-21 17:44:26,248 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 11117 transitions. Word has length 94 [2021-05-21 17:44:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:26,248 INFO L482 AbstractCegarLoop]: Abstraction has 4182 states and 11117 transitions. [2021-05-21 17:44:26,248 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) [2021-05-21 17:44:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 11117 transitions. [2021-05-21 17:44:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:26,251 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:26,251 INFO L521 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] [2021-05-21 17:44:26,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-21 17:44:26,251 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]=== [2021-05-21 17:44:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash 52912303, now seen corresponding path program 45 times [2021-05-21 17:44:26,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:26,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698514655] [2021-05-21 17:44:26,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:26,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:26,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698514655] [2021-05-21 17:44:26,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698514655] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:26,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:26,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:26,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765817732] [2021-05-21 17:44:26,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:26,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:26,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:26,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:26,820 INFO L87 Difference]: Start difference. First operand 4182 states and 11117 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) [2021-05-21 17:44:27,652 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:27,926 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:28,060 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:44:28,248 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:44:28,433 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:44:28,634 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:44:28,798 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:44:29,012 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:44:29,320 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:29,477 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:29,664 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:29,908 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:44:30,082 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:30,305 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:44:30,651 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:44:30,836 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:44:30,965 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:44:31,155 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:44:31,292 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:44:31,490 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:44:31,622 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:44:31,811 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:44:31,947 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:32,143 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:44:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:32,152 INFO L93 Difference]: Finished difference Result 9258 states and 23595 transitions. [2021-05-21 17:44:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 17:44:32,152 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 [2021-05-21 17:44:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:32,158 INFO L225 Difference]: With dead ends: 9258 [2021-05-21 17:44:32,158 INFO L226 Difference]: Without dead ends: 9258 [2021-05-21 17:44:32,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 4747.8ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 17:44:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2021-05-21 17:44:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 4242. [2021-05-21 17:44:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 4240 states have (on average 2.6643867924528304) internal successors, (11297), 4241 states have internal predecessors, (11297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 11297 transitions. [2021-05-21 17:44:32,212 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 11297 transitions. Word has length 94 [2021-05-21 17:44:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:32,212 INFO L482 AbstractCegarLoop]: Abstraction has 4242 states and 11297 transitions. [2021-05-21 17:44:32,212 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) [2021-05-21 17:44:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 11297 transitions. [2021-05-21 17:44:32,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:32,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:32,215 INFO L521 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] [2021-05-21 17:44:32,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-21 17:44:32,215 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]=== [2021-05-21 17:44:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1090732201, now seen corresponding path program 46 times [2021-05-21 17:44:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:32,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339297700] [2021-05-21 17:44:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:32,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:32,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339297700] [2021-05-21 17:44:32,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339297700] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:32,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:32,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:32,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826336747] [2021-05-21 17:44:32,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:32,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:32,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:32,726 INFO L87 Difference]: Start difference. First operand 4242 states and 11297 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) [2021-05-21 17:44:33,532 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:33,804 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:33,949 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:44:34,125 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:44:34,307 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:44:34,505 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:44:34,825 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:34,983 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:35,164 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:35,350 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:35,546 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:35,721 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:35,950 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:36,310 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:44:36,480 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:44:36,611 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:44:36,792 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:44:36,932 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:44:37,117 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:44:37,280 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:37,410 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:44:37,586 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:44:37,725 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:37,909 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:37,918 INFO L93 Difference]: Finished difference Result 9542 states and 24092 transitions. [2021-05-21 17:44:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 17:44:37,919 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 [2021-05-21 17:44:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:37,924 INFO L225 Difference]: With dead ends: 9542 [2021-05-21 17:44:37,924 INFO L226 Difference]: Without dead ends: 9542 [2021-05-21 17:44:37,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4627.8ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 17:44:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2021-05-21 17:44:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 4230. [2021-05-21 17:44:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4228 states have (on average 2.6634342478713338) internal successors, (11261), 4229 states have internal predecessors, (11261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 11261 transitions. [2021-05-21 17:44:37,979 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 11261 transitions. Word has length 94 [2021-05-21 17:44:37,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:37,979 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 11261 transitions. [2021-05-21 17:44:37,980 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) [2021-05-21 17:44:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 11261 transitions. [2021-05-21 17:44:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:37,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:37,982 INFO L521 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] [2021-05-21 17:44:37,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-21 17:44:37,983 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]=== [2021-05-21 17:44:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:37,983 INFO L82 PathProgramCache]: Analyzing trace with hash -874297101, now seen corresponding path program 47 times [2021-05-21 17:44:37,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:37,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227491590] [2021-05-21 17:44:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:38,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:38,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227491590] [2021-05-21 17:44:38,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227491590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:38,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:38,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:38,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842578391] [2021-05-21 17:44:38,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:38,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:38,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:38,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:38,485 INFO L87 Difference]: Start difference. First operand 4230 states and 11261 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) [2021-05-21 17:44:39,259 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:39,549 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:39,683 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:44:39,859 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:44:40,245 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:40,399 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:40,538 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:40,720 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:40,907 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:41,104 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:41,277 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:41,499 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:41,847 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:44:41,999 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:44:42,130 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:44:42,290 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:44:42,429 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:44:42,601 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:44:42,750 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:42,878 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:44:43,036 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:44:43,170 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:43,325 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:43,334 INFO L93 Difference]: Finished difference Result 9586 states and 24190 transitions. [2021-05-21 17:44:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 17:44:43,335 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 [2021-05-21 17:44:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:43,341 INFO L225 Difference]: With dead ends: 9586 [2021-05-21 17:44:43,341 INFO L226 Difference]: Without dead ends: 9586 [2021-05-21 17:44:43,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4322.6ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 17:44:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9586 states. [2021-05-21 17:44:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9586 to 4206. [2021-05-21 17:44:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 4204 states have (on average 2.66151284490961) internal successors, (11189), 4205 states have internal predecessors, (11189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 11189 transitions. [2021-05-21 17:44:43,421 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 11189 transitions. Word has length 94 [2021-05-21 17:44:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:43,421 INFO L482 AbstractCegarLoop]: Abstraction has 4206 states and 11189 transitions. [2021-05-21 17:44:43,421 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) [2021-05-21 17:44:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 11189 transitions. [2021-05-21 17:44:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:43,425 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:43,425 INFO L521 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] [2021-05-21 17:44:43,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-21 17:44:43,425 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]=== [2021-05-21 17:44:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1318705045, now seen corresponding path program 48 times [2021-05-21 17:44:43,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:43,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866061851] [2021-05-21 17:44:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:43,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:43,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866061851] [2021-05-21 17:44:43,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866061851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:43,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:43,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:43,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285153774] [2021-05-21 17:44:43,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:43,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:43,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:43,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:43,953 INFO L87 Difference]: Start difference. First operand 4206 states and 11189 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) [2021-05-21 17:44:44,754 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:44:45,026 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:44:45,422 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:45,547 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:45,698 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:45,839 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:46,022 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:46,204 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:46,400 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:46,574 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:46,784 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:47,154 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:44:47,293 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:44:47,425 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:44:47,570 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:44:47,713 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:44:47,867 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:44:48,003 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:48,131 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:44:48,275 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:44:48,414 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:48,555 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:48,564 INFO L93 Difference]: Finished difference Result 9641 states and 24311 transitions. [2021-05-21 17:44:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:44:48,565 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 [2021-05-21 17:44:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:48,570 INFO L225 Difference]: With dead ends: 9641 [2021-05-21 17:44:48,570 INFO L226 Difference]: Without dead ends: 9641 [2021-05-21 17:44:48,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4111.8ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:44:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2021-05-21 17:44:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 4194. [2021-05-21 17:44:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 4192 states have (on average 2.660543893129771) internal successors, (11153), 4193 states have internal predecessors, (11153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 11153 transitions. [2021-05-21 17:44:48,624 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 11153 transitions. Word has length 94 [2021-05-21 17:44:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:48,624 INFO L482 AbstractCegarLoop]: Abstraction has 4194 states and 11153 transitions. [2021-05-21 17:44:48,624 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) [2021-05-21 17:44:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 11153 transitions. [2021-05-21 17:44:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:48,627 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:48,627 INFO L521 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] [2021-05-21 17:44:48,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-21 17:44:48,627 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]=== [2021-05-21 17:44:48,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1722381467, now seen corresponding path program 49 times [2021-05-21 17:44:48,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:48,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517695920] [2021-05-21 17:44:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:49,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:49,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517695920] [2021-05-21 17:44:49,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517695920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:49,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:49,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:49,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414387898] [2021-05-21 17:44:49,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:49,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:49,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:49,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:49,154 INFO L87 Difference]: Start difference. First operand 4194 states and 11153 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) [2021-05-21 17:44:50,417 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:44:50,545 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:50,700 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:44:50,863 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:44:51,036 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:51,217 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:44:51,414 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:44:51,587 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:44:51,797 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:44:52,120 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:44:52,251 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:44:52,389 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:44:52,637 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:44:52,787 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:44:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:52,793 INFO L93 Difference]: Finished difference Result 8002 states and 20385 transitions. [2021-05-21 17:44:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 17:44:52,793 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 [2021-05-21 17:44:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:52,798 INFO L225 Difference]: With dead ends: 8002 [2021-05-21 17:44:52,798 INFO L226 Difference]: Without dead ends: 8002 [2021-05-21 17:44:52,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3259.9ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 17:44:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-05-21 17:44:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 4182. [2021-05-21 17:44:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4180 states have (on average 2.659569377990431) internal successors, (11117), 4181 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 11117 transitions. [2021-05-21 17:44:52,846 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 11117 transitions. Word has length 94 [2021-05-21 17:44:52,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:52,846 INFO L482 AbstractCegarLoop]: Abstraction has 4182 states and 11117 transitions. [2021-05-21 17:44:52,846 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) [2021-05-21 17:44:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 11117 transitions. [2021-05-21 17:44:52,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:52,849 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:52,849 INFO L521 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] [2021-05-21 17:44:52,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-21 17:44:52,849 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]=== [2021-05-21 17:44:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:52,849 INFO L82 PathProgramCache]: Analyzing trace with hash 780592243, now seen corresponding path program 50 times [2021-05-21 17:44:52,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:52,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470426978] [2021-05-21 17:44:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:53,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:53,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470426978] [2021-05-21 17:44:53,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470426978] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:53,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:53,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:44:53,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232948222] [2021-05-21 17:44:53,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:44:53,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:44:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:44:53,107 INFO L87 Difference]: Start difference. First operand 4182 states and 11117 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) [2021-05-21 17:44:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:54,027 INFO L93 Difference]: Finished difference Result 5073 states and 12857 transitions. [2021-05-21 17:44:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:44:54,028 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 [2021-05-21 17:44:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:54,032 INFO L225 Difference]: With dead ends: 5073 [2021-05-21 17:44:54,032 INFO L226 Difference]: Without dead ends: 5073 [2021-05-21 17:44:54,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 833.8ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:44:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2021-05-21 17:44:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 4226. [2021-05-21 17:44:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4224 states have (on average 2.656960227272727) internal successors, (11223), 4225 states have internal predecessors, (11223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 11223 transitions. [2021-05-21 17:44:54,072 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 11223 transitions. Word has length 94 [2021-05-21 17:44:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:54,072 INFO L482 AbstractCegarLoop]: Abstraction has 4226 states and 11223 transitions. [2021-05-21 17:44:54,072 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) [2021-05-21 17:44:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 11223 transitions. [2021-05-21 17:44:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:54,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:54,075 INFO L521 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] [2021-05-21 17:44:54,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-21 17:44:54,075 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]=== [2021-05-21 17:44:54,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:54,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1117322871, now seen corresponding path program 51 times [2021-05-21 17:44:54,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:54,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540340977] [2021-05-21 17:44:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:54,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:54,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540340977] [2021-05-21 17:44:54,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540340977] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:54,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:54,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:54,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726114636] [2021-05-21 17:44:54,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:54,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:54,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:54,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:54,530 INFO L87 Difference]: Start difference. First operand 4226 states and 11223 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) [2021-05-21 17:44:55,452 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:44:55,765 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:55,925 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:44:56,109 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:44:56,328 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:44:56,562 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:44:56,708 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:44:56,852 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:44:57,003 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:44:57,132 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:44:57,279 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:44:57,431 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:44:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:44:57,438 INFO L93 Difference]: Finished difference Result 6870 states and 17596 transitions. [2021-05-21 17:44:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:44:57,439 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 [2021-05-21 17:44:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:44:57,444 INFO L225 Difference]: With dead ends: 6870 [2021-05-21 17:44:57,444 INFO L226 Difference]: Without dead ends: 6870 [2021-05-21 17:44:57,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2661.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:44:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2021-05-21 17:44:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 4430. [2021-05-21 17:44:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4428 states have (on average 2.671409214092141) internal successors, (11829), 4429 states have internal predecessors, (11829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:44:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 11829 transitions. [2021-05-21 17:44:57,491 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 11829 transitions. Word has length 94 [2021-05-21 17:44:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:44:57,491 INFO L482 AbstractCegarLoop]: Abstraction has 4430 states and 11829 transitions. [2021-05-21 17:44:57,491 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) [2021-05-21 17:44:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 11829 transitions. [2021-05-21 17:44:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:44:57,494 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:44:57,494 INFO L521 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] [2021-05-21 17:44:57,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-21 17:44:57,494 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]=== [2021-05-21 17:44:57,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:44:57,494 INFO L82 PathProgramCache]: Analyzing trace with hash 982503065, now seen corresponding path program 52 times [2021-05-21 17:44:57,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:44:57,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709339891] [2021-05-21 17:44:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:44:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:44:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:44:57,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:44:57,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709339891] [2021-05-21 17:44:57,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709339891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:44:57,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:44:57,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:44:57,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090997372] [2021-05-21 17:44:57,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:44:57,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:44:57,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:44:57,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:44:57,970 INFO L87 Difference]: Start difference. First operand 4430 states and 11829 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) [2021-05-21 17:44:58,918 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:44:59,110 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:44:59,454 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:44:59,637 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:44:59,825 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:45:00,116 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:45:00,278 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:45:00,464 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:45:00,638 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:45:00,791 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:45:00,956 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:45:01,124 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:45:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:01,130 INFO L93 Difference]: Finished difference Result 7818 states and 19912 transitions. [2021-05-21 17:45:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:01,131 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 [2021-05-21 17:45:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:01,135 INFO L225 Difference]: With dead ends: 7818 [2021-05-21 17:45:01,135 INFO L226 Difference]: Without dead ends: 7818 [2021-05-21 17:45:01,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2877.7ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:01,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2021-05-21 17:45:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 4466. [2021-05-21 17:45:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.674059139784946) internal successors, (11937), 4465 states have internal predecessors, (11937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11937 transitions. [2021-05-21 17:45:01,183 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11937 transitions. Word has length 94 [2021-05-21 17:45:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:01,184 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11937 transitions. [2021-05-21 17:45:01,184 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) [2021-05-21 17:45:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11937 transitions. [2021-05-21 17:45:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:01,187 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:01,187 INFO L521 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] [2021-05-21 17:45:01,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-21 17:45:01,187 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]=== [2021-05-21 17:45:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 692397687, now seen corresponding path program 53 times [2021-05-21 17:45:01,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:01,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50268209] [2021-05-21 17:45:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:01,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:01,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50268209] [2021-05-21 17:45:01,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50268209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:01,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:01,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:01,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215320252] [2021-05-21 17:45:01,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:01,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:01,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:01,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:01,639 INFO L87 Difference]: Start difference. First operand 4466 states and 11937 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) [2021-05-21 17:45:02,629 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:02,826 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:45:03,028 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:45:03,237 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:45:03,595 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:45:03,782 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:45:04,086 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:45:04,274 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:45:04,470 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:45:04,660 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:45:04,879 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:45:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:04,885 INFO L93 Difference]: Finished difference Result 7506 states and 19328 transitions. [2021-05-21 17:45:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:45:04,885 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 [2021-05-21 17:45:04,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:04,890 INFO L225 Difference]: With dead ends: 7506 [2021-05-21 17:45:04,890 INFO L226 Difference]: Without dead ends: 7506 [2021-05-21 17:45:04,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2843.1ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:45:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2021-05-21 17:45:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 4430. [2021-05-21 17:45:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4428 states have (on average 2.671409214092141) internal successors, (11829), 4429 states have internal predecessors, (11829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:04,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 11829 transitions. [2021-05-21 17:45:04,939 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 11829 transitions. Word has length 94 [2021-05-21 17:45:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:04,939 INFO L482 AbstractCegarLoop]: Abstraction has 4430 states and 11829 transitions. [2021-05-21 17:45:04,939 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) [2021-05-21 17:45:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 11829 transitions. [2021-05-21 17:45:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:04,942 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:04,942 INFO L521 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] [2021-05-21 17:45:04,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-21 17:45:04,942 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]=== [2021-05-21 17:45:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash 398173023, now seen corresponding path program 54 times [2021-05-21 17:45:04,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:04,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217266157] [2021-05-21 17:45:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:05,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:05,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217266157] [2021-05-21 17:45:05,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217266157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:05,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:05,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:05,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076730239] [2021-05-21 17:45:05,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:05,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:05,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:05,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:05,378 INFO L87 Difference]: Start difference. First operand 4430 states and 11829 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) [2021-05-21 17:45:06,556 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:45:06,734 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:45:06,928 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:45:07,146 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:45:07,510 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:45:07,641 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:45:07,781 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:45:08,035 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:45:08,186 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:45:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:08,194 INFO L93 Difference]: Finished difference Result 7339 states and 18591 transitions. [2021-05-21 17:45:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:08,194 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 [2021-05-21 17:45:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:08,199 INFO L225 Difference]: With dead ends: 7339 [2021-05-21 17:45:08,199 INFO L226 Difference]: Without dead ends: 7339 [2021-05-21 17:45:08,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2575.1ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2021-05-21 17:45:08,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4434. [2021-05-21 17:45:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6712545126353793) internal successors, (11839), 4433 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11839 transitions. [2021-05-21 17:45:08,249 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11839 transitions. Word has length 94 [2021-05-21 17:45:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:08,249 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11839 transitions. [2021-05-21 17:45:08,249 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) [2021-05-21 17:45:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11839 transitions. [2021-05-21 17:45:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:08,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:08,252 INFO L521 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] [2021-05-21 17:45:08,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-21 17:45:08,252 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]=== [2021-05-21 17:45:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash 338504439, now seen corresponding path program 55 times [2021-05-21 17:45:08,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:08,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410899972] [2021-05-21 17:45:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:08,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:08,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410899972] [2021-05-21 17:45:08,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410899972] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:08,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:08,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:08,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981478979] [2021-05-21 17:45:08,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:08,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:08,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:08,681 INFO L87 Difference]: Start difference. First operand 4434 states and 11839 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) [2021-05-21 17:45:09,889 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:10,048 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:45:10,248 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:45:10,451 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:45:10,842 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:45:10,973 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:45:11,112 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:45:11,362 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:45:11,515 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:45:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:11,522 INFO L93 Difference]: Finished difference Result 7397 states and 18649 transitions. [2021-05-21 17:45:11,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:11,522 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 [2021-05-21 17:45:11,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:11,526 INFO L225 Difference]: With dead ends: 7397 [2021-05-21 17:45:11,526 INFO L226 Difference]: Without dead ends: 7397 [2021-05-21 17:45:11,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2555.5ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2021-05-21 17:45:11,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4436. [2021-05-21 17:45:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 4434 states have (on average 2.671177266576455) internal successors, (11844), 4435 states have internal predecessors, (11844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 11844 transitions. [2021-05-21 17:45:11,575 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 11844 transitions. Word has length 94 [2021-05-21 17:45:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:11,575 INFO L482 AbstractCegarLoop]: Abstraction has 4436 states and 11844 transitions. [2021-05-21 17:45:11,576 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) [2021-05-21 17:45:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 11844 transitions. [2021-05-21 17:45:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:11,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:11,579 INFO L521 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] [2021-05-21 17:45:11,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-21 17:45:11,579 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]=== [2021-05-21 17:45:11,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:11,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2019518185, now seen corresponding path program 56 times [2021-05-21 17:45:11,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:11,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333621869] [2021-05-21 17:45:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:12,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:12,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333621869] [2021-05-21 17:45:12,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333621869] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:12,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:12,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:12,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500321971] [2021-05-21 17:45:12,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:12,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:12,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:12,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:12,025 INFO L87 Difference]: Start difference. First operand 4436 states and 11844 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) [2021-05-21 17:45:13,240 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:13,413 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:45:13,597 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:45:13,779 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:13,978 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:45:14,377 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:45:14,507 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:45:14,645 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:45:14,766 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-05-21 17:45:14,900 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:45:15,037 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:45:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:15,044 INFO L93 Difference]: Finished difference Result 7195 states and 18245 transitions. [2021-05-21 17:45:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:45:15,045 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 [2021-05-21 17:45:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:15,049 INFO L225 Difference]: With dead ends: 7195 [2021-05-21 17:45:15,049 INFO L226 Difference]: Without dead ends: 7195 [2021-05-21 17:45:15,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2740.4ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:45:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2021-05-21 17:45:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 4434. [2021-05-21 17:45:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6712545126353793) internal successors, (11839), 4433 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11839 transitions. [2021-05-21 17:45:15,098 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11839 transitions. Word has length 94 [2021-05-21 17:45:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:15,098 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11839 transitions. [2021-05-21 17:45:15,098 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) [2021-05-21 17:45:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11839 transitions. [2021-05-21 17:45:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:15,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:15,101 INFO L521 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] [2021-05-21 17:45:15,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-21 17:45:15,102 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]=== [2021-05-21 17:45:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:15,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1815885175, now seen corresponding path program 57 times [2021-05-21 17:45:15,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:15,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635585641] [2021-05-21 17:45:15,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:15,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:15,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635585641] [2021-05-21 17:45:15,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635585641] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:15,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:15,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:15,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883231363] [2021-05-21 17:45:15,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:15,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:15,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:15,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:15,533 INFO L87 Difference]: Start difference. First operand 4434 states and 11839 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) [2021-05-21 17:45:16,482 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:16,649 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:45:17,006 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:45:17,190 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:45:17,389 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:45:17,673 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:45:17,835 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:45:18,002 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:45:18,192 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:45:18,351 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:45:18,518 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:45:18,686 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:45:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:18,693 INFO L93 Difference]: Finished difference Result 8764 states and 22230 transitions. [2021-05-21 17:45:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:18,693 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 [2021-05-21 17:45:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:18,698 INFO L225 Difference]: With dead ends: 8764 [2021-05-21 17:45:18,698 INFO L226 Difference]: Without dead ends: 8764 [2021-05-21 17:45:18,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2835.3ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2021-05-21 17:45:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 4482. [2021-05-21 17:45:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.6747767857142857) internal successors, (11983), 4481 states have internal predecessors, (11983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11983 transitions. [2021-05-21 17:45:18,753 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11983 transitions. Word has length 94 [2021-05-21 17:45:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:18,753 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11983 transitions. [2021-05-21 17:45:18,753 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) [2021-05-21 17:45:18,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11983 transitions. [2021-05-21 17:45:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:18,756 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:18,757 INFO L521 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] [2021-05-21 17:45:18,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-21 17:45:18,757 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]=== [2021-05-21 17:45:18,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1525779797, now seen corresponding path program 58 times [2021-05-21 17:45:18,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:18,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25259784] [2021-05-21 17:45:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:19,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:19,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25259784] [2021-05-21 17:45:19,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25259784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:19,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:19,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:19,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575727037] [2021-05-21 17:45:19,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:19,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:19,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:19,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:19,221 INFO L87 Difference]: Start difference. First operand 4482 states and 11983 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) [2021-05-21 17:45:20,155 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:20,335 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:45:20,538 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:45:20,743 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:45:21,099 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:45:21,287 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:45:21,579 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:45:21,766 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:45:21,963 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:45:22,153 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:45:22,339 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:45:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:22,346 INFO L93 Difference]: Finished difference Result 9438 states and 24026 transitions. [2021-05-21 17:45:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:45:22,346 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 [2021-05-21 17:45:22,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:22,353 INFO L225 Difference]: With dead ends: 9438 [2021-05-21 17:45:22,353 INFO L226 Difference]: Without dead ends: 9438 [2021-05-21 17:45:22,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2815.9ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:45:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-05-21 17:45:22,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 4446. [2021-05-21 17:45:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.672142214221422) internal successors, (11875), 4445 states have internal predecessors, (11875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11875 transitions. [2021-05-21 17:45:22,435 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11875 transitions. Word has length 94 [2021-05-21 17:45:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:22,435 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11875 transitions. [2021-05-21 17:45:22,435 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) [2021-05-21 17:45:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11875 transitions. [2021-05-21 17:45:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:22,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:22,438 INFO L521 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] [2021-05-21 17:45:22,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-21 17:45:22,438 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]=== [2021-05-21 17:45:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash -371436355, now seen corresponding path program 59 times [2021-05-21 17:45:22,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:22,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464187130] [2021-05-21 17:45:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:22,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:22,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464187130] [2021-05-21 17:45:22,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464187130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:22,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:22,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:22,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930028593] [2021-05-21 17:45:22,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:22,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:22,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:22,866 INFO L87 Difference]: Start difference. First operand 4446 states and 11875 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) [2021-05-21 17:45:23,641 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-05-21 17:45:23,811 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:24,146 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:24,304 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:45:24,499 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:45:24,712 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:45:24,996 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:45:25,148 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:45:25,300 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:45:25,461 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:45:25,597 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:25,751 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:45:25,908 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:45:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:25,917 INFO L93 Difference]: Finished difference Result 8388 states and 21238 transitions. [2021-05-21 17:45:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:25,917 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 [2021-05-21 17:45:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:25,923 INFO L225 Difference]: With dead ends: 8388 [2021-05-21 17:45:25,923 INFO L226 Difference]: Without dead ends: 8388 [2021-05-21 17:45:25,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2715.7ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8388 states. [2021-05-21 17:45:25,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8388 to 4448. [2021-05-21 17:45:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.672064777327935) internal successors, (11880), 4447 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11880 transitions. [2021-05-21 17:45:25,976 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11880 transitions. Word has length 94 [2021-05-21 17:45:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:25,976 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11880 transitions. [2021-05-21 17:45:25,976 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) [2021-05-21 17:45:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11880 transitions. [2021-05-21 17:45:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:25,979 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:25,979 INFO L521 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] [2021-05-21 17:45:25,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-21 17:45:25,979 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]=== [2021-05-21 17:45:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1397099399, now seen corresponding path program 60 times [2021-05-21 17:45:25,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:25,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692943356] [2021-05-21 17:45:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:26,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:26,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692943356] [2021-05-21 17:45:26,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692943356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:26,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:26,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:26,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171205473] [2021-05-21 17:45:26,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:26,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:26,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:26,425 INFO L87 Difference]: Start difference. First operand 4448 states and 11880 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) [2021-05-21 17:45:27,383 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:27,702 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:27,867 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:45:28,047 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:45:28,214 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:28,410 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:45:28,719 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:45:28,871 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:45:29,038 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:45:29,212 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:45:29,351 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:29,501 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:45:29,654 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:45:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:29,661 INFO L93 Difference]: Finished difference Result 8370 states and 21200 transitions. [2021-05-21 17:45:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:45:29,661 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 [2021-05-21 17:45:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:29,666 INFO L225 Difference]: With dead ends: 8370 [2021-05-21 17:45:29,666 INFO L226 Difference]: Without dead ends: 8370 [2021-05-21 17:45:29,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2915.2ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:45:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-05-21 17:45:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 4446. [2021-05-21 17:45:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.672142214221422) internal successors, (11875), 4445 states have internal predecessors, (11875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11875 transitions. [2021-05-21 17:45:29,716 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11875 transitions. Word has length 94 [2021-05-21 17:45:29,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:29,716 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11875 transitions. [2021-05-21 17:45:29,716 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) [2021-05-21 17:45:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11875 transitions. [2021-05-21 17:45:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:29,719 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:29,719 INFO L521 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] [2021-05-21 17:45:29,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-21 17:45:29,719 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]=== [2021-05-21 17:45:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:29,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2072286407, now seen corresponding path program 61 times [2021-05-21 17:45:29,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:29,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356854417] [2021-05-21 17:45:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:30,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:30,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356854417] [2021-05-21 17:45:30,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356854417] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:30,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:30,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:30,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979797473] [2021-05-21 17:45:30,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:30,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:30,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:30,185 INFO L87 Difference]: Start difference. First operand 4446 states and 11875 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) [2021-05-21 17:45:31,140 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:31,324 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:45:31,512 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-05-21 17:45:31,670 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:45:31,868 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-05-21 17:45:32,233 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-05-21 17:45:32,399 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:32,589 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:45:32,921 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-05-21 17:45:33,102 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-05-21 17:45:33,275 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:45:33,465 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-05-21 17:45:33,661 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:45:33,870 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-05-21 17:45:34,049 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-05-21 17:45:34,237 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:45:34,414 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:34,598 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:45:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:34,607 INFO L93 Difference]: Finished difference Result 8743 states and 22229 transitions. [2021-05-21 17:45:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 17:45:34,608 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 [2021-05-21 17:45:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:34,613 INFO L225 Difference]: With dead ends: 8743 [2021-05-21 17:45:34,613 INFO L226 Difference]: Without dead ends: 8743 [2021-05-21 17:45:34,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4029.6ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 17:45:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2021-05-21 17:45:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 4458. [2021-05-21 17:45:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6730251346499103) internal successors, (11911), 4457 states have internal predecessors, (11911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11911 transitions. [2021-05-21 17:45:34,666 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11911 transitions. Word has length 94 [2021-05-21 17:45:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:34,666 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11911 transitions. [2021-05-21 17:45:34,666 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) [2021-05-21 17:45:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11911 transitions. [2021-05-21 17:45:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:34,669 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:34,669 INFO L521 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] [2021-05-21 17:45:34,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-21 17:45:34,670 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]=== [2021-05-21 17:45:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1184860991, now seen corresponding path program 62 times [2021-05-21 17:45:34,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:34,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982619332] [2021-05-21 17:45:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:35,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:35,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982619332] [2021-05-21 17:45:35,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982619332] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:35,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:35,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:35,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656965179] [2021-05-21 17:45:35,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:35,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:35,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:35,130 INFO L87 Difference]: Start difference. First operand 4458 states and 11911 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) [2021-05-21 17:45:36,068 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:45:36,239 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:45:36,424 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:45:36,752 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:45:36,930 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:45:37,097 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:37,299 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:45:37,614 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-05-21 17:45:37,787 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:45:37,968 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:45:38,140 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:45:38,325 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-05-21 17:45:38,499 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:38,505 INFO L93 Difference]: Finished difference Result 7912 states and 20148 transitions. [2021-05-21 17:45:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:45:38,506 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 [2021-05-21 17:45:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:38,510 INFO L225 Difference]: With dead ends: 7912 [2021-05-21 17:45:38,510 INFO L226 Difference]: Without dead ends: 7912 [2021-05-21 17:45:38,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3083.2ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:45:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-05-21 17:45:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 4434. [2021-05-21 17:45:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6712545126353793) internal successors, (11839), 4433 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11839 transitions. [2021-05-21 17:45:38,560 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11839 transitions. Word has length 94 [2021-05-21 17:45:38,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:38,560 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11839 transitions. [2021-05-21 17:45:38,561 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) [2021-05-21 17:45:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11839 transitions. [2021-05-21 17:45:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:38,563 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:38,564 INFO L521 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] [2021-05-21 17:45:38,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-21 17:45:38,564 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]=== [2021-05-21 17:45:38,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:38,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1162417289, now seen corresponding path program 63 times [2021-05-21 17:45:38,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:38,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834584960] [2021-05-21 17:45:38,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:38,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:38,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834584960] [2021-05-21 17:45:38,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834584960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:38,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:38,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212727243] [2021-05-21 17:45:38,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:38,993 INFO L87 Difference]: Start difference. First operand 4434 states and 11839 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) [2021-05-21 17:45:40,231 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:45:40,417 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:45:40,619 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:45:40,827 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:45:41,434 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-21 17:45:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:41,789 INFO L93 Difference]: Finished difference Result 7486 states and 18942 transitions. [2021-05-21 17:45:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:41,790 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 [2021-05-21 17:45:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:41,795 INFO L225 Difference]: With dead ends: 7486 [2021-05-21 17:45:41,795 INFO L226 Difference]: Without dead ends: 7486 [2021-05-21 17:45:41,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2439.3ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2021-05-21 17:45:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 4446. [2021-05-21 17:45:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-05-21 17:45:41,845 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-05-21 17:45:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:41,845 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-05-21 17:45:41,845 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) [2021-05-21 17:45:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-05-21 17:45:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:41,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:41,848 INFO L521 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] [2021-05-21 17:45:41,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-21 17:45:41,848 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]=== [2021-05-21 17:45:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:41,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1222085873, now seen corresponding path program 64 times [2021-05-21 17:45:41,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:41,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789976365] [2021-05-21 17:45:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:42,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:42,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789976365] [2021-05-21 17:45:42,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789976365] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:42,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:42,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:42,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671597630] [2021-05-21 17:45:42,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:42,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:42,296 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 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) [2021-05-21 17:45:43,457 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:43,621 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:45:43,820 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:45:44,023 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:45:44,658 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-21 17:45:44,891 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:45:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:45,020 INFO L93 Difference]: Finished difference Result 7964 states and 19878 transitions. [2021-05-21 17:45:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:45,020 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 [2021-05-21 17:45:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:45,025 INFO L225 Difference]: With dead ends: 7964 [2021-05-21 17:45:45,025 INFO L226 Difference]: Without dead ends: 7964 [2021-05-21 17:45:45,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2454.3ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2021-05-21 17:45:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 4448. [2021-05-21 17:45:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.670715249662618) internal successors, (11874), 4447 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11874 transitions. [2021-05-21 17:45:45,077 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11874 transitions. Word has length 94 [2021-05-21 17:45:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:45,077 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11874 transitions. [2021-05-21 17:45:45,077 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) [2021-05-21 17:45:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11874 transitions. [2021-05-21 17:45:45,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:45,080 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:45,080 INFO L521 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] [2021-05-21 17:45:45,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-21 17:45:45,080 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]=== [2021-05-21 17:45:45,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:45,080 INFO L82 PathProgramCache]: Analyzing trace with hash 458927873, now seen corresponding path program 65 times [2021-05-21 17:45:45,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:45,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352578631] [2021-05-21 17:45:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:45,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:45,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352578631] [2021-05-21 17:45:45,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352578631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:45,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:45,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:45,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79076781] [2021-05-21 17:45:45,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:45,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:45,543 INFO L87 Difference]: Start difference. First operand 4448 states and 11874 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) [2021-05-21 17:45:46,707 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:46,893 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:45:47,083 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:45:47,263 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:45:47,464 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:45:48,098 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-21 17:45:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:48,454 INFO L93 Difference]: Finished difference Result 7762 states and 19474 transitions. [2021-05-21 17:45:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:45:48,454 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 [2021-05-21 17:45:48,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:48,460 INFO L225 Difference]: With dead ends: 7762 [2021-05-21 17:45:48,460 INFO L226 Difference]: Without dead ends: 7762 [2021-05-21 17:45:48,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2635.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:45:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-05-21 17:45:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 4442. [2021-05-21 17:45:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.670945945945946) internal successors, (11859), 4441 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11859 transitions. [2021-05-21 17:45:48,515 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11859 transitions. Word has length 94 [2021-05-21 17:45:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:48,515 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11859 transitions. [2021-05-21 17:45:48,515 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) [2021-05-21 17:45:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11859 transitions. [2021-05-21 17:45:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:48,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:48,518 INFO L521 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] [2021-05-21 17:45:48,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-21 17:45:48,519 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]=== [2021-05-21 17:45:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:48,519 INFO L82 PathProgramCache]: Analyzing trace with hash -974517769, now seen corresponding path program 66 times [2021-05-21 17:45:48,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:48,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789062839] [2021-05-21 17:45:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:48,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:48,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789062839] [2021-05-21 17:45:48,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789062839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:48,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:48,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:48,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992706102] [2021-05-21 17:45:48,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:48,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:48,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:48,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:48,964 INFO L87 Difference]: Start difference. First operand 4442 states and 11859 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) [2021-05-21 17:45:50,071 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:45:50,233 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:50,401 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:45:50,606 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:45:50,813 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:45:51,334 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-05-21 17:45:51,460 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-21 17:45:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:51,818 INFO L93 Difference]: Finished difference Result 7567 states and 19042 transitions. [2021-05-21 17:45:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:45:51,818 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 [2021-05-21 17:45:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:51,823 INFO L225 Difference]: With dead ends: 7567 [2021-05-21 17:45:51,823 INFO L226 Difference]: Without dead ends: 7567 [2021-05-21 17:45:51,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2468.0ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:45:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2021-05-21 17:45:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 4448. [2021-05-21 17:45:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.670715249662618) internal successors, (11874), 4447 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:51,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11874 transitions. [2021-05-21 17:45:51,872 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11874 transitions. Word has length 94 [2021-05-21 17:45:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:51,872 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11874 transitions. [2021-05-21 17:45:51,872 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) [2021-05-21 17:45:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11874 transitions. [2021-05-21 17:45:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:51,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:51,875 INFO L521 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] [2021-05-21 17:45:51,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-21 17:45:51,876 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]=== [2021-05-21 17:45:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:51,876 INFO L82 PathProgramCache]: Analyzing trace with hash 706495977, now seen corresponding path program 67 times [2021-05-21 17:45:51,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:51,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276356703] [2021-05-21 17:45:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:52,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:52,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276356703] [2021-05-21 17:45:52,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276356703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:52,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:52,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:52,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884457888] [2021-05-21 17:45:52,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:52,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:52,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:52,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:52,323 INFO L87 Difference]: Start difference. First operand 4448 states and 11874 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) [2021-05-21 17:45:53,369 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:45:53,542 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:45:53,716 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:45:53,921 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:45:54,089 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:45:54,295 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:45:54,946 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-21 17:45:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:55,317 INFO L93 Difference]: Finished difference Result 7841 states and 19569 transitions. [2021-05-21 17:45:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:45:55,318 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 [2021-05-21 17:45:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:55,324 INFO L225 Difference]: With dead ends: 7841 [2021-05-21 17:45:55,324 INFO L226 Difference]: Without dead ends: 7841 [2021-05-21 17:45:55,324 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2663.7ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:45:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7841 states. [2021-05-21 17:45:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7841 to 4446. [2021-05-21 17:45:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-05-21 17:45:55,374 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-05-21 17:45:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:55,375 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-05-21 17:45:55,375 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) [2021-05-21 17:45:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-05-21 17:45:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:55,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:55,378 INFO L521 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] [2021-05-21 17:45:55,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-21 17:45:55,378 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]=== [2021-05-21 17:45:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1796789299, now seen corresponding path program 68 times [2021-05-21 17:45:55,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:55,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578431026] [2021-05-21 17:45:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:55,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:55,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578431026] [2021-05-21 17:45:55,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578431026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:55,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:55,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:55,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551665499] [2021-05-21 17:45:55,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:55,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:55,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:55,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:55,868 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 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) [2021-05-21 17:45:56,952 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:45:57,108 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:45:57,275 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:45:57,442 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:45:57,642 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:45:57,811 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:45:58,035 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:45:58,671 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-05-21 17:45:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:45:59,024 INFO L93 Difference]: Finished difference Result 7363 states and 18633 transitions. [2021-05-21 17:45:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:45:59,024 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 [2021-05-21 17:45:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:45:59,029 INFO L225 Difference]: With dead ends: 7363 [2021-05-21 17:45:59,029 INFO L226 Difference]: Without dead ends: 7363 [2021-05-21 17:45:59,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2818.8ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:45:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2021-05-21 17:45:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 4442. [2021-05-21 17:45:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.670945945945946) internal successors, (11859), 4441 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:45:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11859 transitions. [2021-05-21 17:45:59,078 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11859 transitions. Word has length 94 [2021-05-21 17:45:59,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:45:59,078 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11859 transitions. [2021-05-21 17:45:59,078 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) [2021-05-21 17:45:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11859 transitions. [2021-05-21 17:45:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:45:59,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:45:59,081 INFO L521 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] [2021-05-21 17:45:59,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-21 17:45:59,082 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]=== [2021-05-21 17:45:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:45:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1422080281, now seen corresponding path program 69 times [2021-05-21 17:45:59,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:45:59,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706231714] [2021-05-21 17:45:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:45:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:45:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:45:59,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:45:59,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706231714] [2021-05-21 17:45:59,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706231714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:45:59,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:45:59,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:45:59,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600620453] [2021-05-21 17:45:59,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:45:59,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:45:59,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:45:59,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:45:59,510 INFO L87 Difference]: Start difference. First operand 4442 states and 11859 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) [2021-05-21 17:46:00,287 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-05-21 17:46:00,461 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:46:00,627 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:46:00,956 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:46:01,138 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:46:01,325 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:46:01,602 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:01,764 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:46:01,933 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:02,107 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:46:02,262 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:46:02,442 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:46:02,610 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:46:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:02,616 INFO L93 Difference]: Finished difference Result 9126 states and 23201 transitions. [2021-05-21 17:46:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:46:02,616 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 [2021-05-21 17:46:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:02,621 INFO L225 Difference]: With dead ends: 9126 [2021-05-21 17:46:02,622 INFO L226 Difference]: Without dead ends: 9126 [2021-05-21 17:46:02,622 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2825.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:46:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2021-05-21 17:46:02,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 4514. [2021-05-21 17:46:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4512 states have (on average 2.6761968085106385) internal successors, (12075), 4513 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 12075 transitions. [2021-05-21 17:46:02,676 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 12075 transitions. Word has length 94 [2021-05-21 17:46:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:02,676 INFO L482 AbstractCegarLoop]: Abstraction has 4514 states and 12075 transitions. [2021-05-21 17:46:02,676 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) [2021-05-21 17:46:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 12075 transitions. [2021-05-21 17:46:02,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:02,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:02,679 INFO L521 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] [2021-05-21 17:46:02,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-21 17:46:02,679 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]=== [2021-05-21 17:46:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:02,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1131974903, now seen corresponding path program 70 times [2021-05-21 17:46:02,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:02,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820272108] [2021-05-21 17:46:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:03,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:03,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820272108] [2021-05-21 17:46:03,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820272108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:03,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:03,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:03,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682578077] [2021-05-21 17:46:03,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:03,126 INFO L87 Difference]: Start difference. First operand 4514 states and 12075 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) [2021-05-21 17:46:04,103 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:46:04,274 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:46:04,475 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:46:04,696 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:46:05,048 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:46:05,237 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:46:05,551 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:46:05,738 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:46:05,932 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:46:06,121 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:46:06,312 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:46:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:06,318 INFO L93 Difference]: Finished difference Result 9800 states and 24997 transitions. [2021-05-21 17:46:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:46:06,319 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 [2021-05-21 17:46:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:06,327 INFO L225 Difference]: With dead ends: 9800 [2021-05-21 17:46:06,327 INFO L226 Difference]: Without dead ends: 9800 [2021-05-21 17:46:06,327 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2807.6ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:46:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2021-05-21 17:46:06,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 4478. [2021-05-21 17:46:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.673592493297587) internal successors, (11967), 4477 states have internal predecessors, (11967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11967 transitions. [2021-05-21 17:46:06,388 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11967 transitions. Word has length 94 [2021-05-21 17:46:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:06,388 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11967 transitions. [2021-05-21 17:46:06,388 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) [2021-05-21 17:46:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11967 transitions. [2021-05-21 17:46:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:06,391 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:06,391 INFO L521 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] [2021-05-21 17:46:06,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-21 17:46:06,391 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]=== [2021-05-21 17:46:06,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash -765241249, now seen corresponding path program 71 times [2021-05-21 17:46:06,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:06,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655130714] [2021-05-21 17:46:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:06,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:06,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655130714] [2021-05-21 17:46:06,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655130714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:06,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:06,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:06,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083369226] [2021-05-21 17:46:06,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:06,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:06,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:06,843 INFO L87 Difference]: Start difference. First operand 4478 states and 11967 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) [2021-05-21 17:46:07,782 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:46:08,096 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:08,253 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:46:08,442 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:46:08,636 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:46:08,925 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:46:09,075 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:46:09,225 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:46:09,391 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:46:09,525 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:09,678 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:09,833 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:46:09,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:09,843 INFO L93 Difference]: Finished difference Result 9574 states and 24200 transitions. [2021-05-21 17:46:09,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:46:09,843 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 [2021-05-21 17:46:09,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:09,848 INFO L225 Difference]: With dead ends: 9574 [2021-05-21 17:46:09,848 INFO L226 Difference]: Without dead ends: 9574 [2021-05-21 17:46:09,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2719.9ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:46:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9574 states. [2021-05-21 17:46:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9574 to 4480. [2021-05-21 17:46:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4478 states have (on average 2.6735149620366236) internal successors, (11972), 4479 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 11972 transitions. [2021-05-21 17:46:09,904 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 11972 transitions. Word has length 94 [2021-05-21 17:46:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:09,904 INFO L482 AbstractCegarLoop]: Abstraction has 4480 states and 11972 transitions. [2021-05-21 17:46:09,904 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) [2021-05-21 17:46:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 11972 transitions. [2021-05-21 17:46:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:09,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:09,907 INFO L521 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] [2021-05-21 17:46:09,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-21 17:46:09,907 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]=== [2021-05-21 17:46:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:09,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1003294505, now seen corresponding path program 72 times [2021-05-21 17:46:09,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:09,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324974440] [2021-05-21 17:46:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:10,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:10,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324974440] [2021-05-21 17:46:10,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324974440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:10,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:10,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:10,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546184306] [2021-05-21 17:46:10,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:10,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:10,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:10,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:10,358 INFO L87 Difference]: Start difference. First operand 4480 states and 11972 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) [2021-05-21 17:46:11,316 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:46:11,643 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:11,809 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:11,989 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:46:12,156 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:12,355 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:12,681 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:46:12,833 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:46:12,984 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:46:13,144 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:46:13,283 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:13,447 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:13,600 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:46:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:13,607 INFO L93 Difference]: Finished difference Result 9556 states and 24162 transitions. [2021-05-21 17:46:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:46:13,607 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 [2021-05-21 17:46:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:13,613 INFO L225 Difference]: With dead ends: 9556 [2021-05-21 17:46:13,613 INFO L226 Difference]: Without dead ends: 9556 [2021-05-21 17:46:13,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2892.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:46:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9556 states. [2021-05-21 17:46:13,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9556 to 4478. [2021-05-21 17:46:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.673592493297587) internal successors, (11967), 4477 states have internal predecessors, (11967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11967 transitions. [2021-05-21 17:46:13,671 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11967 transitions. Word has length 94 [2021-05-21 17:46:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:13,672 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11967 transitions. [2021-05-21 17:46:13,672 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) [2021-05-21 17:46:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11967 transitions. [2021-05-21 17:46:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:13,675 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:13,675 INFO L521 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] [2021-05-21 17:46:13,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-21 17:46:13,675 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]=== [2021-05-21 17:46:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:13,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1678481513, now seen corresponding path program 73 times [2021-05-21 17:46:13,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:13,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381624117] [2021-05-21 17:46:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:14,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:14,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381624117] [2021-05-21 17:46:14,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381624117] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:14,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:14,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:14,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873209866] [2021-05-21 17:46:14,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:14,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:14,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:14,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:14,154 INFO L87 Difference]: Start difference. First operand 4478 states and 11967 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) [2021-05-21 17:46:15,116 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:46:15,296 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:46:15,510 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:46:15,669 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:46:15,876 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:46:16,259 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:46:16,425 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:16,621 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:46:16,961 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:46:17,145 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:46:17,318 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:46:17,507 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:46:17,688 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:46:17,902 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:46:18,077 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:46:18,276 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:46:18,454 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:18,637 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:46:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:18,647 INFO L93 Difference]: Finished difference Result 11017 states and 27842 transitions. [2021-05-21 17:46:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 17:46:18,647 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 [2021-05-21 17:46:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:18,654 INFO L225 Difference]: With dead ends: 11017 [2021-05-21 17:46:18,654 INFO L226 Difference]: Without dead ends: 11017 [2021-05-21 17:46:18,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4061.6ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 17:46:18,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2021-05-21 17:46:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 4490. [2021-05-21 17:46:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.674465240641711) internal successors, (12003), 4489 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12003 transitions. [2021-05-21 17:46:18,715 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12003 transitions. Word has length 94 [2021-05-21 17:46:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:18,715 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12003 transitions. [2021-05-21 17:46:18,715 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) [2021-05-21 17:46:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12003 transitions. [2021-05-21 17:46:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:18,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:18,718 INFO L521 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] [2021-05-21 17:46:18,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-21 17:46:18,718 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]=== [2021-05-21 17:46:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:18,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1578665885, now seen corresponding path program 74 times [2021-05-21 17:46:18,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:18,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771245277] [2021-05-21 17:46:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:19,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:19,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771245277] [2021-05-21 17:46:19,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771245277] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:19,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:19,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:19,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394680894] [2021-05-21 17:46:19,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:19,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:19,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:19,175 INFO L87 Difference]: Start difference. First operand 4490 states and 12003 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) [2021-05-21 17:46:19,831 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-05-21 17:46:20,169 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:46:20,350 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:46:20,542 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:46:20,907 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:21,086 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:46:21,252 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:21,454 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:21,796 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:46:21,969 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:46:22,149 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:46:22,322 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:22,492 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:46:22,666 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:22,672 INFO L93 Difference]: Finished difference Result 10186 states and 25761 transitions. [2021-05-21 17:46:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:46:22,673 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 [2021-05-21 17:46:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:22,678 INFO L225 Difference]: With dead ends: 10186 [2021-05-21 17:46:22,678 INFO L226 Difference]: Without dead ends: 10186 [2021-05-21 17:46:22,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3048.8ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:46:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2021-05-21 17:46:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 4466. [2021-05-21 17:46:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.672715053763441) internal successors, (11931), 4465 states have internal predecessors, (11931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11931 transitions. [2021-05-21 17:46:22,737 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11931 transitions. Word has length 94 [2021-05-21 17:46:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:22,737 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11931 transitions. [2021-05-21 17:46:22,737 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) [2021-05-21 17:46:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11931 transitions. [2021-05-21 17:46:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:22,740 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:22,741 INFO L521 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] [2021-05-21 17:46:22,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-21 17:46:22,741 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]=== [2021-05-21 17:46:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1551607467, now seen corresponding path program 75 times [2021-05-21 17:46:22,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:22,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245265316] [2021-05-21 17:46:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:23,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:23,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245265316] [2021-05-21 17:46:23,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245265316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:23,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:23,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:23,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687038879] [2021-05-21 17:46:23,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:23,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:23,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:23,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:23,167 INFO L87 Difference]: Start difference. First operand 4466 states and 11931 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) [2021-05-21 17:46:24,306 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:24,454 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:24,614 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:46:24,809 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:46:25,010 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:46:25,293 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:46:25,436 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:46:25,575 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:46:25,721 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:46:25,842 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:25,982 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:46:26,130 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:46:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:26,139 INFO L93 Difference]: Finished difference Result 8748 states and 22178 transitions. [2021-05-21 17:46:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:46:26,140 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 [2021-05-21 17:46:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:26,146 INFO L225 Difference]: With dead ends: 8748 [2021-05-21 17:46:26,146 INFO L226 Difference]: Without dead ends: 8748 [2021-05-21 17:46:26,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2594.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:46:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states. [2021-05-21 17:46:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8748 to 4472. [2021-05-21 17:46:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 2.67248322147651) internal successors, (11946), 4471 states have internal predecessors, (11946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:26,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 11946 transitions. [2021-05-21 17:46:26,201 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 11946 transitions. Word has length 94 [2021-05-21 17:46:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:26,202 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 11946 transitions. [2021-05-21 17:46:26,202 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) [2021-05-21 17:46:26,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 11946 transitions. [2021-05-21 17:46:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:26,205 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:26,205 INFO L521 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] [2021-05-21 17:46:26,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-21 17:46:26,205 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]=== [2021-05-21 17:46:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:26,205 INFO L82 PathProgramCache]: Analyzing trace with hash 216928287, now seen corresponding path program 76 times [2021-05-21 17:46:26,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:26,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788551222] [2021-05-21 17:46:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:26,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:26,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788551222] [2021-05-21 17:46:26,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788551222] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:26,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:26,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:26,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177635016] [2021-05-21 17:46:26,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:26,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:26,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:26,692 INFO L87 Difference]: Start difference. First operand 4472 states and 11946 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) [2021-05-21 17:46:27,773 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:27,919 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:28,086 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:28,269 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:46:28,435 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:28,637 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:28,952 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:46:29,097 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:46:29,234 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:46:29,380 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:46:29,500 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:29,641 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:46:29,788 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:46:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:29,797 INFO L93 Difference]: Finished difference Result 9022 states and 22705 transitions. [2021-05-21 17:46:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:46:29,797 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 [2021-05-21 17:46:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:29,803 INFO L225 Difference]: With dead ends: 9022 [2021-05-21 17:46:29,803 INFO L226 Difference]: Without dead ends: 9022 [2021-05-21 17:46:29,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2773.7ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:46:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2021-05-21 17:46:29,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 4470. [2021-05-21 17:46:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.6725604297224708) internal successors, (11941), 4469 states have internal predecessors, (11941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11941 transitions. [2021-05-21 17:46:29,857 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11941 transitions. Word has length 94 [2021-05-21 17:46:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:29,857 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11941 transitions. [2021-05-21 17:46:29,858 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) [2021-05-21 17:46:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11941 transitions. [2021-05-21 17:46:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:29,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:29,861 INFO L521 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] [2021-05-21 17:46:29,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-21 17:46:29,861 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]=== [2021-05-21 17:46:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash -318323883, now seen corresponding path program 77 times [2021-05-21 17:46:29,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:29,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757834832] [2021-05-21 17:46:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:30,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:30,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757834832] [2021-05-21 17:46:30,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757834832] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:30,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:30,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:30,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349320016] [2021-05-21 17:46:30,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:30,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:30,324 INFO L87 Difference]: Start difference. First operand 4470 states and 11941 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) [2021-05-21 17:46:31,396 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:31,542 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:46:31,699 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:31,859 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:32,050 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:46:32,216 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:32,422 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:32,711 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:46:32,848 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:46:32,987 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:46:33,145 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:46:33,275 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:33,415 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:46:33,559 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:46:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:33,565 INFO L93 Difference]: Finished difference Result 8772 states and 22231 transitions. [2021-05-21 17:46:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:46:33,566 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 [2021-05-21 17:46:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:33,571 INFO L225 Difference]: With dead ends: 8772 [2021-05-21 17:46:33,572 INFO L226 Difference]: Without dead ends: 8772 [2021-05-21 17:46:33,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2953.2ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:46:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2021-05-21 17:46:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 4466. [2021-05-21 17:46:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.672715053763441) internal successors, (11931), 4465 states have internal predecessors, (11931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11931 transitions. [2021-05-21 17:46:33,630 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11931 transitions. Word has length 94 [2021-05-21 17:46:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:33,631 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11931 transitions. [2021-05-21 17:46:33,631 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) [2021-05-21 17:46:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11931 transitions. [2021-05-21 17:46:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:33,634 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:33,634 INFO L521 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] [2021-05-21 17:46:33,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-21 17:46:33,634 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]=== [2021-05-21 17:46:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1478343731, now seen corresponding path program 78 times [2021-05-21 17:46:33,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:33,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690199553] [2021-05-21 17:46:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:34,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:34,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690199553] [2021-05-21 17:46:34,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690199553] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:34,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:34,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:34,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601928768] [2021-05-21 17:46:34,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:34,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:34,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:34,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:34,132 INFO L87 Difference]: Start difference. First operand 4466 states and 11931 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) [2021-05-21 17:46:35,084 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:35,256 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:46:35,438 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:46:35,633 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:46:35,794 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:46:36,004 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:46:36,344 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:36,541 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:46:36,709 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:36,916 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:46:37,249 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:46:37,435 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:46:37,594 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:46:37,800 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:46:37,965 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:46:38,163 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:46:38,325 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:46:38,514 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:46:38,677 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:38,867 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:46:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:38,876 INFO L93 Difference]: Finished difference Result 9134 states and 23253 transitions. [2021-05-21 17:46:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:46:38,877 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 [2021-05-21 17:46:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:38,882 INFO L225 Difference]: With dead ends: 9134 [2021-05-21 17:46:38,882 INFO L226 Difference]: Without dead ends: 9134 [2021-05-21 17:46:38,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4284.7ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:46:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2021-05-21 17:46:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 4502. [2021-05-21 17:46:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 2.675333333333333) internal successors, (12039), 4501 states have internal predecessors, (12039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 12039 transitions. [2021-05-21 17:46:38,937 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 12039 transitions. Word has length 94 [2021-05-21 17:46:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:38,937 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 12039 transitions. [2021-05-21 17:46:38,937 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) [2021-05-21 17:46:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 12039 transitions. [2021-05-21 17:46:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:38,940 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:38,941 INFO L521 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] [2021-05-21 17:46:38,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-21 17:46:38,941 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]=== [2021-05-21 17:46:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:38,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1778803667, now seen corresponding path program 79 times [2021-05-21 17:46:38,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:38,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409994048] [2021-05-21 17:46:38,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:39,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:39,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409994048] [2021-05-21 17:46:39,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409994048] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:39,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:39,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:39,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85370695] [2021-05-21 17:46:39,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:39,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:39,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:39,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:39,446 INFO L87 Difference]: Start difference. First operand 4502 states and 12039 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) [2021-05-21 17:46:40,388 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:40,557 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:46:40,725 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:46:40,914 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:46:41,267 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:41,425 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:41,616 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:46:41,785 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:41,995 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:42,355 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:46:42,522 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:46:42,680 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:46:42,854 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:46:43,019 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:46:43,200 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:46:43,362 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:43,516 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:46:43,689 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:46:43,853 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:44,022 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:44,032 INFO L93 Difference]: Finished difference Result 9403 states and 23713 transitions. [2021-05-21 17:46:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:46:44,032 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 [2021-05-21 17:46:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:44,038 INFO L225 Difference]: With dead ends: 9403 [2021-05-21 17:46:44,039 INFO L226 Difference]: Without dead ends: 9403 [2021-05-21 17:46:44,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4160.5ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:46:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9403 states. [2021-05-21 17:46:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9403 to 4490. [2021-05-21 17:46:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.674465240641711) internal successors, (12003), 4489 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12003 transitions. [2021-05-21 17:46:44,099 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12003 transitions. Word has length 94 [2021-05-21 17:46:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:44,099 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12003 transitions. [2021-05-21 17:46:44,099 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) [2021-05-21 17:46:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12003 transitions. [2021-05-21 17:46:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:44,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:44,102 INFO L521 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] [2021-05-21 17:46:44,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-21 17:46:44,103 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]=== [2021-05-21 17:46:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:44,103 INFO L82 PathProgramCache]: Analyzing trace with hash 551134327, now seen corresponding path program 80 times [2021-05-21 17:46:44,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:44,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154851784] [2021-05-21 17:46:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:44,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:44,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154851784] [2021-05-21 17:46:44,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154851784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:44,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:44,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:44,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505352401] [2021-05-21 17:46:44,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:44,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:44,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:44,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:44,593 INFO L87 Difference]: Start difference. First operand 4490 states and 12003 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) [2021-05-21 17:46:45,531 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:45,702 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:46:46,043 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:46:46,200 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:46,363 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:46:46,576 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:46:46,745 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:46:46,949 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:47,262 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:46:47,421 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:46:47,588 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:46:47,732 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:46:47,889 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:46:48,050 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:46:48,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:48,056 INFO L93 Difference]: Finished difference Result 8230 states and 20966 transitions. [2021-05-21 17:46:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:46:48,056 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 [2021-05-21 17:46:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:48,062 INFO L225 Difference]: With dead ends: 8230 [2021-05-21 17:46:48,062 INFO L226 Difference]: Without dead ends: 8230 [2021-05-21 17:46:48,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3128.3ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:46:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2021-05-21 17:46:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 4442. [2021-05-21 17:46:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.670945945945946) internal successors, (11859), 4441 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11859 transitions. [2021-05-21 17:46:48,116 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11859 transitions. Word has length 94 [2021-05-21 17:46:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:48,117 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11859 transitions. [2021-05-21 17:46:48,117 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) [2021-05-21 17:46:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11859 transitions. [2021-05-21 17:46:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:48,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:48,120 INFO L521 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] [2021-05-21 17:46:48,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-21 17:46:48,120 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]=== [2021-05-21 17:46:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1575412215, now seen corresponding path program 81 times [2021-05-21 17:46:48,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:48,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265619216] [2021-05-21 17:46:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:48,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:48,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265619216] [2021-05-21 17:46:48,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265619216] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:48,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:48,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:48,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371470262] [2021-05-21 17:46:48,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:48,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:48,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:48,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:48,573 INFO L87 Difference]: Start difference. First operand 4442 states and 11859 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) [2021-05-21 17:46:49,737 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:46:49,924 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:46:50,122 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:46:50,327 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:46:50,894 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-05-21 17:46:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:51,213 INFO L93 Difference]: Finished difference Result 7633 states and 19293 transitions. [2021-05-21 17:46:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:46:51,214 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 [2021-05-21 17:46:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:51,218 INFO L225 Difference]: With dead ends: 7633 [2021-05-21 17:46:51,218 INFO L226 Difference]: Without dead ends: 7633 [2021-05-21 17:46:51,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2373.1ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:46:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7633 states. [2021-05-21 17:46:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7633 to 4458. [2021-05-21 17:46:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6703321364452424) internal successors, (11899), 4457 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11899 transitions. [2021-05-21 17:46:51,271 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11899 transitions. Word has length 94 [2021-05-21 17:46:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:51,272 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11899 transitions. [2021-05-21 17:46:51,272 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) [2021-05-21 17:46:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11899 transitions. [2021-05-21 17:46:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:51,275 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:51,275 INFO L521 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] [2021-05-21 17:46:51,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-21 17:46:51,275 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]=== [2021-05-21 17:46:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:51,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1515743631, now seen corresponding path program 82 times [2021-05-21 17:46:51,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:51,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372331261] [2021-05-21 17:46:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:51,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:51,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372331261] [2021-05-21 17:46:51,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372331261] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:51,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:51,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:51,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164506404] [2021-05-21 17:46:51,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:51,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:51,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:51,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:51,710 INFO L87 Difference]: Start difference. First operand 4458 states and 11899 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) [2021-05-21 17:46:52,884 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:53,069 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:46:53,275 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:46:53,484 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:46:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:54,403 INFO L93 Difference]: Finished difference Result 8111 states and 20229 transitions. [2021-05-21 17:46:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:46:54,403 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 [2021-05-21 17:46:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:54,409 INFO L225 Difference]: With dead ends: 8111 [2021-05-21 17:46:54,409 INFO L226 Difference]: Without dead ends: 8111 [2021-05-21 17:46:54,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2377.2ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:46:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8111 states. [2021-05-21 17:46:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8111 to 4460. [2021-05-21 17:46:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:54,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-05-21 17:46:54,466 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-05-21 17:46:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:54,466 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-05-21 17:46:54,466 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) [2021-05-21 17:46:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-05-21 17:46:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:54,469 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:54,469 INFO L521 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] [2021-05-21 17:46:54,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-21 17:46:54,469 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]=== [2021-05-21 17:46:54,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:54,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1098209919, now seen corresponding path program 83 times [2021-05-21 17:46:54,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:54,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334178825] [2021-05-21 17:46:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:54,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:54,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334178825] [2021-05-21 17:46:54,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334178825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:54,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:54,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:54,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654227690] [2021-05-21 17:46:54,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:54,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:54,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:54,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:54,928 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 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) [2021-05-21 17:46:56,112 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:56,288 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:46:56,479 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:46:56,646 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:46:56,847 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:46:57,675 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-05-21 17:46:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:46:57,797 INFO L93 Difference]: Finished difference Result 7909 states and 19825 transitions. [2021-05-21 17:46:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:46:57,798 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 [2021-05-21 17:46:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:46:57,802 INFO L225 Difference]: With dead ends: 7909 [2021-05-21 17:46:57,802 INFO L226 Difference]: Without dead ends: 7909 [2021-05-21 17:46:57,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2580.0ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:46:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2021-05-21 17:46:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 4454. [2021-05-21 17:46:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:46:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-05-21 17:46:57,853 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-05-21 17:46:57,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:46:57,853 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-05-21 17:46:57,853 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) [2021-05-21 17:46:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-05-21 17:46:57,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:46:57,856 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:46:57,856 INFO L521 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] [2021-05-21 17:46:57,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-21 17:46:57,856 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]=== [2021-05-21 17:46:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:46:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1763311735, now seen corresponding path program 84 times [2021-05-21 17:46:57,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:46:57,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103925395] [2021-05-21 17:46:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:46:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:46:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:46:58,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:46:58,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103925395] [2021-05-21 17:46:58,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103925395] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:46:58,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:46:58,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:46:58,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453856465] [2021-05-21 17:46:58,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:46:58,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:46:58,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:46:58,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:46:58,290 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 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) [2021-05-21 17:46:59,286 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:46:59,456 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:46:59,627 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:46:59,857 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:47:00,060 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:47:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:00,963 INFO L93 Difference]: Finished difference Result 8183 states and 20388 transitions. [2021-05-21 17:47:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:47:00,963 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 [2021-05-21 17:47:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:00,969 INFO L225 Difference]: With dead ends: 8183 [2021-05-21 17:47:00,969 INFO L226 Difference]: Without dead ends: 8183 [2021-05-21 17:47:00,969 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2395.3ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:47:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8183 states. [2021-05-21 17:47:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8183 to 4460. [2021-05-21 17:47:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-05-21 17:47:01,027 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-05-21 17:47:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:01,028 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-05-21 17:47:01,028 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) [2021-05-21 17:47:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-05-21 17:47:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:01,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:01,031 INFO L521 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] [2021-05-21 17:47:01,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-21 17:47:01,031 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]=== [2021-05-21 17:47:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash -850641815, now seen corresponding path program 85 times [2021-05-21 17:47:01,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:01,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567674850] [2021-05-21 17:47:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:01,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:01,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567674850] [2021-05-21 17:47:01,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567674850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:01,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:01,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:01,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261572421] [2021-05-21 17:47:01,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:01,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:01,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:01,497 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 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) [2021-05-21 17:47:02,497 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:02,664 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:02,843 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:03,038 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:03,209 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:03,415 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:04,364 INFO L93 Difference]: Finished difference Result 8457 states and 20915 transitions. [2021-05-21 17:47:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:47:04,365 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 [2021-05-21 17:47:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:04,369 INFO L225 Difference]: With dead ends: 8457 [2021-05-21 17:47:04,369 INFO L226 Difference]: Without dead ends: 8457 [2021-05-21 17:47:04,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2572.1ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:47:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8457 states. [2021-05-21 17:47:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8457 to 4458. [2021-05-21 17:47:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6703321364452424) internal successors, (11899), 4457 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11899 transitions. [2021-05-21 17:47:04,423 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11899 transitions. Word has length 94 [2021-05-21 17:47:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:04,423 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11899 transitions. [2021-05-21 17:47:04,423 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) [2021-05-21 17:47:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11899 transitions. [2021-05-21 17:47:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:04,426 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:04,426 INFO L521 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] [2021-05-21 17:47:04,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-21 17:47:04,426 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]=== [2021-05-21 17:47:04,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:04,427 INFO L82 PathProgramCache]: Analyzing trace with hash 239651507, now seen corresponding path program 86 times [2021-05-21 17:47:04,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:04,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204583513] [2021-05-21 17:47:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:04,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:04,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204583513] [2021-05-21 17:47:04,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204583513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:04,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:04,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:04,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217169627] [2021-05-21 17:47:04,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:04,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:04,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:04,888 INFO L87 Difference]: Start difference. First operand 4458 states and 11899 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) [2021-05-21 17:47:05,893 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:06,053 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:47:06,222 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:47:06,396 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:06,610 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:06,782 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:06,992 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:07,908 INFO L93 Difference]: Finished difference Result 7979 states and 19979 transitions. [2021-05-21 17:47:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:47:07,908 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 [2021-05-21 17:47:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:07,914 INFO L225 Difference]: With dead ends: 7979 [2021-05-21 17:47:07,914 INFO L226 Difference]: Without dead ends: 7979 [2021-05-21 17:47:07,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2721.5ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:47:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2021-05-21 17:47:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 4446. [2021-05-21 17:47:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-05-21 17:47:07,967 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-05-21 17:47:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:07,968 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-05-21 17:47:07,968 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) [2021-05-21 17:47:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-05-21 17:47:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:07,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:07,972 INFO L521 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] [2021-05-21 17:47:07,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-21 17:47:07,973 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]=== [2021-05-21 17:47:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:07,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1779482551, now seen corresponding path program 87 times [2021-05-21 17:47:07,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:07,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317969465] [2021-05-21 17:47:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:08,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:08,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317969465] [2021-05-21 17:47:08,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317969465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:08,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:08,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311126041] [2021-05-21 17:47:08,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:08,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:08,407 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 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) [2021-05-21 17:47:09,466 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:09,636 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:09,810 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:47:10,011 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:47:10,216 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:47:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:11,126 INFO L93 Difference]: Finished difference Result 7688 states and 19318 transitions. [2021-05-21 17:47:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:47:11,126 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 [2021-05-21 17:47:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:11,131 INFO L225 Difference]: With dead ends: 7688 [2021-05-21 17:47:11,131 INFO L226 Difference]: Without dead ends: 7688 [2021-05-21 17:47:11,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2397.1ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:47:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2021-05-21 17:47:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 4454. [2021-05-21 17:47:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-05-21 17:47:11,180 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-05-21 17:47:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:11,180 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-05-21 17:47:11,180 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) [2021-05-21 17:47:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-05-21 17:47:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:11,183 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:11,183 INFO L521 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] [2021-05-21 17:47:11,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-21 17:47:11,183 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]=== [2021-05-21 17:47:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:11,183 INFO L82 PathProgramCache]: Analyzing trace with hash -834470999, now seen corresponding path program 88 times [2021-05-21 17:47:11,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:11,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065052183] [2021-05-21 17:47:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:11,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:11,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065052183] [2021-05-21 17:47:11,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065052183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:11,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:11,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:11,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894535736] [2021-05-21 17:47:11,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:11,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:11,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:11,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:11,631 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 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) [2021-05-21 17:47:12,623 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:12,790 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:12,966 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:13,172 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:13,343 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:13,549 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:14,461 INFO L93 Difference]: Finished difference Result 7962 states and 19845 transitions. [2021-05-21 17:47:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:47:14,462 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 [2021-05-21 17:47:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:14,467 INFO L225 Difference]: With dead ends: 7962 [2021-05-21 17:47:14,467 INFO L226 Difference]: Without dead ends: 7962 [2021-05-21 17:47:14,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2557.5ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:47:14,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2021-05-21 17:47:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 4452. [2021-05-21 17:47:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4450 states have (on average 2.670561797752809) internal successors, (11884), 4451 states have internal predecessors, (11884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 11884 transitions. [2021-05-21 17:47:14,521 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 11884 transitions. Word has length 94 [2021-05-21 17:47:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:14,521 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 11884 transitions. [2021-05-21 17:47:14,521 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) [2021-05-21 17:47:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 11884 transitions. [2021-05-21 17:47:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:14,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:14,525 INFO L521 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] [2021-05-21 17:47:14,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-21 17:47:14,525 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]=== [2021-05-21 17:47:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash 255822323, now seen corresponding path program 89 times [2021-05-21 17:47:14,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:14,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057958603] [2021-05-21 17:47:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:14,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:14,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057958603] [2021-05-21 17:47:14,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057958603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:14,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:14,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:14,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608671724] [2021-05-21 17:47:14,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:14,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:14,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:14,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:14,991 INFO L87 Difference]: Start difference. First operand 4452 states and 11884 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) [2021-05-21 17:47:16,064 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:16,227 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:47:16,399 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:47:16,576 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:16,780 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:16,950 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:17,165 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:17,801 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-05-21 17:47:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:18,125 INFO L93 Difference]: Finished difference Result 8028 states and 19989 transitions. [2021-05-21 17:47:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:47:18,125 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 [2021-05-21 17:47:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:18,130 INFO L225 Difference]: With dead ends: 8028 [2021-05-21 17:47:18,130 INFO L226 Difference]: Without dead ends: 8028 [2021-05-21 17:47:18,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2777.7ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:47:18,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-05-21 17:47:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 4448. [2021-05-21 17:47:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.670715249662618) internal successors, (11874), 4447 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11874 transitions. [2021-05-21 17:47:18,181 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11874 transitions. Word has length 94 [2021-05-21 17:47:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:18,181 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11874 transitions. [2021-05-21 17:47:18,181 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) [2021-05-21 17:47:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11874 transitions. [2021-05-21 17:47:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:18,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:18,184 INFO L521 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] [2021-05-21 17:47:18,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-21 17:47:18,184 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]=== [2021-05-21 17:47:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:18,184 INFO L82 PathProgramCache]: Analyzing trace with hash -592317295, now seen corresponding path program 90 times [2021-05-21 17:47:18,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:18,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574395479] [2021-05-21 17:47:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:18,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:18,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574395479] [2021-05-21 17:47:18,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574395479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:18,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:18,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:18,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179975056] [2021-05-21 17:47:18,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:18,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:18,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:18,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:18,682 INFO L87 Difference]: Start difference. First operand 4448 states and 11874 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) [2021-05-21 17:47:19,765 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:47:19,922 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:47:20,076 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:47:20,241 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:47:20,425 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:20,627 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:20,798 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:21,009 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:21,932 INFO L93 Difference]: Finished difference Result 7480 states and 18899 transitions. [2021-05-21 17:47:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:47:21,932 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 [2021-05-21 17:47:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:21,938 INFO L225 Difference]: With dead ends: 7480 [2021-05-21 17:47:21,938 INFO L226 Difference]: Without dead ends: 7480 [2021-05-21 17:47:21,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2911.7ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:47:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-05-21 17:47:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 4446. [2021-05-21 17:47:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-05-21 17:47:21,990 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-05-21 17:47:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:21,990 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-05-21 17:47:21,990 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) [2021-05-21 17:47:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-05-21 17:47:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:21,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:21,994 INFO L521 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] [2021-05-21 17:47:21,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-21 17:47:21,994 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]=== [2021-05-21 17:47:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:21,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1969874521, now seen corresponding path program 91 times [2021-05-21 17:47:21,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:21,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860635210] [2021-05-21 17:47:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:22,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:22,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860635210] [2021-05-21 17:47:22,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860635210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:22,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:22,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:22,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995925715] [2021-05-21 17:47:22,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:22,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:22,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:22,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:22,447 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 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) [2021-05-21 17:47:23,421 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:47:23,590 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:47:23,928 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:47:24,112 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:47:24,302 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:47:24,602 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:24,769 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:47:24,938 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:25,116 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:47:25,272 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:47:25,441 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:47:25,616 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:47:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:25,622 INFO L93 Difference]: Finished difference Result 9484 states and 24162 transitions. [2021-05-21 17:47:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:47:25,623 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 [2021-05-21 17:47:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:25,629 INFO L225 Difference]: With dead ends: 9484 [2021-05-21 17:47:25,629 INFO L226 Difference]: Without dead ends: 9484 [2021-05-21 17:47:25,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2847.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:47:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9484 states. [2021-05-21 17:47:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9484 to 4530. [2021-05-21 17:47:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4530 states, 4528 states have (on average 2.676899293286219) internal successors, (12121), 4529 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4530 states to 4530 states and 12121 transitions. [2021-05-21 17:47:25,684 INFO L78 Accepts]: Start accepts. Automaton has 4530 states and 12121 transitions. Word has length 94 [2021-05-21 17:47:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:25,684 INFO L482 AbstractCegarLoop]: Abstraction has 4530 states and 12121 transitions. [2021-05-21 17:47:25,684 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) [2021-05-21 17:47:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4530 states and 12121 transitions. [2021-05-21 17:47:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:25,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:25,688 INFO L521 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] [2021-05-21 17:47:25,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-21 17:47:25,688 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]=== [2021-05-21 17:47:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1679769143, now seen corresponding path program 92 times [2021-05-21 17:47:25,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:25,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310026719] [2021-05-21 17:47:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:26,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:26,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310026719] [2021-05-21 17:47:26,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310026719] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:26,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:26,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:26,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568015308] [2021-05-21 17:47:26,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:26,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:26,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:26,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:26,149 INFO L87 Difference]: Start difference. First operand 4530 states and 12121 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) [2021-05-21 17:47:27,148 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:47:27,321 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:47:27,526 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:47:27,737 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:47:28,099 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:47:28,292 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:47:28,606 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:47:28,797 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:47:29,022 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:47:29,214 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:47:29,407 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:47:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:29,413 INFO L93 Difference]: Finished difference Result 10158 states and 25958 transitions. [2021-05-21 17:47:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:47:29,413 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 [2021-05-21 17:47:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:29,420 INFO L225 Difference]: With dead ends: 10158 [2021-05-21 17:47:29,420 INFO L226 Difference]: Without dead ends: 10158 [2021-05-21 17:47:29,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2900.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:47:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2021-05-21 17:47:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 4494. [2021-05-21 17:47:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.6743098842386464) internal successors, (12013), 4493 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12013 transitions. [2021-05-21 17:47:29,476 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12013 transitions. Word has length 94 [2021-05-21 17:47:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:29,476 INFO L482 AbstractCegarLoop]: Abstraction has 4494 states and 12013 transitions. [2021-05-21 17:47:29,476 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) [2021-05-21 17:47:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12013 transitions. [2021-05-21 17:47:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:29,479 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:29,480 INFO L521 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] [2021-05-21 17:47:29,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-21 17:47:29,480 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]=== [2021-05-21 17:47:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:29,480 INFO L82 PathProgramCache]: Analyzing trace with hash -217447009, now seen corresponding path program 93 times [2021-05-21 17:47:29,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:29,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42604284] [2021-05-21 17:47:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:29,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:29,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:29,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42604284] [2021-05-21 17:47:29,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42604284] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:29,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:29,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:29,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398676155] [2021-05-21 17:47:29,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:29,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:29,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:29,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:29,917 INFO L87 Difference]: Start difference. First operand 4494 states and 12013 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) [2021-05-21 17:47:30,876 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:47:31,202 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:31,357 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:47:31,548 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:47:31,743 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:47:32,028 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:47:32,182 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:47:32,335 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:47:32,495 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:47:32,630 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:32,785 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:47:32,944 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:47:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:32,953 INFO L93 Difference]: Finished difference Result 9932 states and 25161 transitions. [2021-05-21 17:47:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:47:32,953 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 [2021-05-21 17:47:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:32,960 INFO L225 Difference]: With dead ends: 9932 [2021-05-21 17:47:32,960 INFO L226 Difference]: Without dead ends: 9932 [2021-05-21 17:47:32,960 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2726.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:47:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2021-05-21 17:47:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 4496. [2021-05-21 17:47:33,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4494 states have (on average 2.6742323097463285) internal successors, (12018), 4495 states have internal predecessors, (12018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 12018 transitions. [2021-05-21 17:47:33,019 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 12018 transitions. Word has length 94 [2021-05-21 17:47:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:33,020 INFO L482 AbstractCegarLoop]: Abstraction has 4496 states and 12018 transitions. [2021-05-21 17:47:33,020 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) [2021-05-21 17:47:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 12018 transitions. [2021-05-21 17:47:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:33,023 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:33,023 INFO L521 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] [2021-05-21 17:47:33,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-21 17:47:33,023 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]=== [2021-05-21 17:47:33,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:33,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1551088745, now seen corresponding path program 94 times [2021-05-21 17:47:33,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:33,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359455573] [2021-05-21 17:47:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:33,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:33,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359455573] [2021-05-21 17:47:33,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359455573] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:33,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:33,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:33,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152606835] [2021-05-21 17:47:33,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:33,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:33,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:33,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:33,487 INFO L87 Difference]: Start difference. First operand 4496 states and 12018 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) [2021-05-21 17:47:34,478 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:47:34,815 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:34,985 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:35,171 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:35,342 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:35,561 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:35,891 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:47:36,049 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:47:36,206 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:47:36,370 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:47:36,512 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:36,666 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:47:36,826 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:47:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:36,833 INFO L93 Difference]: Finished difference Result 9914 states and 25123 transitions. [2021-05-21 17:47:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:47:36,833 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 [2021-05-21 17:47:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:36,840 INFO L225 Difference]: With dead ends: 9914 [2021-05-21 17:47:36,840 INFO L226 Difference]: Without dead ends: 9914 [2021-05-21 17:47:36,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2947.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:47:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9914 states. [2021-05-21 17:47:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 4494. [2021-05-21 17:47:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.6743098842386464) internal successors, (12013), 4493 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12013 transitions. [2021-05-21 17:47:36,899 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12013 transitions. Word has length 94 [2021-05-21 17:47:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:36,900 INFO L482 AbstractCegarLoop]: Abstraction has 4494 states and 12013 transitions. [2021-05-21 17:47:36,900 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) [2021-05-21 17:47:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12013 transitions. [2021-05-21 17:47:36,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:36,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:36,903 INFO L521 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] [2021-05-21 17:47:36,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-21 17:47:36,903 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]=== [2021-05-21 17:47:36,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:36,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2068691543, now seen corresponding path program 95 times [2021-05-21 17:47:36,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:36,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499994073] [2021-05-21 17:47:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:37,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:37,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499994073] [2021-05-21 17:47:37,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499994073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:37,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:37,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:37,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596780135] [2021-05-21 17:47:37,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:37,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:37,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:37,390 INFO L87 Difference]: Start difference. First operand 4494 states and 12013 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) [2021-05-21 17:47:38,417 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:47:38,601 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:47:38,799 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:47:38,961 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:47:39,173 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:47:39,563 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:47:39,734 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:39,933 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:47:40,310 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:47:40,495 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:47:40,671 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:47:40,865 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:47:41,048 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:47:41,244 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:47:41,421 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:47:41,609 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:47:41,789 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:41,973 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:47:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:41,983 INFO L93 Difference]: Finished difference Result 11375 states and 28803 transitions. [2021-05-21 17:47:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 17:47:41,983 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 [2021-05-21 17:47:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:41,990 INFO L225 Difference]: With dead ends: 11375 [2021-05-21 17:47:41,990 INFO L226 Difference]: Without dead ends: 11375 [2021-05-21 17:47:41,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4109.2ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 17:47:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11375 states. [2021-05-21 17:47:42,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11375 to 4506. [2021-05-21 17:47:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6751776198934283) internal successors, (12049), 4505 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12049 transitions. [2021-05-21 17:47:42,051 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12049 transitions. Word has length 94 [2021-05-21 17:47:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:42,051 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12049 transitions. [2021-05-21 17:47:42,051 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) [2021-05-21 17:47:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12049 transitions. [2021-05-21 17:47:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:42,054 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:42,054 INFO L521 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] [2021-05-21 17:47:42,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-21 17:47:42,054 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]=== [2021-05-21 17:47:42,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1030871645, now seen corresponding path program 96 times [2021-05-21 17:47:42,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:42,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367192913] [2021-05-21 17:47:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:42,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:42,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367192913] [2021-05-21 17:47:42,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367192913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:42,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:42,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:42,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149314060] [2021-05-21 17:47:42,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:42,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:42,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:42,534 INFO L87 Difference]: Start difference. First operand 4506 states and 12049 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) [2021-05-21 17:47:43,492 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:47:43,673 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:47:43,865 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:47:44,220 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:44,403 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:44,589 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:44,794 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:45,133 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:47:45,311 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:47:45,495 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:47:45,655 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:45,830 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:47:46,008 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:46,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:46,015 INFO L93 Difference]: Finished difference Result 10544 states and 26722 transitions. [2021-05-21 17:47:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:47:46,015 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 [2021-05-21 17:47:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:46,022 INFO L225 Difference]: With dead ends: 10544 [2021-05-21 17:47:46,022 INFO L226 Difference]: Without dead ends: 10544 [2021-05-21 17:47:46,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3111.0ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:47:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10544 states. [2021-05-21 17:47:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10544 to 4482. [2021-05-21 17:47:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.6734375) internal successors, (11977), 4481 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11977 transitions. [2021-05-21 17:47:46,087 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11977 transitions. Word has length 94 [2021-05-21 17:47:46,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:46,087 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11977 transitions. [2021-05-21 17:47:46,087 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) [2021-05-21 17:47:46,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11977 transitions. [2021-05-21 17:47:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:46,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:46,090 INFO L521 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] [2021-05-21 17:47:46,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-21 17:47:46,091 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]=== [2021-05-21 17:47:46,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:46,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1003813227, now seen corresponding path program 97 times [2021-05-21 17:47:46,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:46,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103291997] [2021-05-21 17:47:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:46,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:46,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103291997] [2021-05-21 17:47:46,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103291997] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:46,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:46,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:46,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184560886] [2021-05-21 17:47:46,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:46,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:46,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:46,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:46,527 INFO L87 Difference]: Start difference. First operand 4482 states and 11977 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) [2021-05-21 17:47:47,667 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:47,819 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:47,983 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:47:48,180 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:47:48,385 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:47:48,675 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:47:48,819 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:47:48,961 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:47:49,134 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:47:49,255 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:49,396 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:47:49,543 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:47:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:49,552 INFO L93 Difference]: Finished difference Result 10048 states and 25447 transitions. [2021-05-21 17:47:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:47:49,552 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 [2021-05-21 17:47:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:49,558 INFO L225 Difference]: With dead ends: 10048 [2021-05-21 17:47:49,559 INFO L226 Difference]: Without dead ends: 10048 [2021-05-21 17:47:49,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2676.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:47:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10048 states. [2021-05-21 17:47:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10048 to 4488. [2021-05-21 17:47:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4486 states have (on average 2.673205528310299) internal successors, (11992), 4487 states have internal predecessors, (11992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 11992 transitions. [2021-05-21 17:47:49,616 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 11992 transitions. Word has length 94 [2021-05-21 17:47:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:49,616 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 11992 transitions. [2021-05-21 17:47:49,616 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) [2021-05-21 17:47:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 11992 transitions. [2021-05-21 17:47:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:49,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:49,619 INFO L521 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] [2021-05-21 17:47:49,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-21 17:47:49,620 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]=== [2021-05-21 17:47:49,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash 764722527, now seen corresponding path program 98 times [2021-05-21 17:47:49,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:49,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861945695] [2021-05-21 17:47:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:50,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:50,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861945695] [2021-05-21 17:47:50,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861945695] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:50,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:50,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:50,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806321055] [2021-05-21 17:47:50,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:50,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:50,062 INFO L87 Difference]: Start difference. First operand 4488 states and 11992 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) [2021-05-21 17:47:51,185 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:51,332 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:51,501 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:51,686 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:51,854 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:52,055 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:52,368 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:47:52,513 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:47:52,654 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:47:52,804 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:47:52,928 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:53,072 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:47:53,222 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:47:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:53,231 INFO L93 Difference]: Finished difference Result 10322 states and 25974 transitions. [2021-05-21 17:47:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:47:53,231 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 [2021-05-21 17:47:53,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:53,239 INFO L225 Difference]: With dead ends: 10322 [2021-05-21 17:47:53,239 INFO L226 Difference]: Without dead ends: 10322 [2021-05-21 17:47:53,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2815.5ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:47:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-05-21 17:47:53,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 4486. [2021-05-21 17:47:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4484 states have (on average 2.6732827832292596) internal successors, (11987), 4485 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 11987 transitions. [2021-05-21 17:47:53,301 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 11987 transitions. Word has length 94 [2021-05-21 17:47:53,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:53,301 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 11987 transitions. [2021-05-21 17:47:53,301 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) [2021-05-21 17:47:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 11987 transitions. [2021-05-21 17:47:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:53,304 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:53,304 INFO L521 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] [2021-05-21 17:47:53,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-21 17:47:53,305 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]=== [2021-05-21 17:47:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:53,305 INFO L82 PathProgramCache]: Analyzing trace with hash 229470357, now seen corresponding path program 99 times [2021-05-21 17:47:53,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:53,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000806731] [2021-05-21 17:47:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:53,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:53,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000806731] [2021-05-21 17:47:53,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000806731] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:53,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:53,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:53,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677407394] [2021-05-21 17:47:53,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:53,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:53,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:53,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:53,786 INFO L87 Difference]: Start difference. First operand 4486 states and 11987 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) [2021-05-21 17:47:54,925 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:55,075 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:47:55,236 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:47:55,399 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:47:55,593 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:47:55,773 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:47:55,981 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:47:56,303 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:47:56,446 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:47:56,585 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:47:56,731 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:47:56,858 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:47:56,995 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:47:57,142 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:47:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:47:57,148 INFO L93 Difference]: Finished difference Result 10072 states and 25500 transitions. [2021-05-21 17:47:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:47:57,149 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 [2021-05-21 17:47:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:47:57,155 INFO L225 Difference]: With dead ends: 10072 [2021-05-21 17:47:57,155 INFO L226 Difference]: Without dead ends: 10072 [2021-05-21 17:47:57,156 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2964.9ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:47:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2021-05-21 17:47:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 4482. [2021-05-21 17:47:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.6734375) internal successors, (11977), 4481 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:47:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11977 transitions. [2021-05-21 17:47:57,220 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11977 transitions. Word has length 94 [2021-05-21 17:47:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:47:57,220 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11977 transitions. [2021-05-21 17:47:57,220 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) [2021-05-21 17:47:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11977 transitions. [2021-05-21 17:47:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:47:57,223 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:47:57,224 INFO L521 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] [2021-05-21 17:47:57,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-21 17:47:57,224 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]=== [2021-05-21 17:47:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:47:57,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2026137971, now seen corresponding path program 100 times [2021-05-21 17:47:57,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:47:57,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100162560] [2021-05-21 17:47:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:47:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:47:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:47:57,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:47:57,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100162560] [2021-05-21 17:47:57,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100162560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:47:57,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:47:57,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:47:57,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885337488] [2021-05-21 17:47:57,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:47:57,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:47:57,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:47:57,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:47:57,735 INFO L87 Difference]: Start difference. First operand 4482 states and 11977 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) [2021-05-21 17:47:58,698 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:47:58,874 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:47:59,050 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:47:59,250 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:47:59,414 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:47:59,630 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:47:59,970 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:00,189 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:48:00,359 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:00,567 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:48:00,920 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:48:01,104 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:48:01,263 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:48:01,455 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:48:01,624 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:48:01,823 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:48:01,986 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:48:02,177 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:48:02,343 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:02,543 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:48:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:02,553 INFO L93 Difference]: Finished difference Result 11726 states and 29715 transitions. [2021-05-21 17:48:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:48:02,553 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 [2021-05-21 17:48:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:02,560 INFO L225 Difference]: With dead ends: 11726 [2021-05-21 17:48:02,560 INFO L226 Difference]: Without dead ends: 11726 [2021-05-21 17:48:02,560 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4342.9ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:48:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11726 states. [2021-05-21 17:48:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11726 to 4518. [2021-05-21 17:48:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4516 states have (on average 2.676040744021258) internal successors, (12085), 4517 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 12085 transitions. [2021-05-21 17:48:02,625 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 12085 transitions. Word has length 94 [2021-05-21 17:48:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:02,625 INFO L482 AbstractCegarLoop]: Abstraction has 4518 states and 12085 transitions. [2021-05-21 17:48:02,625 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) [2021-05-21 17:48:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 12085 transitions. [2021-05-21 17:48:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:02,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:02,628 INFO L521 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] [2021-05-21 17:48:02,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-21 17:48:02,628 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]=== [2021-05-21 17:48:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1231009427, now seen corresponding path program 101 times [2021-05-21 17:48:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:02,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512253169] [2021-05-21 17:48:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:03,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:03,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512253169] [2021-05-21 17:48:03,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512253169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:03,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:03,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:03,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967180039] [2021-05-21 17:48:03,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:03,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:03,107 INFO L87 Difference]: Start difference. First operand 4518 states and 12085 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) [2021-05-21 17:48:03,889 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-05-21 17:48:04,055 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:04,233 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:48:04,409 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:48:04,632 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:48:04,996 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:05,166 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:05,359 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:05,534 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:05,751 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:06,104 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:48:06,275 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:48:06,437 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:48:06,615 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:48:06,789 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:48:06,988 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:48:07,152 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:07,311 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:48:07,492 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:48:07,658 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:07,833 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:07,843 INFO L93 Difference]: Finished difference Result 11995 states and 30175 transitions. [2021-05-21 17:48:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:48:07,843 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 [2021-05-21 17:48:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:07,851 INFO L225 Difference]: With dead ends: 11995 [2021-05-21 17:48:07,851 INFO L226 Difference]: Without dead ends: 11995 [2021-05-21 17:48:07,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4283.6ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:48:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11995 states. [2021-05-21 17:48:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11995 to 4506. [2021-05-21 17:48:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6751776198934283) internal successors, (12049), 4505 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12049 transitions. [2021-05-21 17:48:07,919 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12049 transitions. Word has length 94 [2021-05-21 17:48:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:07,920 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12049 transitions. [2021-05-21 17:48:07,920 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) [2021-05-21 17:48:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12049 transitions. [2021-05-21 17:48:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:07,923 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:07,923 INFO L521 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] [2021-05-21 17:48:07,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-21 17:48:07,923 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]=== [2021-05-21 17:48:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:07,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1098928567, now seen corresponding path program 102 times [2021-05-21 17:48:07,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:07,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310918179] [2021-05-21 17:48:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:08,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:08,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310918179] [2021-05-21 17:48:08,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310918179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:08,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:08,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:08,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817279131] [2021-05-21 17:48:08,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:08,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:08,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:08,403 INFO L87 Difference]: Start difference. First operand 4506 states and 12049 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) [2021-05-21 17:48:09,077 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-05-21 17:48:09,229 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-05-21 17:48:09,402 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:09,577 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:48:09,955 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:10,115 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:10,282 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:10,471 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:10,640 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:10,844 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:11,173 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:48:11,330 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:48:11,510 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:48:11,655 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:11,811 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:48:11,970 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:11,976 INFO L93 Difference]: Finished difference Result 10822 states and 27428 transitions. [2021-05-21 17:48:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:48:11,977 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 [2021-05-21 17:48:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:11,983 INFO L225 Difference]: With dead ends: 10822 [2021-05-21 17:48:11,983 INFO L226 Difference]: Without dead ends: 10822 [2021-05-21 17:48:11,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3176.5ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:48:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2021-05-21 17:48:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 4458. [2021-05-21 17:48:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6716786355475763) internal successors, (11905), 4457 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11905 transitions. [2021-05-21 17:48:12,043 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11905 transitions. Word has length 94 [2021-05-21 17:48:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:12,043 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11905 transitions. [2021-05-21 17:48:12,043 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) [2021-05-21 17:48:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11905 transitions. [2021-05-21 17:48:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:12,046 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:12,046 INFO L521 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] [2021-05-21 17:48:12,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-21 17:48:12,046 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]=== [2021-05-21 17:48:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1740223437, now seen corresponding path program 103 times [2021-05-21 17:48:12,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:12,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207717558] [2021-05-21 17:48:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:12,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:12,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207717558] [2021-05-21 17:48:12,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207717558] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:12,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:12,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:12,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470468050] [2021-05-21 17:48:12,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:12,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:12,475 INFO L87 Difference]: Start difference. First operand 4458 states and 11905 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) [2021-05-21 17:48:13,611 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:13,774 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:13,939 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:48:14,143 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:48:14,346 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:48:14,901 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:48:15,037 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:48:15,277 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:48:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:15,423 INFO L93 Difference]: Finished difference Result 9030 states and 22918 transitions. [2021-05-21 17:48:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:48:15,424 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 [2021-05-21 17:48:15,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:15,430 INFO L225 Difference]: With dead ends: 9030 [2021-05-21 17:48:15,430 INFO L226 Difference]: Without dead ends: 9030 [2021-05-21 17:48:15,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2522.4ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:48:15,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9030 states. [2021-05-21 17:48:15,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9030 to 4466. [2021-05-21 17:48:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.6713709677419355) internal successors, (11925), 4465 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11925 transitions. [2021-05-21 17:48:15,486 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11925 transitions. Word has length 94 [2021-05-21 17:48:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:15,486 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11925 transitions. [2021-05-21 17:48:15,486 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) [2021-05-21 17:48:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11925 transitions. [2021-05-21 17:48:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:15,489 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:15,489 INFO L521 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] [2021-05-21 17:48:15,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-21 17:48:15,489 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]=== [2021-05-21 17:48:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:15,489 INFO L82 PathProgramCache]: Analyzing trace with hash 28312317, now seen corresponding path program 104 times [2021-05-21 17:48:15,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:15,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303718234] [2021-05-21 17:48:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:15,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:15,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303718234] [2021-05-21 17:48:15,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303718234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:15,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:15,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:15,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277050211] [2021-05-21 17:48:15,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:15,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:15,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:15,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:15,955 INFO L87 Difference]: Start difference. First operand 4466 states and 11925 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) [2021-05-21 17:48:17,086 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:17,252 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:17,431 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:17,626 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:17,797 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:18,028 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:18,618 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:48:18,751 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:48:18,986 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:48:19,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:19,130 INFO L93 Difference]: Finished difference Result 9304 states and 23445 transitions. [2021-05-21 17:48:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:48:19,130 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 [2021-05-21 17:48:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:19,136 INFO L225 Difference]: With dead ends: 9304 [2021-05-21 17:48:19,136 INFO L226 Difference]: Without dead ends: 9304 [2021-05-21 17:48:19,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2734.2ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:48:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2021-05-21 17:48:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 4464. [2021-05-21 17:48:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4462 states have (on average 2.6714477812640074) internal successors, (11920), 4463 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 11920 transitions. [2021-05-21 17:48:19,190 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 11920 transitions. Word has length 94 [2021-05-21 17:48:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:19,191 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 11920 transitions. [2021-05-21 17:48:19,191 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) [2021-05-21 17:48:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 11920 transitions. [2021-05-21 17:48:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:19,194 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:19,194 INFO L521 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] [2021-05-21 17:48:19,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-21 17:48:19,194 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]=== [2021-05-21 17:48:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:19,194 INFO L82 PathProgramCache]: Analyzing trace with hash -506939853, now seen corresponding path program 105 times [2021-05-21 17:48:19,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:19,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407801801] [2021-05-21 17:48:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:19,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:19,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407801801] [2021-05-21 17:48:19,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407801801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:19,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:19,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:19,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390361438] [2021-05-21 17:48:19,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:19,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:19,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:19,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:19,654 INFO L87 Difference]: Start difference. First operand 4464 states and 11920 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) [2021-05-21 17:48:20,717 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:20,869 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:21,032 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:21,200 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:21,394 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:21,561 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:21,768 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:22,320 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:48:22,453 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:48:22,574 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-05-21 17:48:22,701 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:48:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:22,844 INFO L93 Difference]: Finished difference Result 9370 states and 23589 transitions. [2021-05-21 17:48:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:48:22,844 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 [2021-05-21 17:48:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:22,849 INFO L225 Difference]: With dead ends: 9370 [2021-05-21 17:48:22,849 INFO L226 Difference]: Without dead ends: 9370 [2021-05-21 17:48:22,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2846.5ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:48:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9370 states. [2021-05-21 17:48:22,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9370 to 4460. [2021-05-21 17:48:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.671601615074024) internal successors, (11910), 4459 states have internal predecessors, (11910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11910 transitions. [2021-05-21 17:48:22,904 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11910 transitions. Word has length 94 [2021-05-21 17:48:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:22,904 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11910 transitions. [2021-05-21 17:48:22,904 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) [2021-05-21 17:48:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11910 transitions. [2021-05-21 17:48:22,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:22,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:22,907 INFO L521 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] [2021-05-21 17:48:22,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-21 17:48:22,907 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]=== [2021-05-21 17:48:22,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1696554189, now seen corresponding path program 106 times [2021-05-21 17:48:22,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:22,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600898752] [2021-05-21 17:48:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:23,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:23,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600898752] [2021-05-21 17:48:23,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600898752] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:23,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:23,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:23,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924582152] [2021-05-21 17:48:23,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:23,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:23,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:23,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:23,380 INFO L87 Difference]: Start difference. First operand 4460 states and 11910 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) [2021-05-21 17:48:24,497 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:48:24,656 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:24,796 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:24,956 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:25,131 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:25,330 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:25,498 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:25,704 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:26,255 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:48:26,387 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:48:26,622 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:48:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:26,759 INFO L93 Difference]: Finished difference Result 9072 states and 23009 transitions. [2021-05-21 17:48:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:48:26,759 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 [2021-05-21 17:48:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:26,766 INFO L225 Difference]: With dead ends: 9072 [2021-05-21 17:48:26,766 INFO L226 Difference]: Without dead ends: 9072 [2021-05-21 17:48:26,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3006.1ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:48:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2021-05-21 17:48:26,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4458. [2021-05-21 17:48:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6716786355475763) internal successors, (11905), 4457 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11905 transitions. [2021-05-21 17:48:26,843 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11905 transitions. Word has length 94 [2021-05-21 17:48:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:26,843 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11905 transitions. [2021-05-21 17:48:26,843 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) [2021-05-21 17:48:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11905 transitions. [2021-05-21 17:48:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:26,846 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:26,846 INFO L521 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] [2021-05-21 17:48:26,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-21 17:48:26,846 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]=== [2021-05-21 17:48:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1287215983, now seen corresponding path program 107 times [2021-05-21 17:48:26,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:26,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487609704] [2021-05-21 17:48:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:27,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:27,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487609704] [2021-05-21 17:48:27,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487609704] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:27,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:27,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:27,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609754748] [2021-05-21 17:48:27,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:27,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:27,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:27,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:27,335 INFO L87 Difference]: Start difference. First operand 4458 states and 11905 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) [2021-05-21 17:48:28,139 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:28,294 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:28,428 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:48:28,597 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:48:28,777 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:48:28,975 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:48:29,146 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:48:29,358 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:48:29,674 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:29,843 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:30,074 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:48:30,245 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:30,453 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:48:30,794 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:48:30,977 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:48:31,120 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:48:31,310 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:48:31,476 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:48:31,674 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:48:31,821 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:48:32,010 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:48:32,159 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:32,344 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:48:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:32,353 INFO L93 Difference]: Finished difference Result 9505 states and 24221 transitions. [2021-05-21 17:48:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:48:32,354 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 [2021-05-21 17:48:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:32,359 INFO L225 Difference]: With dead ends: 9505 [2021-05-21 17:48:32,359 INFO L226 Difference]: Without dead ends: 9505 [2021-05-21 17:48:32,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4501.0ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:48:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9505 states. [2021-05-21 17:48:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9505 to 4506. [2021-05-21 17:48:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6751776198934283) internal successors, (12049), 4505 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12049 transitions. [2021-05-21 17:48:32,413 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12049 transitions. Word has length 94 [2021-05-21 17:48:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:32,414 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12049 transitions. [2021-05-21 17:48:32,414 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) [2021-05-21 17:48:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12049 transitions. [2021-05-21 17:48:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:32,417 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:32,417 INFO L521 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] [2021-05-21 17:48:32,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-21 17:48:32,417 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]=== [2021-05-21 17:48:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash -249396085, now seen corresponding path program 108 times [2021-05-21 17:48:32,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:32,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061258206] [2021-05-21 17:48:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:32,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:32,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061258206] [2021-05-21 17:48:32,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061258206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:32,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:32,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:32,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512077541] [2021-05-21 17:48:32,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:32,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:32,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:32,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:32,902 INFO L87 Difference]: Start difference. First operand 4506 states and 12049 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) [2021-05-21 17:48:33,706 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:33,862 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:33,994 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:48:34,163 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:48:34,342 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:48:34,542 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:48:34,896 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:35,065 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:35,245 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:35,443 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:35,617 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:35,865 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:36,223 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:48:36,392 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:48:36,538 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:48:36,714 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:48:36,867 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:48:37,051 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:48:37,214 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:37,355 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:48:37,530 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:48:37,678 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:37,848 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:37,858 INFO L93 Difference]: Finished difference Result 9774 states and 24681 transitions. [2021-05-21 17:48:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:48:37,858 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 [2021-05-21 17:48:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:37,865 INFO L225 Difference]: With dead ends: 9774 [2021-05-21 17:48:37,865 INFO L226 Difference]: Without dead ends: 9774 [2021-05-21 17:48:37,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4398.8ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:48:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2021-05-21 17:48:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 4494. [2021-05-21 17:48:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.6743098842386464) internal successors, (12013), 4493 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12013 transitions. [2021-05-21 17:48:37,927 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12013 transitions. Word has length 94 [2021-05-21 17:48:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:37,927 INFO L482 AbstractCegarLoop]: Abstraction has 4494 states and 12013 transitions. [2021-05-21 17:48:37,927 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) [2021-05-21 17:48:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12013 transitions. [2021-05-21 17:48:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:37,930 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:37,930 INFO L521 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] [2021-05-21 17:48:37,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-21 17:48:37,930 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]=== [2021-05-21 17:48:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:37,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2080541909, now seen corresponding path program 109 times [2021-05-21 17:48:37,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:37,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591976630] [2021-05-21 17:48:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:38,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:38,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591976630] [2021-05-21 17:48:38,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591976630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:38,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:38,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:38,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144583102] [2021-05-21 17:48:38,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:38,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:38,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:38,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:38,431 INFO L87 Difference]: Start difference. First operand 4494 states and 12013 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) [2021-05-21 17:48:39,210 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:39,363 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:39,496 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:48:39,669 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:48:40,068 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:40,208 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:40,383 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:40,560 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:40,753 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:40,922 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:41,129 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:41,467 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:48:41,620 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:48:41,764 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:48:41,922 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:48:42,073 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:48:42,239 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:48:42,387 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:42,527 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:48:42,697 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:48:42,843 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:42,996 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:43,005 INFO L93 Difference]: Finished difference Result 9818 states and 24779 transitions. [2021-05-21 17:48:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 17:48:43,005 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 [2021-05-21 17:48:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:43,011 INFO L225 Difference]: With dead ends: 9818 [2021-05-21 17:48:43,011 INFO L226 Difference]: Without dead ends: 9818 [2021-05-21 17:48:43,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4111.4ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 17:48:43,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2021-05-21 17:48:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 4470. [2021-05-21 17:48:43,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.6725604297224708) internal successors, (11941), 4469 states have internal predecessors, (11941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11941 transitions. [2021-05-21 17:48:43,067 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11941 transitions. Word has length 94 [2021-05-21 17:48:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:43,067 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11941 transitions. [2021-05-21 17:48:43,067 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) [2021-05-21 17:48:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11941 transitions. [2021-05-21 17:48:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:43,070 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:43,070 INFO L521 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] [2021-05-21 17:48:43,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-21 17:48:43,071 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]=== [2021-05-21 17:48:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -21423241, now seen corresponding path program 110 times [2021-05-21 17:48:43,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:43,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350845173] [2021-05-21 17:48:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:43,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:43,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350845173] [2021-05-21 17:48:43,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350845173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:43,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:43,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:43,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837885719] [2021-05-21 17:48:43,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:43,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:43,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:43,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:43,552 INFO L87 Difference]: Start difference. First operand 4470 states and 11941 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) [2021-05-21 17:48:44,353 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:44,507 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:48:44,864 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:48:45,013 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:48:45,155 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:45,326 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:48:45,503 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:48:45,701 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:48:45,875 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:48:46,087 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:46,418 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:48:46,565 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:48:46,720 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:48:46,855 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:48:47,000 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:48:47,165 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:48:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:47,171 INFO L93 Difference]: Finished difference Result 8422 states and 21447 transitions. [2021-05-21 17:48:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:48:47,172 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 [2021-05-21 17:48:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:47,177 INFO L225 Difference]: With dead ends: 8422 [2021-05-21 17:48:47,177 INFO L226 Difference]: Without dead ends: 8422 [2021-05-21 17:48:47,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3188.3ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:48:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8422 states. [2021-05-21 17:48:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8422 to 4446. [2021-05-21 17:48:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-05-21 17:48:47,233 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-05-21 17:48:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:47,233 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-05-21 17:48:47,233 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) [2021-05-21 17:48:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-05-21 17:48:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:47,236 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:47,236 INFO L521 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] [2021-05-21 17:48:47,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-21 17:48:47,236 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]=== [2021-05-21 17:48:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash -508184993, now seen corresponding path program 111 times [2021-05-21 17:48:47,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:47,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280662579] [2021-05-21 17:48:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:47,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:47,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280662579] [2021-05-21 17:48:47,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280662579] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:47,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:47,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:47,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352389639] [2021-05-21 17:48:47,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:47,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:47,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:47,684 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 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) [2021-05-21 17:48:48,686 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-05-21 17:48:48,832 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:48:49,021 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:48:49,233 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:48:49,439 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:48:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:50,249 INFO L93 Difference]: Finished difference Result 7068 states and 18066 transitions. [2021-05-21 17:48:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:48:50,249 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 [2021-05-21 17:48:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:50,254 INFO L225 Difference]: With dead ends: 7068 [2021-05-21 17:48:50,254 INFO L226 Difference]: Without dead ends: 7068 [2021-05-21 17:48:50,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2312.9ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:48:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-05-21 17:48:50,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 4466. [2021-05-21 17:48:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.67002688172043) internal successors, (11919), 4465 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11919 transitions. [2021-05-21 17:48:50,303 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11919 transitions. Word has length 94 [2021-05-21 17:48:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:50,303 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11919 transitions. [2021-05-21 17:48:50,303 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) [2021-05-21 17:48:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11919 transitions. [2021-05-21 17:48:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:50,306 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:50,306 INFO L521 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] [2021-05-21 17:48:50,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-21 17:48:50,306 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]=== [2021-05-21 17:48:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash -567853577, now seen corresponding path program 112 times [2021-05-21 17:48:50,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:50,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965014470] [2021-05-21 17:48:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:50,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:50,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965014470] [2021-05-21 17:48:50,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965014470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:50,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:50,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:50,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740299439] [2021-05-21 17:48:50,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:50,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:50,746 INFO L87 Difference]: Start difference. First operand 4466 states and 11919 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) [2021-05-21 17:48:51,903 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:52,076 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:48:52,282 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:48:52,491 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:48:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:53,332 INFO L93 Difference]: Finished difference Result 7546 states and 19002 transitions. [2021-05-21 17:48:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:48:53,332 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 [2021-05-21 17:48:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:53,338 INFO L225 Difference]: With dead ends: 7546 [2021-05-21 17:48:53,338 INFO L226 Difference]: Without dead ends: 7546 [2021-05-21 17:48:53,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2293.7ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:48:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7546 states. [2021-05-21 17:48:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7546 to 4468. [2021-05-21 17:48:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 2.6699507389162562) internal successors, (11924), 4467 states have internal predecessors, (11924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 11924 transitions. [2021-05-21 17:48:53,390 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 11924 transitions. Word has length 94 [2021-05-21 17:48:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:53,390 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 11924 transitions. [2021-05-21 17:48:53,390 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) [2021-05-21 17:48:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 11924 transitions. [2021-05-21 17:48:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:53,393 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:53,394 INFO L521 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] [2021-05-21 17:48:53,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-21 17:48:53,394 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]=== [2021-05-21 17:48:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1113160169, now seen corresponding path program 113 times [2021-05-21 17:48:53,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:53,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789605107] [2021-05-21 17:48:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:53,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:53,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789605107] [2021-05-21 17:48:53,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789605107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:53,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:53,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:53,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665331756] [2021-05-21 17:48:53,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:53,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:53,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:53,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:53,867 INFO L87 Difference]: Start difference. First operand 4468 states and 11924 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) [2021-05-21 17:48:54,873 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-05-21 17:48:55,039 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:55,218 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:48:55,411 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:48:55,581 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:48:55,785 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:48:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:56,656 INFO L93 Difference]: Finished difference Result 7344 states and 18598 transitions. [2021-05-21 17:48:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:48:56,657 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 [2021-05-21 17:48:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:56,661 INFO L225 Difference]: With dead ends: 7344 [2021-05-21 17:48:56,661 INFO L226 Difference]: Without dead ends: 7344 [2021-05-21 17:48:56,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2523.6ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:48:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7344 states. [2021-05-21 17:48:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7344 to 4462. [2021-05-21 17:48:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.6701793721973095) internal successors, (11909), 4461 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11909 transitions. [2021-05-21 17:48:56,709 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11909 transitions. Word has length 94 [2021-05-21 17:48:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:56,709 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11909 transitions. [2021-05-21 17:48:56,709 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) [2021-05-21 17:48:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11909 transitions. [2021-05-21 17:48:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:56,712 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:56,712 INFO L521 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] [2021-05-21 17:48:56,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-21 17:48:56,713 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]=== [2021-05-21 17:48:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:56,713 INFO L82 PathProgramCache]: Analyzing trace with hash -320285473, now seen corresponding path program 114 times [2021-05-21 17:48:56,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:56,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898505817] [2021-05-21 17:48:56,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:48:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:48:57,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:48:57,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898505817] [2021-05-21 17:48:57,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898505817] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:48:57,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:48:57,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:48:57,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041236498] [2021-05-21 17:48:57,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:48:57,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:48:57,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:48:57,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:48:57,153 INFO L87 Difference]: Start difference. First operand 4462 states and 11909 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) [2021-05-21 17:48:58,127 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:48:58,311 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:48:58,481 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:48:58,681 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:48:58,885 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:48:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:48:59,703 INFO L93 Difference]: Finished difference Result 7618 states and 19161 transitions. [2021-05-21 17:48:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:48:59,703 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 [2021-05-21 17:48:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:48:59,709 INFO L225 Difference]: With dead ends: 7618 [2021-05-21 17:48:59,709 INFO L226 Difference]: Without dead ends: 7618 [2021-05-21 17:48:59,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2272.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:48:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2021-05-21 17:48:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 4468. [2021-05-21 17:48:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 2.6699507389162562) internal successors, (11924), 4467 states have internal predecessors, (11924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:48:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 11924 transitions. [2021-05-21 17:48:59,760 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 11924 transitions. Word has length 94 [2021-05-21 17:48:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:48:59,760 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 11924 transitions. [2021-05-21 17:48:59,761 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) [2021-05-21 17:48:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 11924 transitions. [2021-05-21 17:48:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:48:59,763 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:48:59,763 INFO L521 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] [2021-05-21 17:48:59,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-21 17:48:59,764 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]=== [2021-05-21 17:48:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:48:59,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1360728273, now seen corresponding path program 115 times [2021-05-21 17:48:59,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:48:59,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703087437] [2021-05-21 17:48:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:48:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:00,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:00,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703087437] [2021-05-21 17:49:00,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703087437] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:00,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:00,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:00,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045664487] [2021-05-21 17:49:00,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:00,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:00,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:00,214 INFO L87 Difference]: Start difference. First operand 4468 states and 11924 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) [2021-05-21 17:49:01,223 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:01,399 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:01,580 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:01,773 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:01,940 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:02,150 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:03,018 INFO L93 Difference]: Finished difference Result 7892 states and 19688 transitions. [2021-05-21 17:49:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:49:03,018 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 [2021-05-21 17:49:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:03,022 INFO L225 Difference]: With dead ends: 7892 [2021-05-21 17:49:03,023 INFO L226 Difference]: Without dead ends: 7892 [2021-05-21 17:49:03,023 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2470.8ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:49:03,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2021-05-21 17:49:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 4466. [2021-05-21 17:49:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.67002688172043) internal successors, (11919), 4465 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11919 transitions. [2021-05-21 17:49:03,072 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11919 transitions. Word has length 94 [2021-05-21 17:49:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:03,072 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11919 transitions. [2021-05-21 17:49:03,072 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) [2021-05-21 17:49:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11919 transitions. [2021-05-21 17:49:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:03,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:03,075 INFO L521 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] [2021-05-21 17:49:03,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-21 17:49:03,076 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]=== [2021-05-21 17:49:03,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:03,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1843945701, now seen corresponding path program 116 times [2021-05-21 17:49:03,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:03,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495502045] [2021-05-21 17:49:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:03,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:03,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495502045] [2021-05-21 17:49:03,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495502045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:03,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:03,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:03,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394958312] [2021-05-21 17:49:03,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:03,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:03,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:03,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:03,539 INFO L87 Difference]: Start difference. First operand 4466 states and 11919 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) [2021-05-21 17:49:04,527 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:04,690 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:49:04,888 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:05,060 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:05,258 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:05,426 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:05,639 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:06,476 INFO L93 Difference]: Finished difference Result 7414 states and 18752 transitions. [2021-05-21 17:49:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:49:06,477 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 [2021-05-21 17:49:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:06,482 INFO L225 Difference]: With dead ends: 7414 [2021-05-21 17:49:06,482 INFO L226 Difference]: Without dead ends: 7414 [2021-05-21 17:49:06,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2628.4ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:49:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2021-05-21 17:49:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 4454. [2021-05-21 17:49:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-05-21 17:49:06,530 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-05-21 17:49:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:06,531 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-05-21 17:49:06,531 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) [2021-05-21 17:49:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-05-21 17:49:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:06,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:06,534 INFO L521 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] [2021-05-21 17:49:06,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-21 17:49:06,534 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]=== [2021-05-21 17:49:06,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:06,534 INFO L82 PathProgramCache]: Analyzing trace with hash -304114657, now seen corresponding path program 117 times [2021-05-21 17:49:06,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:06,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175337063] [2021-05-21 17:49:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:06,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:06,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175337063] [2021-05-21 17:49:06,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175337063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:06,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:06,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:06,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078397166] [2021-05-21 17:49:06,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:06,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:06,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:06,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:06,985 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 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) [2021-05-21 17:49:07,989 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:08,169 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:08,344 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:49:08,550 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:49:08,759 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:49:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:09,622 INFO L93 Difference]: Finished difference Result 7690 states and 19320 transitions. [2021-05-21 17:49:09,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:49:09,622 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 [2021-05-21 17:49:09,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:09,626 INFO L225 Difference]: With dead ends: 7690 [2021-05-21 17:49:09,626 INFO L226 Difference]: Without dead ends: 7690 [2021-05-21 17:49:09,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2314.4ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:49:09,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2021-05-21 17:49:09,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 4462. [2021-05-21 17:49:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.6701793721973095) internal successors, (11909), 4461 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11909 transitions. [2021-05-21 17:49:09,675 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11909 transitions. Word has length 94 [2021-05-21 17:49:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:09,675 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11909 transitions. [2021-05-21 17:49:09,675 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) [2021-05-21 17:49:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11909 transitions. [2021-05-21 17:49:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:09,678 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:09,678 INFO L521 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] [2021-05-21 17:49:09,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-21 17:49:09,678 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]=== [2021-05-21 17:49:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1376899089, now seen corresponding path program 118 times [2021-05-21 17:49:09,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:09,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218911898] [2021-05-21 17:49:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:10,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:10,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218911898] [2021-05-21 17:49:10,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218911898] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:10,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:10,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:10,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513171557] [2021-05-21 17:49:10,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:10,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:10,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:10,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:10,132 INFO L87 Difference]: Start difference. First operand 4462 states and 11909 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) [2021-05-21 17:49:11,127 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:11,306 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:11,486 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:11,691 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:11,856 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:12,062 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:12,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:12,932 INFO L93 Difference]: Finished difference Result 7964 states and 19847 transitions. [2021-05-21 17:49:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:49:12,933 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 [2021-05-21 17:49:12,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:12,938 INFO L225 Difference]: With dead ends: 7964 [2021-05-21 17:49:12,938 INFO L226 Difference]: Without dead ends: 7964 [2021-05-21 17:49:12,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2463.7ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:49:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2021-05-21 17:49:12,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 4460. [2021-05-21 17:49:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-05-21 17:49:12,989 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-05-21 17:49:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:12,989 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-05-21 17:49:12,989 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) [2021-05-21 17:49:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-05-21 17:49:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:12,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:12,993 INFO L521 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] [2021-05-21 17:49:12,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-21 17:49:12,993 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]=== [2021-05-21 17:49:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:12,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1827774885, now seen corresponding path program 119 times [2021-05-21 17:49:12,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:12,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70549213] [2021-05-21 17:49:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:13,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:13,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70549213] [2021-05-21 17:49:13,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70549213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:13,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:13,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:13,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740662048] [2021-05-21 17:49:13,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:13,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:13,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:13,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:13,465 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 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) [2021-05-21 17:49:14,512 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:14,683 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:49:14,863 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:15,044 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:15,252 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:15,422 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:15,642 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:16,545 INFO L93 Difference]: Finished difference Result 8030 states and 19991 transitions. [2021-05-21 17:49:16,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:49:16,546 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 [2021-05-21 17:49:16,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:16,550 INFO L225 Difference]: With dead ends: 8030 [2021-05-21 17:49:16,550 INFO L226 Difference]: Without dead ends: 8030 [2021-05-21 17:49:16,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2661.3ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:49:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8030 states. [2021-05-21 17:49:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8030 to 4456. [2021-05-21 17:49:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4454 states have (on average 2.670408621463853) internal successors, (11894), 4455 states have internal predecessors, (11894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 11894 transitions. [2021-05-21 17:49:16,602 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 11894 transitions. Word has length 94 [2021-05-21 17:49:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:16,602 INFO L482 AbstractCegarLoop]: Abstraction has 4456 states and 11894 transitions. [2021-05-21 17:49:16,602 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) [2021-05-21 17:49:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 11894 transitions. [2021-05-21 17:49:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:16,605 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:16,605 INFO L521 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] [2021-05-21 17:49:16,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-21 17:49:16,605 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]=== [2021-05-21 17:49:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:16,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1619052793, now seen corresponding path program 120 times [2021-05-21 17:49:16,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:16,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093513312] [2021-05-21 17:49:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:17,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:17,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093513312] [2021-05-21 17:49:17,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093513312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:17,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:17,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:17,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191738531] [2021-05-21 17:49:17,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:17,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:17,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:17,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:17,083 INFO L87 Difference]: Start difference. First operand 4456 states and 11894 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) [2021-05-21 17:49:18,087 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:49:18,245 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:49:18,400 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:49:18,572 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:18,757 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:18,962 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:19,135 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:19,348 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:20,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:20,198 INFO L93 Difference]: Finished difference Result 7482 states and 18901 transitions. [2021-05-21 17:49:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:49:20,198 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 [2021-05-21 17:49:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:20,204 INFO L225 Difference]: With dead ends: 7482 [2021-05-21 17:49:20,204 INFO L226 Difference]: Without dead ends: 7482 [2021-05-21 17:49:20,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2822.7ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:49:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-05-21 17:49:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 4450. [2021-05-21 17:49:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4448 states have (on average 2.670638489208633) internal successors, (11879), 4449 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 11879 transitions. [2021-05-21 17:49:20,255 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 11879 transitions. Word has length 94 [2021-05-21 17:49:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:20,255 INFO L482 AbstractCegarLoop]: Abstraction has 4450 states and 11879 transitions. [2021-05-21 17:49:20,255 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) [2021-05-21 17:49:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 11879 transitions. [2021-05-21 17:49:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:20,258 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:20,258 INFO L521 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] [2021-05-21 17:49:20,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-21 17:49:20,258 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]=== [2021-05-21 17:49:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:20,259 INFO L82 PathProgramCache]: Analyzing trace with hash -619004041, now seen corresponding path program 121 times [2021-05-21 17:49:20,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:20,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904491787] [2021-05-21 17:49:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:20,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:20,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904491787] [2021-05-21 17:49:20,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904491787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:20,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:20,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:20,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765237935] [2021-05-21 17:49:20,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:20,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:20,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:20,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:20,715 INFO L87 Difference]: Start difference. First operand 4450 states and 11879 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) [2021-05-21 17:49:21,696 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:21,868 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:22,038 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:49:22,238 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:49:22,443 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:49:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:23,277 INFO L93 Difference]: Finished difference Result 7122 states and 18080 transitions. [2021-05-21 17:49:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:49:23,277 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 [2021-05-21 17:49:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:23,281 INFO L225 Difference]: With dead ends: 7122 [2021-05-21 17:49:23,282 INFO L226 Difference]: Without dead ends: 7122 [2021-05-21 17:49:23,282 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2338.5ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:49:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2021-05-21 17:49:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 4460. [2021-05-21 17:49:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-05-21 17:49:23,330 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-05-21 17:49:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:23,330 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-05-21 17:49:23,330 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) [2021-05-21 17:49:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-05-21 17:49:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:23,333 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:23,333 INFO L521 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] [2021-05-21 17:49:23,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-21 17:49:23,334 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]=== [2021-05-21 17:49:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1062009705, now seen corresponding path program 122 times [2021-05-21 17:49:23,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:23,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114919937] [2021-05-21 17:49:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:23,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:23,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114919937] [2021-05-21 17:49:23,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114919937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:23,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:23,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:23,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436711255] [2021-05-21 17:49:23,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:23,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:23,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:23,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:23,782 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 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) [2021-05-21 17:49:24,769 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:24,944 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:25,138 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:25,330 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:25,498 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:25,700 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:26,547 INFO L93 Difference]: Finished difference Result 7396 states and 18607 transitions. [2021-05-21 17:49:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:49:26,547 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 [2021-05-21 17:49:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:26,552 INFO L225 Difference]: With dead ends: 7396 [2021-05-21 17:49:26,552 INFO L226 Difference]: Without dead ends: 7396 [2021-05-21 17:49:26,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2482.9ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:49:26,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2021-05-21 17:49:26,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 4458. [2021-05-21 17:49:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6703321364452424) internal successors, (11899), 4457 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11899 transitions. [2021-05-21 17:49:26,603 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11899 transitions. Word has length 94 [2021-05-21 17:49:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:26,603 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11899 transitions. [2021-05-21 17:49:26,603 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) [2021-05-21 17:49:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11899 transitions. [2021-05-21 17:49:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:26,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:26,606 INFO L521 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] [2021-05-21 17:49:26,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-21 17:49:26,606 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]=== [2021-05-21 17:49:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:26,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2142664269, now seen corresponding path program 123 times [2021-05-21 17:49:26,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:26,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866080958] [2021-05-21 17:49:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:27,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:27,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866080958] [2021-05-21 17:49:27,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866080958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:27,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:27,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:27,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774000201] [2021-05-21 17:49:27,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:27,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:27,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:27,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:27,068 INFO L87 Difference]: Start difference. First operand 4458 states and 11899 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) [2021-05-21 17:49:28,062 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:49:28,227 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:49:28,402 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:28,577 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:28,779 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:28,951 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:29,167 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:30,033 INFO L93 Difference]: Finished difference Result 7462 states and 18751 transitions. [2021-05-21 17:49:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:49:30,033 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 [2021-05-21 17:49:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:30,037 INFO L225 Difference]: With dead ends: 7462 [2021-05-21 17:49:30,037 INFO L226 Difference]: Without dead ends: 7462 [2021-05-21 17:49:30,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2679.5ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:49:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7462 states. [2021-05-21 17:49:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7462 to 4454. [2021-05-21 17:49:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-05-21 17:49:30,086 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-05-21 17:49:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:30,087 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-05-21 17:49:30,087 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) [2021-05-21 17:49:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-05-21 17:49:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:30,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:30,090 INFO L521 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] [2021-05-21 17:49:30,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-21 17:49:30,090 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]=== [2021-05-21 17:49:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1304163409, now seen corresponding path program 124 times [2021-05-21 17:49:30,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:30,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729795311] [2021-05-21 17:49:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:30,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:30,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729795311] [2021-05-21 17:49:30,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729795311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:30,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:30,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:30,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302444098] [2021-05-21 17:49:30,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:30,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:30,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:30,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:30,575 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 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) [2021-05-21 17:49:31,602 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:49:31,758 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:49:31,909 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:49:32,080 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:32,266 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:32,472 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:32,642 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:32,856 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:33,728 INFO L93 Difference]: Finished difference Result 7528 states and 18895 transitions. [2021-05-21 17:49:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:49:33,728 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 [2021-05-21 17:49:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:33,734 INFO L225 Difference]: With dead ends: 7528 [2021-05-21 17:49:33,734 INFO L226 Difference]: Without dead ends: 7528 [2021-05-21 17:49:33,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2789.0ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:49:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2021-05-21 17:49:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 4452. [2021-05-21 17:49:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4450 states have (on average 2.670561797752809) internal successors, (11884), 4451 states have internal predecessors, (11884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 11884 transitions. [2021-05-21 17:49:33,784 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 11884 transitions. Word has length 94 [2021-05-21 17:49:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:33,784 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 11884 transitions. [2021-05-21 17:49:33,784 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) [2021-05-21 17:49:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 11884 transitions. [2021-05-21 17:49:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:33,787 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:33,787 INFO L521 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] [2021-05-21 17:49:33,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-21 17:49:33,787 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]=== [2021-05-21 17:49:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:33,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1125859795, now seen corresponding path program 125 times [2021-05-21 17:49:33,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:33,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575209281] [2021-05-21 17:49:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:34,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:34,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575209281] [2021-05-21 17:49:34,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575209281] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:34,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:34,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:34,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632219685] [2021-05-21 17:49:34,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:34,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:34,306 INFO L87 Difference]: Start difference. First operand 4452 states and 11884 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) [2021-05-21 17:49:35,336 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:49:35,463 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:49:35,617 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:49:35,759 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:49:35,938 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:36,124 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:36,344 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:36,512 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:36,727 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:37,564 INFO L93 Difference]: Finished difference Result 6912 states and 17656 transitions. [2021-05-21 17:49:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 17:49:37,565 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 [2021-05-21 17:49:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:37,570 INFO L225 Difference]: With dead ends: 6912 [2021-05-21 17:49:37,570 INFO L226 Difference]: Without dead ends: 6912 [2021-05-21 17:49:37,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2981.4ms TimeCoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 17:49:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2021-05-21 17:49:37,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 4450. [2021-05-21 17:49:37,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4448 states have (on average 2.670638489208633) internal successors, (11879), 4449 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 11879 transitions. [2021-05-21 17:49:37,620 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 11879 transitions. Word has length 94 [2021-05-21 17:49:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:37,620 INFO L482 AbstractCegarLoop]: Abstraction has 4450 states and 11879 transitions. [2021-05-21 17:49:37,620 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) [2021-05-21 17:49:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 11879 transitions. [2021-05-21 17:49:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:37,623 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:37,623 INFO L521 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] [2021-05-21 17:49:37,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-21 17:49:37,624 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]=== [2021-05-21 17:49:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 420338423, now seen corresponding path program 126 times [2021-05-21 17:49:37,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:37,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179917681] [2021-05-21 17:49:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:38,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:38,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179917681] [2021-05-21 17:49:38,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179917681] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:38,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:38,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:38,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361026073] [2021-05-21 17:49:38,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:38,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:38,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:38,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:38,072 INFO L87 Difference]: Start difference. First operand 4450 states and 11879 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) [2021-05-21 17:49:39,069 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:49:39,240 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:49:39,597 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:49:39,785 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:49:39,978 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:49:40,279 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:40,447 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:49:40,618 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:40,796 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:49:40,968 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:49:41,138 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:49:41,313 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:49:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:41,320 INFO L93 Difference]: Finished difference Result 8672 states and 22142 transitions. [2021-05-21 17:49:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:49:41,320 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 [2021-05-21 17:49:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:41,325 INFO L225 Difference]: With dead ends: 8672 [2021-05-21 17:49:41,325 INFO L226 Difference]: Without dead ends: 8672 [2021-05-21 17:49:41,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2891.0ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:49:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2021-05-21 17:49:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 4546. [2021-05-21 17:49:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4544 states have (on average 2.6775968309859155) internal successors, (12167), 4545 states have internal predecessors, (12167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 12167 transitions. [2021-05-21 17:49:41,379 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 12167 transitions. Word has length 94 [2021-05-21 17:49:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:41,379 INFO L482 AbstractCegarLoop]: Abstraction has 4546 states and 12167 transitions. [2021-05-21 17:49:41,379 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) [2021-05-21 17:49:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 12167 transitions. [2021-05-21 17:49:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:41,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:41,382 INFO L521 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] [2021-05-21 17:49:41,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-21 17:49:41,382 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]=== [2021-05-21 17:49:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:41,382 INFO L82 PathProgramCache]: Analyzing trace with hash 130233045, now seen corresponding path program 127 times [2021-05-21 17:49:41,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:41,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023181499] [2021-05-21 17:49:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:41,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:41,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023181499] [2021-05-21 17:49:41,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023181499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:41,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:41,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:41,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86453890] [2021-05-21 17:49:41,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:41,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:41,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:41,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:41,833 INFO L87 Difference]: Start difference. First operand 4546 states and 12167 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) [2021-05-21 17:49:42,827 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:49:42,998 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:49:43,215 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:49:43,427 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:49:43,795 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:49:43,988 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:49:44,307 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:49:44,498 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:49:44,698 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:49:44,891 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:49:45,087 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:49:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:45,093 INFO L93 Difference]: Finished difference Result 9346 states and 23938 transitions. [2021-05-21 17:49:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:49:45,094 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 [2021-05-21 17:49:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:45,101 INFO L225 Difference]: With dead ends: 9346 [2021-05-21 17:49:45,101 INFO L226 Difference]: Without dead ends: 9346 [2021-05-21 17:49:45,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2854.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:49:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2021-05-21 17:49:45,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 4510. [2021-05-21 17:49:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-05-21 17:49:45,160 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-05-21 17:49:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:45,160 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-05-21 17:49:45,160 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) [2021-05-21 17:49:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-05-21 17:49:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:45,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:45,163 INFO L521 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] [2021-05-21 17:49:45,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-21 17:49:45,163 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]=== [2021-05-21 17:49:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1766983107, now seen corresponding path program 128 times [2021-05-21 17:49:45,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:45,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612181918] [2021-05-21 17:49:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:45,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:45,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612181918] [2021-05-21 17:49:45,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612181918] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:45,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:45,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:45,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144665908] [2021-05-21 17:49:45,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:45,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:45,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:45,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:45,618 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 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) [2021-05-21 17:49:46,598 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:49:46,913 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:47,071 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:49:47,264 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:49:47,464 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:49:47,767 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:49:47,923 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:49:48,074 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:49:48,236 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:49:48,374 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:48,530 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:48,690 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:49:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:48,699 INFO L93 Difference]: Finished difference Result 9120 states and 23141 transitions. [2021-05-21 17:49:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:49:48,700 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 [2021-05-21 17:49:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:48,706 INFO L225 Difference]: With dead ends: 9120 [2021-05-21 17:49:48,706 INFO L226 Difference]: Without dead ends: 9120 [2021-05-21 17:49:48,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2738.1ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:49:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2021-05-21 17:49:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 4512. [2021-05-21 17:49:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4510 states have (on average 2.6749445676274943) internal successors, (12064), 4511 states have internal predecessors, (12064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12064 transitions. [2021-05-21 17:49:48,763 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12064 transitions. Word has length 94 [2021-05-21 17:49:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:48,763 INFO L482 AbstractCegarLoop]: Abstraction has 4512 states and 12064 transitions. [2021-05-21 17:49:48,763 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) [2021-05-21 17:49:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12064 transitions. [2021-05-21 17:49:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:48,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:48,766 INFO L521 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] [2021-05-21 17:49:48,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-21 17:49:48,767 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]=== [2021-05-21 17:49:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:48,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1552647, now seen corresponding path program 129 times [2021-05-21 17:49:48,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:48,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115074543] [2021-05-21 17:49:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:49,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115074543] [2021-05-21 17:49:49,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115074543] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:49,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:49,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:49,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091218355] [2021-05-21 17:49:49,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:49,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:49,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:49,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:49,209 INFO L87 Difference]: Start difference. First operand 4512 states and 12064 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) [2021-05-21 17:49:50,196 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:49:50,525 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:50,691 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:50,873 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:49:51,040 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:51,238 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:49:51,556 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:49:51,710 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:49:51,866 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:49:52,053 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:49:52,194 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:49:52,346 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:49:52,501 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:49:52,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:52,508 INFO L93 Difference]: Finished difference Result 9102 states and 23103 transitions. [2021-05-21 17:49:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:49:52,508 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 [2021-05-21 17:49:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:52,514 INFO L225 Difference]: With dead ends: 9102 [2021-05-21 17:49:52,514 INFO L226 Difference]: Without dead ends: 9102 [2021-05-21 17:49:52,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2952.1ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:49:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2021-05-21 17:49:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 4510. [2021-05-21 17:49:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-05-21 17:49:52,573 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-05-21 17:49:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:52,574 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-05-21 17:49:52,574 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) [2021-05-21 17:49:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-05-21 17:49:52,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:52,577 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:52,577 INFO L521 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] [2021-05-21 17:49:52,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-21 17:49:52,577 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]=== [2021-05-21 17:49:52,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:52,578 INFO L82 PathProgramCache]: Analyzing trace with hash 676739655, now seen corresponding path program 130 times [2021-05-21 17:49:52,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:52,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530523835] [2021-05-21 17:49:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:53,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:53,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530523835] [2021-05-21 17:49:53,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530523835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:53,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:53,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:53,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108729811] [2021-05-21 17:49:53,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:53,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:53,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:53,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:53,048 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 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) [2021-05-21 17:49:54,009 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:49:54,201 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:49:54,394 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:49:54,556 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:49:54,760 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:49:55,133 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:49:55,300 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:55,492 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:49:55,816 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:49:55,998 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:49:56,170 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:49:56,360 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:49:56,557 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:49:56,753 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:49:56,931 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:49:57,122 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:49:57,299 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:49:57,486 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:49:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:49:57,496 INFO L93 Difference]: Finished difference Result 10563 states and 26783 transitions. [2021-05-21 17:49:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 17:49:57,496 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 [2021-05-21 17:49:57,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:49:57,502 INFO L225 Difference]: With dead ends: 10563 [2021-05-21 17:49:57,502 INFO L226 Difference]: Without dead ends: 10563 [2021-05-21 17:49:57,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4071.9ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 17:49:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2021-05-21 17:49:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 4522. [2021-05-21 17:49:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:49:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-05-21 17:49:57,562 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-05-21 17:49:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:49:57,562 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-05-21 17:49:57,562 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) [2021-05-21 17:49:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-05-21 17:49:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:49:57,565 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:49:57,566 INFO L521 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] [2021-05-21 17:49:57,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-21 17:49:57,566 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]=== [2021-05-21 17:49:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:49:57,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1714559553, now seen corresponding path program 131 times [2021-05-21 17:49:57,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:49:57,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089297239] [2021-05-21 17:49:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:49:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:49:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:49:58,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:49:58,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089297239] [2021-05-21 17:49:58,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089297239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:49:58,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:49:58,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:49:58,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582325745] [2021-05-21 17:49:58,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:49:58,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:49:58,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:49:58,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:49:58,028 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 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) [2021-05-21 17:49:59,018 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:49:59,197 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:49:59,388 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:49:59,737 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:49:59,917 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:00,084 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:00,286 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:00,621 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:50:00,793 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:50:00,987 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:50:01,161 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:01,333 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:50:01,509 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:01,515 INFO L93 Difference]: Finished difference Result 9732 states and 24702 transitions. [2021-05-21 17:50:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:50:01,515 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 [2021-05-21 17:50:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:01,521 INFO L225 Difference]: With dead ends: 9732 [2021-05-21 17:50:01,521 INFO L226 Difference]: Without dead ends: 9732 [2021-05-21 17:50:01,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3111.6ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:50:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2021-05-21 17:50:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 4498. [2021-05-21 17:50:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4496 states have (on average 2.674154804270463) internal successors, (12023), 4497 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 12023 transitions. [2021-05-21 17:50:01,581 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 12023 transitions. Word has length 94 [2021-05-21 17:50:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:01,581 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 12023 transitions. [2021-05-21 17:50:01,581 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) [2021-05-21 17:50:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 12023 transitions. [2021-05-21 17:50:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:01,584 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:01,584 INFO L521 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] [2021-05-21 17:50:01,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-21 17:50:01,585 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]=== [2021-05-21 17:50:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:01,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1741617971, now seen corresponding path program 132 times [2021-05-21 17:50:01,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:01,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814142480] [2021-05-21 17:50:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:02,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:02,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814142480] [2021-05-21 17:50:02,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814142480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:02,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:02,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:02,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330975405] [2021-05-21 17:50:02,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:02,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:02,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:02,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:02,085 INFO L87 Difference]: Start difference. First operand 4498 states and 12023 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) [2021-05-21 17:50:02,897 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-05-21 17:50:03,261 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:03,415 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:03,585 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:50:03,787 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:50:03,998 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:50:04,304 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:50:04,448 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:50:04,591 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:50:04,742 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:50:04,867 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:05,013 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:05,164 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:50:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:05,173 INFO L93 Difference]: Finished difference Result 9236 states and 23427 transitions. [2021-05-21 17:50:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:50:05,173 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 [2021-05-21 17:50:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:05,180 INFO L225 Difference]: With dead ends: 9236 [2021-05-21 17:50:05,180 INFO L226 Difference]: Without dead ends: 9236 [2021-05-21 17:50:05,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2751.1ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:50:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9236 states. [2021-05-21 17:50:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9236 to 4504. [2021-05-21 17:50:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4504 states, 4502 states have (on average 2.6739227010217683) internal successors, (12038), 4503 states have internal predecessors, (12038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 12038 transitions. [2021-05-21 17:50:05,242 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 12038 transitions. Word has length 94 [2021-05-21 17:50:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:05,242 INFO L482 AbstractCegarLoop]: Abstraction has 4504 states and 12038 transitions. [2021-05-21 17:50:05,242 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) [2021-05-21 17:50:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 12038 transitions. [2021-05-21 17:50:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:05,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:05,245 INFO L521 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] [2021-05-21 17:50:05,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-21 17:50:05,245 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]=== [2021-05-21 17:50:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:05,246 INFO L82 PathProgramCache]: Analyzing trace with hash -784813571, now seen corresponding path program 133 times [2021-05-21 17:50:05,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:05,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308305577] [2021-05-21 17:50:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:05,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:05,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308305577] [2021-05-21 17:50:05,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308305577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:05,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:05,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:05,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909767788] [2021-05-21 17:50:05,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:05,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:05,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:05,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:05,734 INFO L87 Difference]: Start difference. First operand 4504 states and 12038 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) [2021-05-21 17:50:06,870 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:07,022 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:07,197 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:07,386 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:07,556 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:07,782 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:08,107 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:50:08,252 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:50:08,391 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:50:08,539 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:50:08,675 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:08,817 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:08,964 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:50:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:08,973 INFO L93 Difference]: Finished difference Result 9510 states and 23954 transitions. [2021-05-21 17:50:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:50:08,974 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 [2021-05-21 17:50:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:08,980 INFO L225 Difference]: With dead ends: 9510 [2021-05-21 17:50:08,980 INFO L226 Difference]: Without dead ends: 9510 [2021-05-21 17:50:08,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2866.4ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:50:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2021-05-21 17:50:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 4502. [2021-05-21 17:50:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 2.674) internal successors, (12033), 4501 states have internal predecessors, (12033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 12033 transitions. [2021-05-21 17:50:09,040 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 12033 transitions. Word has length 94 [2021-05-21 17:50:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:09,040 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 12033 transitions. [2021-05-21 17:50:09,041 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) [2021-05-21 17:50:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 12033 transitions. [2021-05-21 17:50:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:09,043 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:09,044 INFO L521 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] [2021-05-21 17:50:09,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-21 17:50:09,044 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]=== [2021-05-21 17:50:09,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:09,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1320065741, now seen corresponding path program 134 times [2021-05-21 17:50:09,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:09,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346621049] [2021-05-21 17:50:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:09,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:09,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346621049] [2021-05-21 17:50:09,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346621049] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:09,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:09,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:09,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053553945] [2021-05-21 17:50:09,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:09,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:09,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:09,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:09,501 INFO L87 Difference]: Start difference. First operand 4502 states and 12033 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) [2021-05-21 17:50:10,610 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:10,760 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:10,922 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:11,087 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:11,281 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:11,453 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:11,664 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:11,966 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-05-21 17:50:12,106 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:50:12,262 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:50:12,409 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:50:12,537 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:12,675 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:12,817 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:50:12,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:12,823 INFO L93 Difference]: Finished difference Result 9260 states and 23480 transitions. [2021-05-21 17:50:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:50:12,824 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 [2021-05-21 17:50:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:12,829 INFO L225 Difference]: With dead ends: 9260 [2021-05-21 17:50:12,829 INFO L226 Difference]: Without dead ends: 9260 [2021-05-21 17:50:12,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2984.5ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:50:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2021-05-21 17:50:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 4498. [2021-05-21 17:50:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4496 states have (on average 2.674154804270463) internal successors, (12023), 4497 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 12023 transitions. [2021-05-21 17:50:12,884 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 12023 transitions. Word has length 94 [2021-05-21 17:50:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:12,884 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 12023 transitions. [2021-05-21 17:50:12,884 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) [2021-05-21 17:50:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 12023 transitions. [2021-05-21 17:50:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:12,887 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:12,888 INFO L521 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] [2021-05-21 17:50:12,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-21 17:50:12,888 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]=== [2021-05-21 17:50:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:12,888 INFO L82 PathProgramCache]: Analyzing trace with hash 476601873, now seen corresponding path program 135 times [2021-05-21 17:50:12,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:12,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133727280] [2021-05-21 17:50:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:13,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:13,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133727280] [2021-05-21 17:50:13,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133727280] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:13,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:13,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:13,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79467843] [2021-05-21 17:50:13,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:13,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:13,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:13,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:13,366 INFO L87 Difference]: Start difference. First operand 4498 states and 12023 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) [2021-05-21 17:50:14,364 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:14,555 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:50:14,731 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:50:14,932 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:50:15,098 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:50:15,311 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:50:15,647 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:15,853 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:50:16,022 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:16,248 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:50:16,594 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:50:16,792 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:50:16,951 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:50:17,144 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:50:17,311 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:50:17,511 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:50:17,674 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:50:17,865 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:50:18,031 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:18,217 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:50:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:18,227 INFO L93 Difference]: Finished difference Result 10914 states and 27695 transitions. [2021-05-21 17:50:18,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:50:18,227 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 [2021-05-21 17:50:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:18,233 INFO L225 Difference]: With dead ends: 10914 [2021-05-21 17:50:18,233 INFO L226 Difference]: Without dead ends: 10914 [2021-05-21 17:50:18,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4368.3ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:50:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10914 states. [2021-05-21 17:50:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10914 to 4534. [2021-05-21 17:50:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4532 states have (on average 2.6767431597528684) internal successors, (12131), 4533 states have internal predecessors, (12131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 12131 transitions. [2021-05-21 17:50:18,298 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 12131 transitions. Word has length 94 [2021-05-21 17:50:18,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:18,298 INFO L482 AbstractCegarLoop]: Abstraction has 4534 states and 12131 transitions. [2021-05-21 17:50:18,298 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) [2021-05-21 17:50:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 12131 transitions. [2021-05-21 17:50:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:18,301 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:18,301 INFO L521 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] [2021-05-21 17:50:18,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-21 17:50:18,301 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]=== [2021-05-21 17:50:18,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:18,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1514421771, now seen corresponding path program 136 times [2021-05-21 17:50:18,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:18,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551353981] [2021-05-21 17:50:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:18,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:18,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551353981] [2021-05-21 17:50:18,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551353981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:18,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:18,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:18,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557390583] [2021-05-21 17:50:18,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:18,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:18,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:18,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:18,803 INFO L87 Difference]: Start difference. First operand 4534 states and 12131 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) [2021-05-21 17:50:19,772 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:19,948 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:50:20,125 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:50:20,322 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:50:20,692 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:20,860 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:21,052 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:21,245 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:21,460 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:21,839 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:50:22,009 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:50:22,170 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:50:22,348 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:50:22,521 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:50:22,706 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:50:22,871 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:23,029 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:50:23,205 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:50:23,372 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:23,572 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:23,582 INFO L93 Difference]: Finished difference Result 11183 states and 28155 transitions. [2021-05-21 17:50:23,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 17:50:23,582 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 [2021-05-21 17:50:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:23,588 INFO L225 Difference]: With dead ends: 11183 [2021-05-21 17:50:23,588 INFO L226 Difference]: Without dead ends: 11183 [2021-05-21 17:50:23,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4273.8ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 17:50:23,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-05-21 17:50:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 4522. [2021-05-21 17:50:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-05-21 17:50:23,650 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-05-21 17:50:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:23,650 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-05-21 17:50:23,651 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) [2021-05-21 17:50:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-05-21 17:50:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:23,654 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:23,654 INFO L521 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] [2021-05-21 17:50:23,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-21 17:50:23,654 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]=== [2021-05-21 17:50:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:23,654 INFO L82 PathProgramCache]: Analyzing trace with hash -450607531, now seen corresponding path program 137 times [2021-05-21 17:50:23,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:23,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315881807] [2021-05-21 17:50:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:24,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:24,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315881807] [2021-05-21 17:50:24,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315881807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:24,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:24,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:24,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597380538] [2021-05-21 17:50:24,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:24,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:24,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:24,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:24,130 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 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) [2021-05-21 17:50:25,092 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:25,271 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:50:25,682 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:25,841 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:26,008 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:26,196 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:26,367 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:26,573 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:26,899 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:50:27,059 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:50:27,227 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:50:27,375 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:27,533 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:50:27,697 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:27,704 INFO L93 Difference]: Finished difference Result 10010 states and 25408 transitions. [2021-05-21 17:50:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:50:27,704 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 [2021-05-21 17:50:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:27,711 INFO L225 Difference]: With dead ends: 10010 [2021-05-21 17:50:27,711 INFO L226 Difference]: Without dead ends: 10010 [2021-05-21 17:50:27,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3184.3ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:50:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2021-05-21 17:50:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 4474. [2021-05-21 17:50:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 2.672406082289803) internal successors, (11951), 4473 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11951 transitions. [2021-05-21 17:50:27,774 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11951 transitions. Word has length 94 [2021-05-21 17:50:27,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:27,774 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 11951 transitions. [2021-05-21 17:50:27,774 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) [2021-05-21 17:50:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11951 transitions. [2021-05-21 17:50:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:27,777 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:27,777 INFO L521 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] [2021-05-21 17:50:27,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-21 17:50:27,777 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]=== [2021-05-21 17:50:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:27,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1005207761, now seen corresponding path program 138 times [2021-05-21 17:50:27,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:27,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404907714] [2021-05-21 17:50:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:28,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:28,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404907714] [2021-05-21 17:50:28,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404907714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:28,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:28,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:28,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617816729] [2021-05-21 17:50:28,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:28,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:28,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:28,221 INFO L87 Difference]: Start difference. First operand 4474 states and 11951 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) [2021-05-21 17:50:29,305 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:29,465 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:29,631 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:50:29,832 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:50:30,034 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:50:30,586 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:50:30,724 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:50:30,965 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:50:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:31,109 INFO L93 Difference]: Finished difference Result 9396 states and 23840 transitions. [2021-05-21 17:50:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:50:31,109 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 [2021-05-21 17:50:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:31,115 INFO L225 Difference]: With dead ends: 9396 [2021-05-21 17:50:31,115 INFO L226 Difference]: Without dead ends: 9396 [2021-05-21 17:50:31,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2516.9ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:50:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2021-05-21 17:50:31,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 4482. [2021-05-21 17:50:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.672098214285714) internal successors, (11971), 4481 states have internal predecessors, (11971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11971 transitions. [2021-05-21 17:50:31,173 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11971 transitions. Word has length 94 [2021-05-21 17:50:31,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:31,173 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11971 transitions. [2021-05-21 17:50:31,173 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) [2021-05-21 17:50:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11971 transitions. [2021-05-21 17:50:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:31,176 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:31,176 INFO L521 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] [2021-05-21 17:50:31,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-21 17:50:31,176 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]=== [2021-05-21 17:50:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:31,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1521223781, now seen corresponding path program 139 times [2021-05-21 17:50:31,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:31,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145500585] [2021-05-21 17:50:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:31,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:31,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145500585] [2021-05-21 17:50:31,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145500585] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:31,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:31,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:31,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980986595] [2021-05-21 17:50:31,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:31,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:31,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:31,624 INFO L87 Difference]: Start difference. First operand 4482 states and 11971 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) [2021-05-21 17:50:32,702 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:32,861 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:33,035 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:33,224 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:33,392 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:33,595 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:34,051 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-05-21 17:50:34,179 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:50:34,315 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:50:34,553 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:50:34,703 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-05-21 17:50:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:34,712 INFO L93 Difference]: Finished difference Result 9670 states and 24367 transitions. [2021-05-21 17:50:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:50:34,712 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 [2021-05-21 17:50:34,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:34,719 INFO L225 Difference]: With dead ends: 9670 [2021-05-21 17:50:34,719 INFO L226 Difference]: Without dead ends: 9670 [2021-05-21 17:50:34,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2723.6ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:50:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9670 states. [2021-05-21 17:50:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9670 to 4480. [2021-05-21 17:50:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4478 states have (on average 2.672175078159893) internal successors, (11966), 4479 states have internal predecessors, (11966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 11966 transitions. [2021-05-21 17:50:34,775 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 11966 transitions. Word has length 94 [2021-05-21 17:50:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:34,775 INFO L482 AbstractCegarLoop]: Abstraction has 4480 states and 11966 transitions. [2021-05-21 17:50:34,775 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) [2021-05-21 17:50:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 11966 transitions. [2021-05-21 17:50:34,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:34,778 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:34,778 INFO L521 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] [2021-05-21 17:50:34,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-21 17:50:34,779 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]=== [2021-05-21 17:50:34,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:34,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2056475951, now seen corresponding path program 140 times [2021-05-21 17:50:34,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:34,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811125450] [2021-05-21 17:50:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:35,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:35,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811125450] [2021-05-21 17:50:35,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811125450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:35,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:35,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:35,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889265533] [2021-05-21 17:50:35,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:35,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:35,239 INFO L87 Difference]: Start difference. First operand 4480 states and 11966 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) [2021-05-21 17:50:36,332 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:36,490 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:36,659 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:36,851 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:37,054 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:37,225 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:37,442 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:38,028 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:50:38,164 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:50:38,404 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:50:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:38,548 INFO L93 Difference]: Finished difference Result 9736 states and 24511 transitions. [2021-05-21 17:50:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:50:38,549 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 [2021-05-21 17:50:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:38,555 INFO L225 Difference]: With dead ends: 9736 [2021-05-21 17:50:38,555 INFO L226 Difference]: Without dead ends: 9736 [2021-05-21 17:50:38,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2898.2ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:50:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-05-21 17:50:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 4476. [2021-05-21 17:50:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4474 states have (on average 2.6723290120697363) internal successors, (11956), 4475 states have internal predecessors, (11956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 11956 transitions. [2021-05-21 17:50:38,615 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 11956 transitions. Word has length 94 [2021-05-21 17:50:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:38,615 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 11956 transitions. [2021-05-21 17:50:38,615 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) [2021-05-21 17:50:38,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 11956 transitions. [2021-05-21 17:50:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:38,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:38,618 INFO L521 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] [2021-05-21 17:50:38,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-21 17:50:38,618 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]=== [2021-05-21 17:50:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1048877009, now seen corresponding path program 141 times [2021-05-21 17:50:38,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:38,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665428380] [2021-05-21 17:50:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:39,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:39,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665428380] [2021-05-21 17:50:39,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665428380] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:39,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:39,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:39,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575049736] [2021-05-21 17:50:39,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:39,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:39,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:39,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:39,117 INFO L87 Difference]: Start difference. First operand 4476 states and 11956 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) [2021-05-21 17:50:40,205 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:50:40,352 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:40,491 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:40,651 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:40,827 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:41,026 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:41,196 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:41,416 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:41,966 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:50:42,099 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:50:42,336 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:50:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:42,472 INFO L93 Difference]: Finished difference Result 9438 states and 23931 transitions. [2021-05-21 17:50:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:50:42,472 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 [2021-05-21 17:50:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:42,478 INFO L225 Difference]: With dead ends: 9438 [2021-05-21 17:50:42,478 INFO L226 Difference]: Without dead ends: 9438 [2021-05-21 17:50:42,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3046.7ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:50:42,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-05-21 17:50:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 4474. [2021-05-21 17:50:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 2.672406082289803) internal successors, (11951), 4473 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11951 transitions. [2021-05-21 17:50:42,535 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11951 transitions. Word has length 94 [2021-05-21 17:50:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:42,535 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 11951 transitions. [2021-05-21 17:50:42,535 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) [2021-05-21 17:50:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11951 transitions. [2021-05-21 17:50:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:42,538 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:42,538 INFO L521 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] [2021-05-21 17:50:42,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-21 17:50:42,538 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]=== [2021-05-21 17:50:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1458215215, now seen corresponding path program 142 times [2021-05-21 17:50:42,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:42,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566364773] [2021-05-21 17:50:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:43,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:43,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566364773] [2021-05-21 17:50:43,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566364773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:43,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:43,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:43,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18788034] [2021-05-21 17:50:43,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:43,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:43,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:43,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:43,030 INFO L87 Difference]: Start difference. First operand 4474 states and 11951 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) [2021-05-21 17:50:43,823 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:43,980 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:44,113 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:50:44,284 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:50:44,468 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:50:44,671 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:50:44,832 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:50:45,044 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:50:45,359 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:45,527 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:45,765 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:50:45,935 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:46,141 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:50:46,477 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:50:46,663 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:50:46,805 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:50:46,996 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:50:47,147 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:50:47,345 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:50:47,496 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:50:47,686 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:50:47,831 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:48,028 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:50:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:48,038 INFO L93 Difference]: Finished difference Result 11265 states and 28607 transitions. [2021-05-21 17:50:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:50:48,038 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 [2021-05-21 17:50:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:48,045 INFO L225 Difference]: With dead ends: 11265 [2021-05-21 17:50:48,045 INFO L226 Difference]: Without dead ends: 11265 [2021-05-21 17:50:48,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4495.7ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:50:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11265 states. [2021-05-21 17:50:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11265 to 4522. [2021-05-21 17:50:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-05-21 17:50:48,110 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-05-21 17:50:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:48,110 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-05-21 17:50:48,110 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) [2021-05-21 17:50:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-05-21 17:50:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:48,113 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:48,113 INFO L521 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] [2021-05-21 17:50:48,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-21 17:50:48,113 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]=== [2021-05-21 17:50:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:48,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1798932183, now seen corresponding path program 143 times [2021-05-21 17:50:48,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:48,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771203678] [2021-05-21 17:50:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:48,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:48,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771203678] [2021-05-21 17:50:48,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771203678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:48,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:48,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:48,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424297386] [2021-05-21 17:50:48,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:48,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:48,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:48,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:48,604 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 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) [2021-05-21 17:50:49,413 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:49,568 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:49,702 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:50:49,871 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:50:50,051 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:50:50,262 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:50:50,601 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:50,764 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:50,940 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:51,135 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:51,306 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:51,517 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:51,884 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:50:52,051 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:50:52,194 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:50:52,369 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:50:52,537 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:50:52,721 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:50:52,882 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:53,021 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:50:53,195 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:50:53,347 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:53,515 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:53,525 INFO L93 Difference]: Finished difference Result 11534 states and 29067 transitions. [2021-05-21 17:50:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:50:53,525 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 [2021-05-21 17:50:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:53,532 INFO L225 Difference]: With dead ends: 11534 [2021-05-21 17:50:53,532 INFO L226 Difference]: Without dead ends: 11534 [2021-05-21 17:50:53,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4375.5ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:50:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2021-05-21 17:50:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 4510. [2021-05-21 17:50:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-05-21 17:50:53,595 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-05-21 17:50:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:53,595 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-05-21 17:50:53,595 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) [2021-05-21 17:50:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-05-21 17:50:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:53,598 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:53,598 INFO L521 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] [2021-05-21 17:50:53,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-21 17:50:53,598 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]=== [2021-05-21 17:50:53,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:53,599 INFO L82 PathProgramCache]: Analyzing trace with hash 531005811, now seen corresponding path program 144 times [2021-05-21 17:50:53,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:53,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162430836] [2021-05-21 17:50:53,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:54,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:54,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162430836] [2021-05-21 17:50:54,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162430836] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:54,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:54,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:54,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501096437] [2021-05-21 17:50:54,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:54,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:54,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:54,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:54,082 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 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) [2021-05-21 17:50:54,910 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:50:55,064 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:50:55,197 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:50:55,367 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:50:55,767 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:55,905 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:56,068 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:56,247 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:50:56,443 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:50:56,613 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:50:56,820 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:50:57,197 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:50:57,348 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:50:57,492 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:50:57,651 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:50:57,804 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:50:57,970 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:50:58,117 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:50:58,256 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:50:58,415 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:50:58,565 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:50:58,718 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:50:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:50:58,727 INFO L93 Difference]: Finished difference Result 11578 states and 29165 transitions. [2021-05-21 17:50:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 17:50:58,728 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 [2021-05-21 17:50:58,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:50:58,735 INFO L225 Difference]: With dead ends: 11578 [2021-05-21 17:50:58,735 INFO L226 Difference]: Without dead ends: 11578 [2021-05-21 17:50:58,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4109.8ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 17:50:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11578 states. [2021-05-21 17:50:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11578 to 4486. [2021-05-21 17:50:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4484 states have (on average 2.6732827832292596) internal successors, (11987), 4485 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:50:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 11987 transitions. [2021-05-21 17:50:58,800 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 11987 transitions. Word has length 94 [2021-05-21 17:50:58,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:50:58,800 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 11987 transitions. [2021-05-21 17:50:58,800 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) [2021-05-21 17:50:58,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 11987 transitions. [2021-05-21 17:50:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:50:58,803 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:50:58,803 INFO L521 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] [2021-05-21 17:50:58,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-21 17:50:58,803 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]=== [2021-05-21 17:50:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:50:58,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1570959339, now seen corresponding path program 145 times [2021-05-21 17:50:58,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:50:58,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42247171] [2021-05-21 17:50:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:50:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:50:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:50:59,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:50:59,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42247171] [2021-05-21 17:50:59,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42247171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:50:59,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:50:59,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:50:59,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704073105] [2021-05-21 17:50:59,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:50:59,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:50:59,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:50:59,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:50:59,306 INFO L87 Difference]: Start difference. First operand 4486 states and 11987 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) [2021-05-21 17:51:00,115 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:00,270 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:51:00,628 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:00,773 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:00,912 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:01,078 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:01,273 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:01,467 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:01,636 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:01,841 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:02,173 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:51:02,317 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:51:02,468 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:51:02,598 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:02,739 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:51:02,887 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:02,893 INFO L93 Difference]: Finished difference Result 10182 states and 25833 transitions. [2021-05-21 17:51:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:51:02,894 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 [2021-05-21 17:51:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:02,902 INFO L225 Difference]: With dead ends: 10182 [2021-05-21 17:51:02,902 INFO L226 Difference]: Without dead ends: 10182 [2021-05-21 17:51:02,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3163.0ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:51:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2021-05-21 17:51:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 4462. [2021-05-21 17:51:02,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.67152466367713) internal successors, (11915), 4461 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11915 transitions. [2021-05-21 17:51:02,963 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11915 transitions. Word has length 94 [2021-05-21 17:51:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:02,964 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11915 transitions. [2021-05-21 17:51:02,964 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) [2021-05-21 17:51:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11915 transitions. [2021-05-21 17:51:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:02,967 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:02,967 INFO L521 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] [2021-05-21 17:51:02,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-21 17:51:02,967 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]=== [2021-05-21 17:51:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:02,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1220806401, now seen corresponding path program 146 times [2021-05-21 17:51:02,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:02,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62347525] [2021-05-21 17:51:02,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:03,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:03,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62347525] [2021-05-21 17:51:03,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62347525] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:03,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:03,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:03,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475993032] [2021-05-21 17:51:03,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:03,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:03,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:03,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:03,417 INFO L87 Difference]: Start difference. First operand 4462 states and 11915 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) [2021-05-21 17:51:04,472 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:04,638 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:04,803 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:51:05,004 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:51:05,205 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:51:05,719 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-05-21 17:51:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:06,178 INFO L93 Difference]: Finished difference Result 8182 states and 20790 transitions. [2021-05-21 17:51:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:51:06,179 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 [2021-05-21 17:51:06,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:06,184 INFO L225 Difference]: With dead ends: 8182 [2021-05-21 17:51:06,184 INFO L226 Difference]: Without dead ends: 8182 [2021-05-21 17:51:06,184 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2427.7ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:51:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8182 states. [2021-05-21 17:51:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8182 to 4472. [2021-05-21 17:51:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 2.6711409395973154) internal successors, (11940), 4471 states have internal predecessors, (11940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 11940 transitions. [2021-05-21 17:51:06,235 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 11940 transitions. Word has length 94 [2021-05-21 17:51:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:06,235 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 11940 transitions. [2021-05-21 17:51:06,235 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) [2021-05-21 17:51:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 11940 transitions. [2021-05-21 17:51:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:06,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:06,238 INFO L521 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] [2021-05-21 17:51:06,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-21 17:51:06,238 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]=== [2021-05-21 17:51:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:06,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1305625141, now seen corresponding path program 147 times [2021-05-21 17:51:06,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:06,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445743397] [2021-05-21 17:51:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:06,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:06,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445743397] [2021-05-21 17:51:06,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445743397] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:06,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:06,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:06,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256976870] [2021-05-21 17:51:06,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:06,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:06,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:06,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:06,683 INFO L87 Difference]: Start difference. First operand 4472 states and 11940 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) [2021-05-21 17:51:07,748 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:07,931 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:08,112 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:08,302 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:08,469 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:08,677 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:09,682 INFO L93 Difference]: Finished difference Result 8456 states and 21317 transitions. [2021-05-21 17:51:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:51:09,683 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 [2021-05-21 17:51:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:09,689 INFO L225 Difference]: With dead ends: 8456 [2021-05-21 17:51:09,689 INFO L226 Difference]: Without dead ends: 8456 [2021-05-21 17:51:09,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2576.9ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:51:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8456 states. [2021-05-21 17:51:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8456 to 4470. [2021-05-21 17:51:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.671217547000895) internal successors, (11935), 4469 states have internal predecessors, (11935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11935 transitions. [2021-05-21 17:51:09,744 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11935 transitions. Word has length 94 [2021-05-21 17:51:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:09,744 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11935 transitions. [2021-05-21 17:51:09,745 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) [2021-05-21 17:51:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11935 transitions. [2021-05-21 17:51:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:09,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:09,748 INFO L521 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] [2021-05-21 17:51:09,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-21 17:51:09,748 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]=== [2021-05-21 17:51:09,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1840877311, now seen corresponding path program 148 times [2021-05-21 17:51:09,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:09,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149879785] [2021-05-21 17:51:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:10,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:10,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149879785] [2021-05-21 17:51:10,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149879785] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:10,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:10,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:10,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757294677] [2021-05-21 17:51:10,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:10,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:10,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:10,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:10,226 INFO L87 Difference]: Start difference. First operand 4470 states and 11935 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) [2021-05-21 17:51:11,299 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:11,461 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:11,631 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:11,805 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:12,006 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:12,175 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:12,414 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:13,414 INFO L93 Difference]: Finished difference Result 8522 states and 21461 transitions. [2021-05-21 17:51:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 17:51:13,415 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 [2021-05-21 17:51:13,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:13,420 INFO L225 Difference]: With dead ends: 8522 [2021-05-21 17:51:13,420 INFO L226 Difference]: Without dead ends: 8522 [2021-05-21 17:51:13,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2774.4ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 17:51:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2021-05-21 17:51:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 4466. [2021-05-21 17:51:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.6713709677419355) internal successors, (11925), 4465 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11925 transitions. [2021-05-21 17:51:13,472 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11925 transitions. Word has length 94 [2021-05-21 17:51:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:13,472 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11925 transitions. [2021-05-21 17:51:13,472 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) [2021-05-21 17:51:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11925 transitions. [2021-05-21 17:51:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:13,475 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:13,475 INFO L521 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] [2021-05-21 17:51:13,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-21 17:51:13,476 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]=== [2021-05-21 17:51:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1264475649, now seen corresponding path program 149 times [2021-05-21 17:51:13,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:13,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17689565] [2021-05-21 17:51:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:13,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:13,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17689565] [2021-05-21 17:51:13,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17689565] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:13,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:13,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:13,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322526811] [2021-05-21 17:51:13,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:13,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:13,947 INFO L87 Difference]: Start difference. First operand 4466 states and 11925 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) [2021-05-21 17:51:14,996 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:15,144 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:15,285 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:15,448 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:15,629 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:15,828 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:15,995 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:16,201 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:16,868 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-05-21 17:51:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:17,208 INFO L93 Difference]: Finished difference Result 8588 states and 21605 transitions. [2021-05-21 17:51:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 17:51:17,208 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 [2021-05-21 17:51:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:17,214 INFO L225 Difference]: With dead ends: 8588 [2021-05-21 17:51:17,214 INFO L226 Difference]: Without dead ends: 8588 [2021-05-21 17:51:17,214 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2909.1ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 17:51:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2021-05-21 17:51:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 4464. [2021-05-21 17:51:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4462 states have (on average 2.6714477812640074) internal successors, (11920), 4463 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 11920 transitions. [2021-05-21 17:51:17,267 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 11920 transitions. Word has length 94 [2021-05-21 17:51:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:17,267 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 11920 transitions. [2021-05-21 17:51:17,267 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) [2021-05-21 17:51:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 11920 transitions. [2021-05-21 17:51:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:17,270 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:17,270 INFO L521 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] [2021-05-21 17:51:17,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-21 17:51:17,270 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]=== [2021-05-21 17:51:17,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:17,270 INFO L82 PathProgramCache]: Analyzing trace with hash -997465141, now seen corresponding path program 150 times [2021-05-21 17:51:17,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:17,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209683383] [2021-05-21 17:51:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:17,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:17,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209683383] [2021-05-21 17:51:17,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209683383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:17,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:17,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:17,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816023117] [2021-05-21 17:51:17,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:17,756 INFO L87 Difference]: Start difference. First operand 4464 states and 11920 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) [2021-05-21 17:51:18,843 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:18,980 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:51:19,127 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:19,265 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:19,438 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:19,620 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:19,818 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:19,986 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:20,196 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:21,173 INFO L93 Difference]: Finished difference Result 8244 states and 20924 transitions. [2021-05-21 17:51:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 17:51:21,174 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 [2021-05-21 17:51:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:21,179 INFO L225 Difference]: With dead ends: 8244 [2021-05-21 17:51:21,179 INFO L226 Difference]: Without dead ends: 8244 [2021-05-21 17:51:21,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3021.0ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 17:51:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2021-05-21 17:51:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 4462. [2021-05-21 17:51:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.67152466367713) internal successors, (11915), 4461 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11915 transitions. [2021-05-21 17:51:21,243 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11915 transitions. Word has length 94 [2021-05-21 17:51:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:21,243 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11915 transitions. [2021-05-21 17:51:21,243 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) [2021-05-21 17:51:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11915 transitions. [2021-05-21 17:51:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:21,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:21,246 INFO L521 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] [2021-05-21 17:51:21,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-21 17:51:21,246 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]=== [2021-05-21 17:51:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1626842101, now seen corresponding path program 151 times [2021-05-21 17:51:21,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:21,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364515456] [2021-05-21 17:51:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:21,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:21,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364515456] [2021-05-21 17:51:21,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364515456] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:21,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:21,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:21,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414199682] [2021-05-21 17:51:21,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:21,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:21,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:21,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:21,747 INFO L87 Difference]: Start difference. First operand 4462 states and 11915 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) [2021-05-21 17:51:22,543 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:22,810 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:22,941 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:51:23,114 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:51:23,294 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:51:23,503 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:51:23,664 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:51:23,873 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:51:24,172 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:51:24,328 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:24,509 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:24,737 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:51:24,906 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:25,114 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:51:25,447 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:51:25,631 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:51:25,772 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:51:25,963 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-05-21 17:51:26,099 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:51:26,296 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-05-21 17:51:26,429 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:51:26,617 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-05-21 17:51:26,751 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:51:26,934 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:51:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:26,944 INFO L93 Difference]: Finished difference Result 8705 states and 22216 transitions. [2021-05-21 17:51:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 17:51:26,944 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 [2021-05-21 17:51:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:26,950 INFO L225 Difference]: With dead ends: 8705 [2021-05-21 17:51:26,950 INFO L226 Difference]: Without dead ends: 8705 [2021-05-21 17:51:26,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 4635.7ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 17:51:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2021-05-21 17:51:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 4522. [2021-05-21 17:51:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-05-21 17:51:27,001 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-05-21 17:51:27,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:27,001 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-05-21 17:51:27,001 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) [2021-05-21 17:51:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-05-21 17:51:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:27,004 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:27,004 INFO L521 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] [2021-05-21 17:51:27,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-21 17:51:27,004 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]=== [2021-05-21 17:51:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:27,005 INFO L82 PathProgramCache]: Analyzing trace with hash -589022203, now seen corresponding path program 152 times [2021-05-21 17:51:27,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:27,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338019087] [2021-05-21 17:51:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:27,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:27,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338019087] [2021-05-21 17:51:27,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338019087] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:27,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:27,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:27,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790837548] [2021-05-21 17:51:27,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:27,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:27,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:27,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:27,505 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 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) [2021-05-21 17:51:28,329 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:28,604 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:28,737 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:51:28,911 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:51:29,093 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-05-21 17:51:29,289 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:51:29,621 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:51:29,778 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:29,959 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:30,155 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:30,350 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:30,521 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:30,740 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:31,281 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-05-21 17:51:31,418 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:51:31,592 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-05-21 17:51:31,729 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:51:31,909 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-05-21 17:51:32,070 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:32,195 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:51:32,367 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:51:32,681 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:32,690 INFO L93 Difference]: Finished difference Result 8974 states and 22676 transitions. [2021-05-21 17:51:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 17:51:32,690 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 [2021-05-21 17:51:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:32,695 INFO L225 Difference]: With dead ends: 8974 [2021-05-21 17:51:32,695 INFO L226 Difference]: Without dead ends: 8974 [2021-05-21 17:51:32,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4544.6ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 17:51:32,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8974 states. [2021-05-21 17:51:32,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8974 to 4510. [2021-05-21 17:51:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-05-21 17:51:32,749 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-05-21 17:51:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:32,749 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-05-21 17:51:32,749 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) [2021-05-21 17:51:32,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-05-21 17:51:32,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:32,752 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:32,752 INFO L521 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] [2021-05-21 17:51:32,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-21 17:51:32,752 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]=== [2021-05-21 17:51:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:32,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1740915791, now seen corresponding path program 153 times [2021-05-21 17:51:32,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:32,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152101674] [2021-05-21 17:51:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:33,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:33,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152101674] [2021-05-21 17:51:33,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152101674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:33,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:33,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:33,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994531817] [2021-05-21 17:51:33,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:33,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:33,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:33,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:33,249 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 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) [2021-05-21 17:51:34,052 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:34,322 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:34,466 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:51:34,639 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:51:35,163 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:35,300 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:35,477 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:35,662 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:35,856 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:36,026 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:36,235 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:36,587 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:51:36,738 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:51:36,882 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:51:37,040 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:51:37,178 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:51:37,343 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-05-21 17:51:37,491 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:37,617 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:51:37,773 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-05-21 17:51:37,909 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:51:38,061 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:38,071 INFO L93 Difference]: Finished difference Result 9018 states and 22774 transitions. [2021-05-21 17:51:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 17:51:38,071 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 [2021-05-21 17:51:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:38,076 INFO L225 Difference]: With dead ends: 9018 [2021-05-21 17:51:38,076 INFO L226 Difference]: Without dead ends: 9018 [2021-05-21 17:51:38,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4281.8ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 17:51:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9018 states. [2021-05-21 17:51:38,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9018 to 4486. [2021-05-21 17:51:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4484 states have (on average 2.6732827832292596) internal successors, (11987), 4485 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 11987 transitions. [2021-05-21 17:51:38,130 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 11987 transitions. Word has length 94 [2021-05-21 17:51:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:38,130 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 11987 transitions. [2021-05-21 17:51:38,130 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) [2021-05-21 17:51:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 11987 transitions. [2021-05-21 17:51:38,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:38,133 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:38,133 INFO L521 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] [2021-05-21 17:51:38,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-21 17:51:38,133 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]=== [2021-05-21 17:51:38,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash -361049359, now seen corresponding path program 154 times [2021-05-21 17:51:38,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:38,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962261471] [2021-05-21 17:51:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:38,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:38,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962261471] [2021-05-21 17:51:38,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962261471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:38,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:38,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:38,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824775816] [2021-05-21 17:51:38,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:38,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:38,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:38,632 INFO L87 Difference]: Start difference. First operand 4486 states and 11987 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) [2021-05-21 17:51:39,464 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-05-21 17:51:39,735 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-05-21 17:51:40,163 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:40,434 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:40,574 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:40,757 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:40,938 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:41,133 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:41,314 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:41,523 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:42,034 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:51:42,164 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:51:42,308 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-05-21 17:51:42,444 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:51:42,595 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-05-21 17:51:42,729 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:42,854 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:51:42,995 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-05-21 17:51:43,269 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:43,278 INFO L93 Difference]: Finished difference Result 9073 states and 22895 transitions. [2021-05-21 17:51:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 17:51:43,278 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 [2021-05-21 17:51:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:43,284 INFO L225 Difference]: With dead ends: 9073 [2021-05-21 17:51:43,284 INFO L226 Difference]: Without dead ends: 9073 [2021-05-21 17:51:43,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4015.6ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 17:51:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2021-05-21 17:51:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 4474. [2021-05-21 17:51:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 2.672406082289803) internal successors, (11951), 4473 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11951 transitions. [2021-05-21 17:51:43,339 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11951 transitions. Word has length 94 [2021-05-21 17:51:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:43,339 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 11951 transitions. [2021-05-21 17:51:43,339 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) [2021-05-21 17:51:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11951 transitions. [2021-05-21 17:51:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:43,342 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:43,342 INFO L521 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] [2021-05-21 17:51:43,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-21 17:51:43,342 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]=== [2021-05-21 17:51:43,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash 892831425, now seen corresponding path program 155 times [2021-05-21 17:51:43,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:43,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746658256] [2021-05-21 17:51:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:43,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:43,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746658256] [2021-05-21 17:51:43,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746658256] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:43,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:43,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:43,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572728813] [2021-05-21 17:51:43,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:43,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:43,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:43,859 INFO L87 Difference]: Start difference. First operand 4474 states and 11951 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) [2021-05-21 17:51:45,099 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:51:45,376 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-05-21 17:51:45,514 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-05-21 17:51:45,694 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:45,868 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:46,061 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-05-21 17:51:46,229 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:46,431 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:51:46,742 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-05-21 17:51:46,871 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-05-21 17:51:47,007 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-05-21 17:51:47,251 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-05-21 17:51:47,386 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-05-21 17:51:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:47,392 INFO L93 Difference]: Finished difference Result 7530 states and 19192 transitions. [2021-05-21 17:51:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 17:51:47,392 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 [2021-05-21 17:51:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:47,397 INFO L225 Difference]: With dead ends: 7530 [2021-05-21 17:51:47,397 INFO L226 Difference]: Without dead ends: 7530 [2021-05-21 17:51:47,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3175.6ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 17:51:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2021-05-21 17:51:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 4450. [2021-05-21 17:51:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4448 states have (on average 2.670638489208633) internal successors, (11879), 4449 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 11879 transitions. [2021-05-21 17:51:47,449 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 11879 transitions. Word has length 94 [2021-05-21 17:51:47,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:47,449 INFO L482 AbstractCegarLoop]: Abstraction has 4450 states and 11879 transitions. [2021-05-21 17:51:47,449 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) [2021-05-21 17:51:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 11879 transitions. [2021-05-21 17:51:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:47,452 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:47,452 INFO L521 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] [2021-05-21 17:51:47,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-21 17:51:47,452 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]=== [2021-05-21 17:51:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:47,452 INFO L82 PathProgramCache]: Analyzing trace with hash -657056875, now seen corresponding path program 156 times [2021-05-21 17:51:47,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:47,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833182638] [2021-05-21 17:51:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:47,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:47,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833182638] [2021-05-21 17:51:47,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833182638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:47,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:47,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-21 17:51:47,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28135332] [2021-05-21 17:51:47,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-21 17:51:47,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:47,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-21 17:51:47,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:51:47,727 INFO L87 Difference]: Start difference. First operand 4450 states and 11879 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) [2021-05-21 17:51:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:48,597 INFO L93 Difference]: Finished difference Result 5363 states and 13672 transitions. [2021-05-21 17:51:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-21 17:51:48,597 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 [2021-05-21 17:51:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:48,602 INFO L225 Difference]: With dead ends: 5363 [2021-05-21 17:51:48,602 INFO L226 Difference]: Without dead ends: 5363 [2021-05-21 17:51:48,602 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 807.1ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-05-21 17:51:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-05-21 17:51:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 4472. [2021-05-21 17:51:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 2.6693512304250557) internal successors, (11932), 4471 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 11932 transitions. [2021-05-21 17:51:48,648 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 11932 transitions. Word has length 94 [2021-05-21 17:51:48,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:48,648 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 11932 transitions. [2021-05-21 17:51:48,648 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) [2021-05-21 17:51:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 11932 transitions. [2021-05-21 17:51:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:48,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:48,651 INFO L521 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] [2021-05-21 17:51:48,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-21 17:51:48,652 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]=== [2021-05-21 17:51:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1162939367, now seen corresponding path program 157 times [2021-05-21 17:51:48,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:48,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105524546] [2021-05-21 17:51:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:49,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:49,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105524546] [2021-05-21 17:51:49,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105524546] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:49,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:49,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:49,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660363523] [2021-05-21 17:51:49,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:49,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:49,083 INFO L87 Difference]: Start difference. First operand 4472 states and 11932 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) [2021-05-21 17:51:49,993 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:51:50,314 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:50,478 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:51:50,661 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:51:50,849 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:51:51,103 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:51:51,249 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:51:51,396 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:51:51,548 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:51:51,680 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:51:51,824 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:51:51,974 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:51:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:51,980 INFO L93 Difference]: Finished difference Result 8380 states and 21504 transitions. [2021-05-21 17:51:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:51:51,980 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 [2021-05-21 17:51:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:51,987 INFO L225 Difference]: With dead ends: 8380 [2021-05-21 17:51:51,988 INFO L226 Difference]: Without dead ends: 8380 [2021-05-21 17:51:51,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2602.4ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:51:51,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2021-05-21 17:51:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 4640. [2021-05-21 17:51:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4638 states have (on average 2.68132815868909) internal successors, (12436), 4639 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 12436 transitions. [2021-05-21 17:51:52,065 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 12436 transitions. Word has length 94 [2021-05-21 17:51:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:52,065 INFO L482 AbstractCegarLoop]: Abstraction has 4640 states and 12436 transitions. [2021-05-21 17:51:52,065 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) [2021-05-21 17:51:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 12436 transitions. [2021-05-21 17:51:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:52,068 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:52,068 INFO L521 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] [2021-05-21 17:51:52,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-21 17:51:52,068 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]=== [2021-05-21 17:51:52,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:52,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1297759173, now seen corresponding path program 158 times [2021-05-21 17:51:52,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:52,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076683555] [2021-05-21 17:51:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:52,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:52,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076683555] [2021-05-21 17:51:52,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076683555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:52,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:52,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:52,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698238807] [2021-05-21 17:51:52,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:52,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:52,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:52,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:52,509 INFO L87 Difference]: Start difference. First operand 4640 states and 12436 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) [2021-05-21 17:51:53,401 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:51:53,596 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:51:53,915 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:51:54,096 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:51:54,298 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:51:54,572 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:51:54,740 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:51:54,908 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:51:55,082 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:51:55,235 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:51:55,400 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:51:55,571 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:51:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:55,577 INFO L93 Difference]: Finished difference Result 8386 states and 21522 transitions. [2021-05-21 17:51:55,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:51:55,577 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 [2021-05-21 17:51:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:55,583 INFO L225 Difference]: With dead ends: 8386 [2021-05-21 17:51:55,583 INFO L226 Difference]: Without dead ends: 8386 [2021-05-21 17:51:55,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2778.2ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:51:55,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2021-05-21 17:51:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 4676. [2021-05-21 17:51:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4674 states have (on average 2.683782627299957) internal successors, (12544), 4675 states have internal predecessors, (12544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 12544 transitions. [2021-05-21 17:51:55,636 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 12544 transitions. Word has length 94 [2021-05-21 17:51:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:55,637 INFO L482 AbstractCegarLoop]: Abstraction has 4676 states and 12544 transitions. [2021-05-21 17:51:55,637 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) [2021-05-21 17:51:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 12544 transitions. [2021-05-21 17:51:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:55,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:55,640 INFO L521 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] [2021-05-21 17:51:55,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-21 17:51:55,640 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]=== [2021-05-21 17:51:55,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:55,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1587864551, now seen corresponding path program 159 times [2021-05-21 17:51:55,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:55,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710832001] [2021-05-21 17:51:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:56,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:56,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710832001] [2021-05-21 17:51:56,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710832001] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:56,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:56,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:56,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934933094] [2021-05-21 17:51:56,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:56,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:56,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:56,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:56,083 INFO L87 Difference]: Start difference. First operand 4676 states and 12544 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) [2021-05-21 17:51:56,998 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:51:57,194 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:51:57,387 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:51:57,585 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:51:57,918 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:51:58,105 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:51:58,396 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:51:58,583 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:51:58,795 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:51:58,982 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:51:59,171 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:51:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:51:59,177 INFO L93 Difference]: Finished difference Result 8074 states and 20938 transitions. [2021-05-21 17:51:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:51:59,178 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 [2021-05-21 17:51:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:51:59,182 INFO L225 Difference]: With dead ends: 8074 [2021-05-21 17:51:59,182 INFO L226 Difference]: Without dead ends: 8074 [2021-05-21 17:51:59,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2781.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:51:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2021-05-21 17:51:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 4568. [2021-05-21 17:51:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.676303109943057) internal successors, (12220), 4567 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:51:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12220 transitions. [2021-05-21 17:51:59,230 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12220 transitions. Word has length 94 [2021-05-21 17:51:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:51:59,230 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12220 transitions. [2021-05-21 17:51:59,230 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) [2021-05-21 17:51:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12220 transitions. [2021-05-21 17:51:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:51:59,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:51:59,233 INFO L521 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] [2021-05-21 17:51:59,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-21 17:51:59,233 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]=== [2021-05-21 17:51:59,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:51:59,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1276778039, now seen corresponding path program 160 times [2021-05-21 17:51:59,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:51:59,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60660083] [2021-05-21 17:51:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:51:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:51:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:51:59,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:51:59,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60660083] [2021-05-21 17:51:59,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60660083] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:51:59,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:51:59,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:51:59,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63020819] [2021-05-21 17:51:59,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:51:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:51:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:51:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:51:59,655 INFO L87 Difference]: Start difference. First operand 4568 states and 12220 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) [2021-05-21 17:52:00,887 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:01,067 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:52:01,254 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:52:01,449 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:01,929 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:52:02,063 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:52:02,303 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:52:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:02,440 INFO L93 Difference]: Finished difference Result 7318 states and 18856 transitions. [2021-05-21 17:52:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:02,441 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 [2021-05-21 17:52:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:02,446 INFO L225 Difference]: With dead ends: 7318 [2021-05-21 17:52:02,446 INFO L226 Difference]: Without dead ends: 7318 [2021-05-21 17:52:02,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2455.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-05-21 17:52:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 4574. [2021-05-21 17:52:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4572 states have (on average 2.676071741032371) internal successors, (12235), 4573 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12235 transitions. [2021-05-21 17:52:02,495 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12235 transitions. Word has length 94 [2021-05-21 17:52:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:02,495 INFO L482 AbstractCegarLoop]: Abstraction has 4574 states and 12235 transitions. [2021-05-21 17:52:02,495 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) [2021-05-21 17:52:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12235 transitions. [2021-05-21 17:52:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:02,498 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:02,498 INFO L521 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] [2021-05-21 17:52:02,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-21 17:52:02,498 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]=== [2021-05-21 17:52:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:02,499 INFO L82 PathProgramCache]: Analyzing trace with hash -623118413, now seen corresponding path program 161 times [2021-05-21 17:52:02,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:02,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456916586] [2021-05-21 17:52:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:02,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:02,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456916586] [2021-05-21 17:52:02,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456916586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:02,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:02,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:02,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754580869] [2021-05-21 17:52:02,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:02,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:02,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:02,937 INFO L87 Difference]: Start difference. First operand 4574 states and 12235 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) [2021-05-21 17:52:03,835 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:04,163 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:04,327 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:52:04,512 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:52:04,702 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:04,964 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:52:05,110 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:52:05,271 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:52:05,425 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:52:05,559 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:05,703 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:52:05,854 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:52:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:05,860 INFO L93 Difference]: Finished difference Result 9526 states and 24379 transitions. [2021-05-21 17:52:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:05,861 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 [2021-05-21 17:52:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:05,867 INFO L225 Difference]: With dead ends: 9526 [2021-05-21 17:52:05,867 INFO L226 Difference]: Without dead ends: 9526 [2021-05-21 17:52:05,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2629.4ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:05,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2021-05-21 17:52:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 4670. [2021-05-21 17:52:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4668 states have (on average 2.6827335047129393) internal successors, (12523), 4669 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 12523 transitions. [2021-05-21 17:52:05,927 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 12523 transitions. Word has length 94 [2021-05-21 17:52:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:05,927 INFO L482 AbstractCegarLoop]: Abstraction has 4670 states and 12523 transitions. [2021-05-21 17:52:05,927 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) [2021-05-21 17:52:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 12523 transitions. [2021-05-21 17:52:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:05,930 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:05,930 INFO L521 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] [2021-05-21 17:52:05,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-21 17:52:05,930 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]=== [2021-05-21 17:52:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:05,931 INFO L82 PathProgramCache]: Analyzing trace with hash -757938219, now seen corresponding path program 162 times [2021-05-21 17:52:05,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:05,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608517165] [2021-05-21 17:52:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:06,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:06,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608517165] [2021-05-21 17:52:06,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608517165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:06,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:06,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:06,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062817988] [2021-05-21 17:52:06,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:06,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:06,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:06,357 INFO L87 Difference]: Start difference. First operand 4670 states and 12523 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) [2021-05-21 17:52:07,280 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:07,497 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:52:07,836 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:52:08,018 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:52:08,207 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:08,502 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:52:08,667 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:52:08,834 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:52:09,008 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:52:09,161 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:52:09,326 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:52:09,497 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:52:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:09,504 INFO L93 Difference]: Finished difference Result 10578 states and 26952 transitions. [2021-05-21 17:52:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:09,504 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 [2021-05-21 17:52:09,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:09,512 INFO L225 Difference]: With dead ends: 10578 [2021-05-21 17:52:09,512 INFO L226 Difference]: Without dead ends: 10578 [2021-05-21 17:52:09,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2760.4ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-05-21 17:52:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 4706. [2021-05-21 17:52:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4704 states have (on average 2.6851615646258504) internal successors, (12631), 4705 states have internal predecessors, (12631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 12631 transitions. [2021-05-21 17:52:09,592 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 12631 transitions. Word has length 94 [2021-05-21 17:52:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:09,592 INFO L482 AbstractCegarLoop]: Abstraction has 4706 states and 12631 transitions. [2021-05-21 17:52:09,592 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) [2021-05-21 17:52:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 12631 transitions. [2021-05-21 17:52:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:09,595 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:09,595 INFO L521 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] [2021-05-21 17:52:09,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-21 17:52:09,595 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]=== [2021-05-21 17:52:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1048043597, now seen corresponding path program 163 times [2021-05-21 17:52:09,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:09,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860343454] [2021-05-21 17:52:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:10,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:10,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860343454] [2021-05-21 17:52:10,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860343454] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:10,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:10,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:10,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595579322] [2021-05-21 17:52:10,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:10,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:10,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:10,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:10,040 INFO L87 Difference]: Start difference. First operand 4706 states and 12631 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) [2021-05-21 17:52:10,948 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:11,154 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:52:11,351 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:52:11,554 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:52:11,929 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:52:12,116 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:12,409 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:52:12,596 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:52:12,791 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:52:12,980 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:52:13,166 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:13,173 INFO L93 Difference]: Finished difference Result 10266 states and 26368 transitions. [2021-05-21 17:52:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:52:13,173 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 [2021-05-21 17:52:13,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:13,180 INFO L225 Difference]: With dead ends: 10266 [2021-05-21 17:52:13,180 INFO L226 Difference]: Without dead ends: 10266 [2021-05-21 17:52:13,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2810.9ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:52:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10266 states. [2021-05-21 17:52:13,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10266 to 4598. [2021-05-21 17:52:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4598 states, 4596 states have (on average 2.677763272410792) internal successors, (12307), 4597 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 12307 transitions. [2021-05-21 17:52:13,240 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 12307 transitions. Word has length 94 [2021-05-21 17:52:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:13,240 INFO L482 AbstractCegarLoop]: Abstraction has 4598 states and 12307 transitions. [2021-05-21 17:52:13,240 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) [2021-05-21 17:52:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 12307 transitions. [2021-05-21 17:52:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:13,243 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:13,243 INFO L521 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] [2021-05-21 17:52:13,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-21 17:52:13,244 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]=== [2021-05-21 17:52:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:13,244 INFO L82 PathProgramCache]: Analyzing trace with hash 577631, now seen corresponding path program 164 times [2021-05-21 17:52:13,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:13,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477825672] [2021-05-21 17:52:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:13,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:13,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477825672] [2021-05-21 17:52:13,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477825672] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:13,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:13,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:13,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790106058] [2021-05-21 17:52:13,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:13,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:13,667 INFO L87 Difference]: Start difference. First operand 4598 states and 12307 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) [2021-05-21 17:52:14,864 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:52:15,045 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:52:15,238 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:52:15,437 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:52:15,828 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:52:15,962 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:52:16,100 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:52:16,228 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-05-21 17:52:16,361 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:52:16,504 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:52:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:16,513 INFO L93 Difference]: Finished difference Result 9082 states and 23184 transitions. [2021-05-21 17:52:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:16,513 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 [2021-05-21 17:52:16,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:16,519 INFO L225 Difference]: With dead ends: 9082 [2021-05-21 17:52:16,519 INFO L226 Difference]: Without dead ends: 9082 [2021-05-21 17:52:16,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2532.3ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2021-05-21 17:52:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 4602. [2021-05-21 17:52:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 4600 states have (on average 2.677608695652174) internal successors, (12317), 4601 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 12317 transitions. [2021-05-21 17:52:16,575 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 12317 transitions. Word has length 94 [2021-05-21 17:52:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:16,575 INFO L482 AbstractCegarLoop]: Abstraction has 4602 states and 12317 transitions. [2021-05-21 17:52:16,575 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) [2021-05-21 17:52:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 12317 transitions. [2021-05-21 17:52:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:16,578 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:16,578 INFO L521 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] [2021-05-21 17:52:16,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-21 17:52:16,578 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]=== [2021-05-21 17:52:16,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:16,578 INFO L82 PathProgramCache]: Analyzing trace with hash -59090953, now seen corresponding path program 165 times [2021-05-21 17:52:16,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:16,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136679575] [2021-05-21 17:52:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:17,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:17,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136679575] [2021-05-21 17:52:17,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136679575] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:17,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:17,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:17,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379028456] [2021-05-21 17:52:17,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:17,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:17,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:17,003 INFO L87 Difference]: Start difference. First operand 4602 states and 12317 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) [2021-05-21 17:52:18,213 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:18,389 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:52:18,587 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:52:18,784 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:52:19,189 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:52:19,321 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:52:19,461 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:52:19,711 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:52:19,852 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:52:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:19,861 INFO L93 Difference]: Finished difference Result 9244 states and 23499 transitions. [2021-05-21 17:52:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:19,861 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 [2021-05-21 17:52:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:19,867 INFO L225 Difference]: With dead ends: 9244 [2021-05-21 17:52:19,867 INFO L226 Difference]: Without dead ends: 9244 [2021-05-21 17:52:19,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2520.8ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2021-05-21 17:52:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 4604. [2021-05-21 17:52:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4602 states have (on average 2.6775315080399826) internal successors, (12322), 4603 states have internal predecessors, (12322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 12322 transitions. [2021-05-21 17:52:19,925 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 12322 transitions. Word has length 94 [2021-05-21 17:52:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:19,925 INFO L482 AbstractCegarLoop]: Abstraction has 4604 states and 12322 transitions. [2021-05-21 17:52:19,925 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) [2021-05-21 17:52:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 12322 transitions. [2021-05-21 17:52:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:19,928 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:19,928 INFO L521 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] [2021-05-21 17:52:19,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-21 17:52:19,928 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]=== [2021-05-21 17:52:19,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:19,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1621922793, now seen corresponding path program 166 times [2021-05-21 17:52:19,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:19,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195995960] [2021-05-21 17:52:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:20,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:20,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195995960] [2021-05-21 17:52:20,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195995960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:20,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:20,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:20,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500063815] [2021-05-21 17:52:20,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:20,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:20,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:20,391 INFO L87 Difference]: Start difference. First operand 4604 states and 12322 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) [2021-05-21 17:52:21,664 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:21,834 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:52:22,019 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:52:22,184 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:22,381 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:52:22,830 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:52:22,962 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:52:23,101 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:52:23,350 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:52:23,487 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:52:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:23,493 INFO L93 Difference]: Finished difference Result 9042 states and 23095 transitions. [2021-05-21 17:52:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:52:23,493 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 [2021-05-21 17:52:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:23,499 INFO L225 Difference]: With dead ends: 9042 [2021-05-21 17:52:23,499 INFO L226 Difference]: Without dead ends: 9042 [2021-05-21 17:52:23,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2702.2ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:52:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9042 states. [2021-05-21 17:52:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9042 to 4598. [2021-05-21 17:52:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4598 states, 4596 states have (on average 2.677763272410792) internal successors, (12307), 4597 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 12307 transitions. [2021-05-21 17:52:23,554 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 12307 transitions. Word has length 94 [2021-05-21 17:52:23,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:23,554 INFO L482 AbstractCegarLoop]: Abstraction has 4598 states and 12307 transitions. [2021-05-21 17:52:23,554 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) [2021-05-21 17:52:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 12307 transitions. [2021-05-21 17:52:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:23,557 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:23,557 INFO L521 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] [2021-05-21 17:52:23,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-21 17:52:23,557 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]=== [2021-05-21 17:52:23,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:23,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1418289783, now seen corresponding path program 167 times [2021-05-21 17:52:23,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:23,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173374762] [2021-05-21 17:52:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:23,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:23,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173374762] [2021-05-21 17:52:23,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173374762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:23,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:23,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:23,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346746899] [2021-05-21 17:52:23,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:23,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:23,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:23,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:23,981 INFO L87 Difference]: Start difference. First operand 4598 states and 12307 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) [2021-05-21 17:52:24,928 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:25,090 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:52:25,418 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:52:25,601 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:52:25,790 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:26,078 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:52:26,245 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:52:26,412 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:52:26,588 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:52:26,741 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:52:26,910 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:52:27,082 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:52:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:27,102 INFO L93 Difference]: Finished difference Result 9366 states and 23937 transitions. [2021-05-21 17:52:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:27,102 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 [2021-05-21 17:52:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:27,107 INFO L225 Difference]: With dead ends: 9366 [2021-05-21 17:52:27,107 INFO L226 Difference]: Without dead ends: 9366 [2021-05-21 17:52:27,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2773.4ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9366 states. [2021-05-21 17:52:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9366 to 4646. [2021-05-21 17:52:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4644 states have (on average 2.6810938845822565) internal successors, (12451), 4645 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 12451 transitions. [2021-05-21 17:52:27,165 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 12451 transitions. Word has length 94 [2021-05-21 17:52:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:27,165 INFO L482 AbstractCegarLoop]: Abstraction has 4646 states and 12451 transitions. [2021-05-21 17:52:27,165 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) [2021-05-21 17:52:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 12451 transitions. [2021-05-21 17:52:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:27,169 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:27,169 INFO L521 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] [2021-05-21 17:52:27,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-21 17:52:27,169 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]=== [2021-05-21 17:52:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:27,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1128184405, now seen corresponding path program 168 times [2021-05-21 17:52:27,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:27,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341984935] [2021-05-21 17:52:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:27,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:27,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341984935] [2021-05-21 17:52:27,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341984935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:27,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:27,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:27,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23643188] [2021-05-21 17:52:27,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:27,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:27,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:27,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:27,613 INFO L87 Difference]: Start difference. First operand 4646 states and 12451 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) [2021-05-21 17:52:28,547 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:28,713 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:52:28,911 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:52:29,114 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:52:29,481 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:52:29,670 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:29,970 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:52:30,157 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:52:30,352 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:52:30,543 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:52:30,731 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:52:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:30,737 INFO L93 Difference]: Finished difference Result 10040 states and 25733 transitions. [2021-05-21 17:52:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:52:30,738 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 [2021-05-21 17:52:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:30,745 INFO L225 Difference]: With dead ends: 10040 [2021-05-21 17:52:30,745 INFO L226 Difference]: Without dead ends: 10040 [2021-05-21 17:52:30,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2775.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:52:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2021-05-21 17:52:30,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 4610. [2021-05-21 17:52:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4608 states have (on average 2.6786024305555554) internal successors, (12343), 4609 states have internal predecessors, (12343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 12343 transitions. [2021-05-21 17:52:30,807 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 12343 transitions. Word has length 94 [2021-05-21 17:52:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:30,807 INFO L482 AbstractCegarLoop]: Abstraction has 4610 states and 12343 transitions. [2021-05-21 17:52:30,807 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) [2021-05-21 17:52:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 12343 transitions. [2021-05-21 17:52:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:30,810 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:30,810 INFO L521 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] [2021-05-21 17:52:30,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-21 17:52:30,810 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]=== [2021-05-21 17:52:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:30,810 INFO L82 PathProgramCache]: Analyzing trace with hash -769031747, now seen corresponding path program 169 times [2021-05-21 17:52:30,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:30,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968141522] [2021-05-21 17:52:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:31,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:31,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968141522] [2021-05-21 17:52:31,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968141522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:31,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:31,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:31,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031501402] [2021-05-21 17:52:31,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:31,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:31,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:31,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:31,249 INFO L87 Difference]: Start difference. First operand 4610 states and 12343 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) [2021-05-21 17:52:32,182 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:32,478 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:32,634 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:52:32,824 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:52:33,019 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:52:33,298 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:52:33,453 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:52:33,620 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:52:33,781 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:52:33,915 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:34,069 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:52:34,228 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:52:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:34,237 INFO L93 Difference]: Finished difference Result 8990 states and 22945 transitions. [2021-05-21 17:52:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:34,237 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 [2021-05-21 17:52:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:34,243 INFO L225 Difference]: With dead ends: 8990 [2021-05-21 17:52:34,243 INFO L226 Difference]: Without dead ends: 8990 [2021-05-21 17:52:34,244 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2686.9ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8990 states. [2021-05-21 17:52:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8990 to 4612. [2021-05-21 17:52:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4610 states have (on average 2.6785249457700653) internal successors, (12348), 4611 states have internal predecessors, (12348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 12348 transitions. [2021-05-21 17:52:34,299 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 12348 transitions. Word has length 94 [2021-05-21 17:52:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:34,299 INFO L482 AbstractCegarLoop]: Abstraction has 4612 states and 12348 transitions. [2021-05-21 17:52:34,300 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) [2021-05-21 17:52:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 12348 transitions. [2021-05-21 17:52:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:34,303 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:34,303 INFO L521 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] [2021-05-21 17:52:34,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-21 17:52:34,303 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]=== [2021-05-21 17:52:34,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash 999504007, now seen corresponding path program 170 times [2021-05-21 17:52:34,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:34,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533397562] [2021-05-21 17:52:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:34,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:34,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533397562] [2021-05-21 17:52:34,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533397562] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:34,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:34,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:34,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833791642] [2021-05-21 17:52:34,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:34,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:34,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:34,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:34,742 INFO L87 Difference]: Start difference. First operand 4612 states and 12348 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) [2021-05-21 17:52:35,662 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:35,961 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:36,124 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:52:36,304 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:52:36,470 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:36,663 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:52:36,960 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:52:37,111 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:52:37,267 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:52:37,433 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:52:37,576 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:37,733 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:52:37,890 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:52:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:37,896 INFO L93 Difference]: Finished difference Result 8972 states and 22907 transitions. [2021-05-21 17:52:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:52:37,897 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 [2021-05-21 17:52:37,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:37,904 INFO L225 Difference]: With dead ends: 8972 [2021-05-21 17:52:37,904 INFO L226 Difference]: Without dead ends: 8972 [2021-05-21 17:52:37,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2872.4ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:52:37,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2021-05-21 17:52:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 4610. [2021-05-21 17:52:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4608 states have (on average 2.6786024305555554) internal successors, (12343), 4609 states have internal predecessors, (12343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 12343 transitions. [2021-05-21 17:52:37,974 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 12343 transitions. Word has length 94 [2021-05-21 17:52:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:37,974 INFO L482 AbstractCegarLoop]: Abstraction has 4610 states and 12343 transitions. [2021-05-21 17:52:37,974 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) [2021-05-21 17:52:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 12343 transitions. [2021-05-21 17:52:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:37,978 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:37,978 INFO L521 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] [2021-05-21 17:52:37,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-21 17:52:37,978 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]=== [2021-05-21 17:52:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1674691015, now seen corresponding path program 171 times [2021-05-21 17:52:37,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:37,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651341450] [2021-05-21 17:52:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:38,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:38,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651341450] [2021-05-21 17:52:38,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651341450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:38,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:38,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:38,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090913107] [2021-05-21 17:52:38,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:38,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:38,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:38,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:38,440 INFO L87 Difference]: Start difference. First operand 4610 states and 12343 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) [2021-05-21 17:52:39,382 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:39,554 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:52:39,740 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-05-21 17:52:39,900 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:52:40,120 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-05-21 17:52:40,487 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-05-21 17:52:40,652 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:40,847 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-21 17:52:41,178 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-05-21 17:52:41,360 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-05-21 17:52:41,531 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:52:41,720 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-05-21 17:52:41,899 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:52:42,095 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-05-21 17:52:42,271 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-05-21 17:52:42,471 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:52:42,647 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:42,829 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:52:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:42,838 INFO L93 Difference]: Finished difference Result 9345 states and 23936 transitions. [2021-05-21 17:52:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 17:52:42,839 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 [2021-05-21 17:52:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:42,844 INFO L225 Difference]: With dead ends: 9345 [2021-05-21 17:52:42,844 INFO L226 Difference]: Without dead ends: 9345 [2021-05-21 17:52:42,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4000.2ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 17:52:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9345 states. [2021-05-21 17:52:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9345 to 4622. [2021-05-21 17:52:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4620 states have (on average 2.6794372294372293) internal successors, (12379), 4621 states have internal predecessors, (12379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 12379 transitions. [2021-05-21 17:52:42,900 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 12379 transitions. Word has length 94 [2021-05-21 17:52:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:42,900 INFO L482 AbstractCegarLoop]: Abstraction has 4622 states and 12379 transitions. [2021-05-21 17:52:42,900 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) [2021-05-21 17:52:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 12379 transitions. [2021-05-21 17:52:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:42,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:42,903 INFO L521 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] [2021-05-21 17:52:42,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-21 17:52:42,903 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]=== [2021-05-21 17:52:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1582456383, now seen corresponding path program 172 times [2021-05-21 17:52:42,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:42,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160845389] [2021-05-21 17:52:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:43,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:43,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160845389] [2021-05-21 17:52:43,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160845389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:43,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:43,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:43,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453033349] [2021-05-21 17:52:43,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:43,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:43,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:43,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:43,356 INFO L87 Difference]: Start difference. First operand 4622 states and 12379 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) [2021-05-21 17:52:44,263 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:52:44,451 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-21 17:52:44,633 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-05-21 17:52:44,953 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:52:45,130 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:52:45,296 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:45,496 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:52:45,807 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-05-21 17:52:45,979 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-05-21 17:52:46,159 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-21 17:52:46,317 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:52:46,487 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-05-21 17:52:46,668 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:46,674 INFO L93 Difference]: Finished difference Result 8514 states and 21855 transitions. [2021-05-21 17:52:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:52:46,675 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 [2021-05-21 17:52:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:46,681 INFO L225 Difference]: With dead ends: 8514 [2021-05-21 17:52:46,681 INFO L226 Difference]: Without dead ends: 8514 [2021-05-21 17:52:46,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3028.7ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:52:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8514 states. [2021-05-21 17:52:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8514 to 4574. [2021-05-21 17:52:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4572 states have (on average 2.676071741032371) internal successors, (12235), 4573 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12235 transitions. [2021-05-21 17:52:46,749 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12235 transitions. Word has length 94 [2021-05-21 17:52:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:46,749 INFO L482 AbstractCegarLoop]: Abstraction has 4574 states and 12235 transitions. [2021-05-21 17:52:46,749 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) [2021-05-21 17:52:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12235 transitions. [2021-05-21 17:52:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:46,752 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:46,752 INFO L521 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] [2021-05-21 17:52:46,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-21 17:52:46,752 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]=== [2021-05-21 17:52:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:46,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1663508767, now seen corresponding path program 173 times [2021-05-21 17:52:46,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:46,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896369103] [2021-05-21 17:52:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:47,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:47,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896369103] [2021-05-21 17:52:47,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896369103] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:47,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:47,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:47,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572086807] [2021-05-21 17:52:47,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:47,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:47,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:47,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:47,179 INFO L87 Difference]: Start difference. First operand 4574 states and 12235 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) [2021-05-21 17:52:48,317 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:52:48,504 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:52:48,695 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:52:48,909 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:52:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:49,819 INFO L93 Difference]: Finished difference Result 7817 states and 19924 transitions. [2021-05-21 17:52:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:49,819 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 [2021-05-21 17:52:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:49,824 INFO L225 Difference]: With dead ends: 7817 [2021-05-21 17:52:49,824 INFO L226 Difference]: Without dead ends: 7817 [2021-05-21 17:52:49,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2371.9ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2021-05-21 17:52:49,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 4576. [2021-05-21 17:52:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.675994752951465) internal successors, (12240), 4575 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12240 transitions. [2021-05-21 17:52:49,876 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12240 transitions. Word has length 94 [2021-05-21 17:52:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:49,876 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12240 transitions. [2021-05-21 17:52:49,876 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) [2021-05-21 17:52:49,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12240 transitions. [2021-05-21 17:52:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:49,879 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:49,879 INFO L521 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] [2021-05-21 17:52:49,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-21 17:52:49,879 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]=== [2021-05-21 17:52:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:49,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1268018171, now seen corresponding path program 174 times [2021-05-21 17:52:49,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:49,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378950200] [2021-05-21 17:52:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:50,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:50,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378950200] [2021-05-21 17:52:50,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378950200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:50,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:50,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:50,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227952617] [2021-05-21 17:52:50,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:50,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:50,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:50,305 INFO L87 Difference]: Start difference. First operand 4576 states and 12240 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) [2021-05-21 17:52:51,462 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:52:51,656 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:52:51,853 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:52:52,053 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:52:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:52,986 INFO L93 Difference]: Finished difference Result 7891 states and 20018 transitions. [2021-05-21 17:52:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:52,986 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 [2021-05-21 17:52:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:52,992 INFO L225 Difference]: With dead ends: 7891 [2021-05-21 17:52:52,992 INFO L226 Difference]: Without dead ends: 7891 [2021-05-21 17:52:52,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2368.2ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:53,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2021-05-21 17:52:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 4580. [2021-05-21 17:52:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.675840978593272) internal successors, (12250), 4579 states have internal predecessors, (12250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12250 transitions. [2021-05-21 17:52:53,048 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12250 transitions. Word has length 94 [2021-05-21 17:52:53,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:53,048 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12250 transitions. [2021-05-21 17:52:53,048 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) [2021-05-21 17:52:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12250 transitions. [2021-05-21 17:52:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:53,051 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:53,052 INFO L521 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] [2021-05-21 17:52:53,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-21 17:52:53,052 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]=== [2021-05-21 17:52:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2125568281, now seen corresponding path program 175 times [2021-05-21 17:52:53,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:53,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090680056] [2021-05-21 17:52:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:53,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:53,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090680056] [2021-05-21 17:52:53,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090680056] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:53,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:53,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:53,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62538125] [2021-05-21 17:52:53,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:53,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:53,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:53,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:53,512 INFO L87 Difference]: Start difference. First operand 4580 states and 12250 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) [2021-05-21 17:52:54,683 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:54,846 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:52:55,044 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:52:55,245 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:52:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:56,186 INFO L93 Difference]: Finished difference Result 7855 states and 19934 transitions. [2021-05-21 17:52:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:52:56,186 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 [2021-05-21 17:52:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:56,190 INFO L225 Difference]: With dead ends: 7855 [2021-05-21 17:52:56,190 INFO L226 Difference]: Without dead ends: 7855 [2021-05-21 17:52:56,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2380.5ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:52:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2021-05-21 17:52:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 4582. [2021-05-21 17:52:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4580 states have (on average 2.675764192139738) internal successors, (12255), 4581 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 12255 transitions. [2021-05-21 17:52:56,241 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 12255 transitions. Word has length 94 [2021-05-21 17:52:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:56,241 INFO L482 AbstractCegarLoop]: Abstraction has 4582 states and 12255 transitions. [2021-05-21 17:52:56,241 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) [2021-05-21 17:52:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 12255 transitions. [2021-05-21 17:52:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:56,244 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:56,244 INFO L521 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] [2021-05-21 17:52:56,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-21 17:52:56,244 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]=== [2021-05-21 17:52:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash -488385269, now seen corresponding path program 176 times [2021-05-21 17:52:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:56,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941909801] [2021-05-21 17:52:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:52:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:52:56,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:52:56,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941909801] [2021-05-21 17:52:56,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941909801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:52:56,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:52:56,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:52:56,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796488252] [2021-05-21 17:52:56,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:52:56,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:52:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:52:56,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:52:56,682 INFO L87 Difference]: Start difference. First operand 4582 states and 12255 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) [2021-05-21 17:52:57,855 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:52:58,025 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:52:58,210 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:52:58,375 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:52:58,572 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:52:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:52:59,515 INFO L93 Difference]: Finished difference Result 7653 states and 19530 transitions. [2021-05-21 17:52:59,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:52:59,516 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 [2021-05-21 17:52:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:52:59,521 INFO L225 Difference]: With dead ends: 7653 [2021-05-21 17:52:59,521 INFO L226 Difference]: Without dead ends: 7653 [2021-05-21 17:52:59,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2536.3ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:52:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2021-05-21 17:52:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 4576. [2021-05-21 17:52:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.675994752951465) internal successors, (12240), 4575 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:52:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12240 transitions. [2021-05-21 17:52:59,575 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12240 transitions. Word has length 94 [2021-05-21 17:52:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:52:59,575 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12240 transitions. [2021-05-21 17:52:59,576 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) [2021-05-21 17:52:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12240 transitions. [2021-05-21 17:52:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:52:59,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:52:59,579 INFO L521 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] [2021-05-21 17:52:59,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-21 17:52:59,579 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]=== [2021-05-21 17:52:59,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:52:59,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1406513579, now seen corresponding path program 177 times [2021-05-21 17:52:59,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:52:59,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027334486] [2021-05-21 17:52:59,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:52:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:00,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:00,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027334486] [2021-05-21 17:53:00,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027334486] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:00,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:00,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:00,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833876676] [2021-05-21 17:53:00,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:00,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:00,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:00,020 INFO L87 Difference]: Start difference. First operand 4576 states and 12240 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) [2021-05-21 17:53:00,903 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:53:01,226 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:53:01,391 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:53:01,575 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:53:01,765 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:53:02,028 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-05-21 17:53:02,167 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-05-21 17:53:02,312 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-05-21 17:53:02,463 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-05-21 17:53:02,595 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:53:02,740 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-05-21 17:53:02,888 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-05-21 17:53:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:02,894 INFO L93 Difference]: Finished difference Result 9950 states and 25543 transitions. [2021-05-21 17:53:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:53:02,894 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 [2021-05-21 17:53:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:02,900 INFO L225 Difference]: With dead ends: 9950 [2021-05-21 17:53:02,900 INFO L226 Difference]: Without dead ends: 9950 [2021-05-21 17:53:02,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2605.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:53:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2021-05-21 17:53:02,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 4720. [2021-05-21 17:53:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4718 states have (on average 2.685883849088597) internal successors, (12672), 4719 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 12672 transitions. [2021-05-21 17:53:02,960 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 12672 transitions. Word has length 94 [2021-05-21 17:53:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:02,960 INFO L482 AbstractCegarLoop]: Abstraction has 4720 states and 12672 transitions. [2021-05-21 17:53:02,960 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) [2021-05-21 17:53:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 12672 transitions. [2021-05-21 17:53:02,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:02,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:02,964 INFO L521 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] [2021-05-21 17:53:02,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-21 17:53:02,964 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]=== [2021-05-21 17:53:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:02,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1541333385, now seen corresponding path program 178 times [2021-05-21 17:53:02,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:02,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701249363] [2021-05-21 17:53:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:03,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:03,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701249363] [2021-05-21 17:53:03,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701249363] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:03,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:03,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:03,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973792442] [2021-05-21 17:53:03,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:03,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:03,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:03,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:03,394 INFO L87 Difference]: Start difference. First operand 4720 states and 12672 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) [2021-05-21 17:53:04,337 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:53:04,550 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:53:04,907 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:53:05,091 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:53:05,279 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:53:05,574 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:53:05,735 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:53:05,901 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:53:06,075 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:53:06,228 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:53:06,413 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:53:06,580 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:53:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:06,586 INFO L93 Difference]: Finished difference Result 11002 states and 28116 transitions. [2021-05-21 17:53:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:53:06,586 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 [2021-05-21 17:53:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:06,593 INFO L225 Difference]: With dead ends: 11002 [2021-05-21 17:53:06,593 INFO L226 Difference]: Without dead ends: 11002 [2021-05-21 17:53:06,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2782.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:53:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2021-05-21 17:53:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 4756. [2021-05-21 17:53:06,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4756 states, 4754 states have (on average 2.6882625157761884) internal successors, (12780), 4755 states have internal predecessors, (12780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4756 states to 4756 states and 12780 transitions. [2021-05-21 17:53:06,654 INFO L78 Accepts]: Start accepts. Automaton has 4756 states and 12780 transitions. Word has length 94 [2021-05-21 17:53:06,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:06,654 INFO L482 AbstractCegarLoop]: Abstraction has 4756 states and 12780 transitions. [2021-05-21 17:53:06,654 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) [2021-05-21 17:53:06,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4756 states and 12780 transitions. [2021-05-21 17:53:06,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:06,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:06,658 INFO L521 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] [2021-05-21 17:53:06,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-21 17:53:06,658 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]=== [2021-05-21 17:53:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:06,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1831438763, now seen corresponding path program 179 times [2021-05-21 17:53:06,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:06,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337774735] [2021-05-21 17:53:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:07,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:07,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337774735] [2021-05-21 17:53:07,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337774735] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:07,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:07,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:07,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060968136] [2021-05-21 17:53:07,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:07,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:07,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:07,099 INFO L87 Difference]: Start difference. First operand 4756 states and 12780 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) [2021-05-21 17:53:08,014 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:53:08,216 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:53:08,410 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-05-21 17:53:08,622 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-05-21 17:53:08,957 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:53:09,144 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:53:09,440 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-05-21 17:53:09,628 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-05-21 17:53:09,823 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-05-21 17:53:10,012 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-05-21 17:53:10,201 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:53:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:10,207 INFO L93 Difference]: Finished difference Result 10690 states and 27532 transitions. [2021-05-21 17:53:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-21 17:53:10,208 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 [2021-05-21 17:53:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:10,217 INFO L225 Difference]: With dead ends: 10690 [2021-05-21 17:53:10,217 INFO L226 Difference]: Without dead ends: 10690 [2021-05-21 17:53:10,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2792.6ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 17:53:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10690 states. [2021-05-21 17:53:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10690 to 4648. [2021-05-21 17:53:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 2.6810159276797245) internal successors, (12456), 4647 states have internal predecessors, (12456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 12456 transitions. [2021-05-21 17:53:10,291 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 12456 transitions. Word has length 94 [2021-05-21 17:53:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:10,291 INFO L482 AbstractCegarLoop]: Abstraction has 4648 states and 12456 transitions. [2021-05-21 17:53:10,291 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) [2021-05-21 17:53:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 12456 transitions. [2021-05-21 17:53:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:10,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:10,295 INFO L521 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] [2021-05-21 17:53:10,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-21 17:53:10,295 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]=== [2021-05-21 17:53:10,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash -782817535, now seen corresponding path program 180 times [2021-05-21 17:53:10,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:10,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553494533] [2021-05-21 17:53:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:10,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:10,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553494533] [2021-05-21 17:53:10,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553494533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:10,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:10,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:10,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744328537] [2021-05-21 17:53:10,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:10,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:10,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:10,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:10,750 INFO L87 Difference]: Start difference. First operand 4648 states and 12456 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) [2021-05-21 17:53:11,995 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-05-21 17:53:12,177 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:53:12,374 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:53:12,576 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:53:13,006 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:53:13,140 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:53:13,280 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:53:13,533 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:53:13,673 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:53:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:13,682 INFO L93 Difference]: Finished difference Result 10468 states and 26731 transitions. [2021-05-21 17:53:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:53:13,682 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 [2021-05-21 17:53:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:13,688 INFO L225 Difference]: With dead ends: 10468 [2021-05-21 17:53:13,688 INFO L226 Difference]: Without dead ends: 10468 [2021-05-21 17:53:13,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2552.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:53:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-05-21 17:53:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 4652. [2021-05-21 17:53:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 4650 states have (on average 2.6808602150537633) internal successors, (12466), 4651 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:13,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 12466 transitions. [2021-05-21 17:53:13,748 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 12466 transitions. Word has length 94 [2021-05-21 17:53:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:13,748 INFO L482 AbstractCegarLoop]: Abstraction has 4652 states and 12466 transitions. [2021-05-21 17:53:13,748 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) [2021-05-21 17:53:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 12466 transitions. [2021-05-21 17:53:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:13,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:13,752 INFO L521 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] [2021-05-21 17:53:13,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-21 17:53:13,752 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]=== [2021-05-21 17:53:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:13,752 INFO L82 PathProgramCache]: Analyzing trace with hash -842486119, now seen corresponding path program 181 times [2021-05-21 17:53:13,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:13,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501790503] [2021-05-21 17:53:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:14,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:14,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501790503] [2021-05-21 17:53:14,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501790503] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:14,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:14,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:14,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953841537] [2021-05-21 17:53:14,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:14,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:14,177 INFO L87 Difference]: Start difference. First operand 4652 states and 12466 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) [2021-05-21 17:53:14,961 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-05-21 17:53:15,463 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:53:15,623 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-05-21 17:53:15,825 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-05-21 17:53:16,025 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-05-21 17:53:16,450 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:53:16,585 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:53:16,728 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:53:16,982 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:53:17,122 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:53:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:17,131 INFO L93 Difference]: Finished difference Result 10630 states and 27046 transitions. [2021-05-21 17:53:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:53:17,131 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 [2021-05-21 17:53:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:17,140 INFO L225 Difference]: With dead ends: 10630 [2021-05-21 17:53:17,140 INFO L226 Difference]: Without dead ends: 10630 [2021-05-21 17:53:17,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2542.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:53:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2021-05-21 17:53:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 4654. [2021-05-21 17:53:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4652 states have (on average 2.6807824591573515) internal successors, (12471), 4653 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 12471 transitions. [2021-05-21 17:53:17,228 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 12471 transitions. Word has length 94 [2021-05-21 17:53:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:17,228 INFO L482 AbstractCegarLoop]: Abstraction has 4654 states and 12471 transitions. [2021-05-21 17:53:17,228 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) [2021-05-21 17:53:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 12471 transitions. [2021-05-21 17:53:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:17,231 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:17,231 INFO L521 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] [2021-05-21 17:53:17,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-21 17:53:17,231 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]=== [2021-05-21 17:53:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:17,232 INFO L82 PathProgramCache]: Analyzing trace with hash 838527627, now seen corresponding path program 182 times [2021-05-21 17:53:17,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:17,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059958010] [2021-05-21 17:53:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:17,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:17,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059958010] [2021-05-21 17:53:17,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059958010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:17,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:17,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:17,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235671561] [2021-05-21 17:53:17,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:17,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:17,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:17,669 INFO L87 Difference]: Start difference. First operand 4654 states and 12471 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) [2021-05-21 17:53:18,864 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-05-21 17:53:19,029 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-05-21 17:53:19,216 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-05-21 17:53:19,383 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-05-21 17:53:19,593 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-05-21 17:53:20,006 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-05-21 17:53:20,139 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-21 17:53:20,280 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-05-21 17:53:20,531 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-05-21 17:53:20,665 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-05-21 17:53:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:20,671 INFO L93 Difference]: Finished difference Result 10428 states and 26642 transitions. [2021-05-21 17:53:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 17:53:20,672 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 [2021-05-21 17:53:20,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:20,678 INFO L225 Difference]: With dead ends: 10428 [2021-05-21 17:53:20,678 INFO L226 Difference]: Without dead ends: 10428 [2021-05-21 17:53:20,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2699.1ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 17:53:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10428 states. [2021-05-21 17:53:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10428 to 4648. [2021-05-21 17:53:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 2.6810159276797245) internal successors, (12456), 4647 states have internal predecessors, (12456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:20,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 12456 transitions. [2021-05-21 17:53:20,740 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 12456 transitions. Word has length 94 [2021-05-21 17:53:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:20,740 INFO L482 AbstractCegarLoop]: Abstraction has 4648 states and 12456 transitions. [2021-05-21 17:53:20,740 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) [2021-05-21 17:53:20,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 12456 transitions. [2021-05-21 17:53:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:20,743 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:20,743 INFO L521 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] [2021-05-21 17:53:20,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-21 17:53:20,744 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]=== [2021-05-21 17:53:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:20,744 INFO L82 PathProgramCache]: Analyzing trace with hash 634894617, now seen corresponding path program 183 times [2021-05-21 17:53:20,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:20,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367298076] [2021-05-21 17:53:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:53:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:53:21,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:53:21,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367298076] [2021-05-21 17:53:21,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367298076] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:53:21,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:53:21,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-21 17:53:21,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017624815] [2021-05-21 17:53:21,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-21 17:53:21,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:53:21,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-21 17:53:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-05-21 17:53:21,169 INFO L87 Difference]: Start difference. First operand 4648 states and 12456 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) [2021-05-21 17:53:22,124 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-05-21 17:53:22,293 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-05-21 17:53:22,642 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:53:22,824 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-05-21 17:53:23,013 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-05-21 17:53:23,308 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-05-21 17:53:23,470 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-05-21 17:53:23,637 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-05-21 17:53:23,814 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-05-21 17:53:23,985 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-05-21 17:53:24,151 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-05-21 17:53:24,318 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-05-21 17:53:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:53:24,325 INFO L93 Difference]: Finished difference Result 11948 states and 30434 transitions. [2021-05-21 17:53:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 17:53:24,325 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 [2021-05-21 17:53:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:53:24,332 INFO L225 Difference]: With dead ends: 11948 [2021-05-21 17:53:24,332 INFO L226 Difference]: Without dead ends: 11948 [2021-05-21 17:53:24,332 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2805.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 17:53:24,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11948 states. [2021-05-21 17:53:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11948 to 4696. [2021-05-21 17:53:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4696 states, 4694 states have (on average 2.684277801448658) internal successors, (12600), 4695 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:53:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4696 states to 4696 states and 12600 transitions. [2021-05-21 17:53:24,397 INFO L78 Accepts]: Start accepts. Automaton has 4696 states and 12600 transitions. Word has length 94 [2021-05-21 17:53:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:53:24,398 INFO L482 AbstractCegarLoop]: Abstraction has 4696 states and 12600 transitions. [2021-05-21 17:53:24,398 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) [2021-05-21 17:53:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4696 states and 12600 transitions. [2021-05-21 17:53:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-21 17:53:24,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:53:24,401 INFO L521 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] [2021-05-21 17:53:24,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-21 17:53:24,401 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]=== [2021-05-21 17:53:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:53:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 344789239, now seen corresponding path program 184 times [2021-05-21 17:53:24,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:53:24,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313155862] [2021-05-21 17:53:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:53:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-05-21 17:53:24,493 WARN L222 SmtUtils]: Removed 3 from assertion stack [2021-05-21 17:53:24,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-21 17:53:24,493 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-21 17:53:24,495 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:53:24,496 WARN L196 ceAbstractionStarter]: Timeout [2021-05-21 17:53:24,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:53:24 BasicIcfg [2021-05-21 17:53:24,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:53:24,496 INFO L168 Benchmark]: Toolchain (without parser) took 735989.07 ms. Allocated memory was 369.1 MB in the beginning and 1.2 GB in the end (delta: 801.1 MB). Free memory was 330.4 MB in the beginning and 795.8 MB in the end (delta: -465.4 MB). Peak memory consumption was 338.0 MB. Max. memory is 16.0 GB. [2021-05-21 17:53:24,496 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 369.1 MB. Free memory is still 350.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:53:24,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.57 ms. Allocated memory is still 369.1 MB. Free memory was 330.2 MB in the beginning and 332.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 89.4 MB. Max. memory is 16.0 GB. [2021-05-21 17:53:24,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.77 ms. Allocated memory is still 369.1 MB. Free memory was 332.3 MB in the beginning and 328.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:53:24,497 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 369.1 MB. Free memory was 328.2 MB in the beginning and 326.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:53:24,497 INFO L168 Benchmark]: RCFGBuilder took 550.97 ms. Allocated memory is still 369.1 MB. Free memory was 326.1 MB in the beginning and 278.9 MB in the end (delta: 47.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:53:24,497 INFO L168 Benchmark]: TraceAbstraction took 734656.07 ms. Allocated memory was 369.1 MB in the beginning and 1.2 GB in the end (delta: 801.1 MB). Free memory was 278.9 MB in the beginning and 795.8 MB in the end (delta: -516.9 MB). Peak memory consumption was 285.3 MB. Max. memory is 16.0 GB. [2021-05-21 17:53:24,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 369.1 MB. Free memory is still 350.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 708.57 ms. Allocated memory is still 369.1 MB. Free memory was 330.2 MB in the beginning and 332.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 89.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.77 ms. Allocated memory is still 369.1 MB. Free memory was 332.3 MB in the beginning and 328.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 369.1 MB. Free memory was 328.2 MB in the beginning and 326.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 550.97 ms. Allocated memory is still 369.1 MB. Free memory was 326.1 MB in the beginning and 278.9 MB in the end (delta: 47.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 734656.07 ms. Allocated memory was 369.1 MB in the beginning and 1.2 GB in the end (delta: 801.1 MB). Free memory was 278.9 MB in the beginning and 795.8 MB in the end (delta: -516.9 MB). Peak memory consumption was 285.3 MB. Max. memory is 16.0 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 analyzing trace of length 95 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 15 for 4ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 95 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 15 for 4ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 95 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 15 for 4ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 95 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 15 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 148 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 734554.6ms, OverallIterations: 193, TraceHistogramMax: 1, EmptinessCheckTime: 626.5ms, AutomataDifference: 634184.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 123.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56201 SDtfs, 193041 SDslu, 565913 SDs, 0 SdLazy, 256034 SolverSat, 12642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109603.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9655 GetRequests, 579 SyntacticMatches, 202 SemanticMatches, 8874 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51854 ImplicationChecksByTransitivity, 562623.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5115occurred in iteration=0, InterpolantAutomatonStates: 5530, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10793.1ms AutomataMinimizationTime, 192 MinimizatonAttempts, 764347 StatesRemovedByMinimization, 191 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 277.7ms SsaConstructionTime, 1744.7ms SatisfiabilityAnalysisTime, 85429.5ms InterpolantComputationTime, 17934 NumberOfCodeBlocks, 17934 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 17742 ConstructedInterpolants, 0 QuantifiedInterpolants, 279683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 192 InterpolantComputations, 192 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