/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:52:53,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:52:53,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:52:53,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:52:53,283 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 [2021-08-06 13:52:53,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:52:53,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:52:53,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:52:53,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:52:53,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:52:53,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:52:53,317 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:52:53,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:52:53,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:52:53,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:52:53,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:52:53,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:52:53,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:52:53,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:52:53,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:52:53,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:52:53,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:52:53,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:52:53,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:52:53,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:52:53,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:52:53,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:52:53,320 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:52:53,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:52:53,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:52:53,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:52:53,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:52:53,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:52:53,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:52:53,623 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:52:53,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2021-08-06 13:52:53,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dae5e683/7e1ddb26243b4f709e2b7f870c2a3315/FLAG5890a3b0f [2021-08-06 13:52:54,198 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:52:54,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2021-08-06 13:52:54,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dae5e683/7e1ddb26243b4f709e2b7f870c2a3315/FLAG5890a3b0f [2021-08-06 13:52:54,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dae5e683/7e1ddb26243b4f709e2b7f870c2a3315 [2021-08-06 13:52:54,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:52:54,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:52:54,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:52:54,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:52:54,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:52:54,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:52:54" (1/1) ... [2021-08-06 13:52:54,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3deae8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:54, skipping insertion in model container [2021-08-06 13:52:54,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:52:54" (1/1) ... [2021-08-06 13:52:54,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:52:54,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:52:54,852 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-06 13:52:55,286 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-3_2-container_of-global.i[75009,75022] [2021-08-06 13:52:55,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:52:55,315 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:52:55,323 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-06 13:52:55,343 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-3_2-container_of-global.i[75009,75022] [2021-08-06 13:52:55,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:52:55,423 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:52:55,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55 WrapperNode [2021-08-06 13:52:55,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:52:55,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:52:55,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:52:55,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:52:55,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:52:55,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:52:55,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:52:55,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:52:55,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:52:55,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:52:55,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:52:55,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:52:55,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (1/1) ... [2021-08-06 13:52:55,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:52:55,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:52:55,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 13:52:55,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 13:52:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-06 13:52:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:52:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-06 13:52:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 13:52:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-06 13:52:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:52:55,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:52:55,565 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-08-06 13:52:55,566 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-08-06 13:52:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:52:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:52:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:52:55,568 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 13:52:56,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:52:56,077 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-06 13:52:56,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:52:56 BoogieIcfgContainer [2021-08-06 13:52:56,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:52:56,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:52:56,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:52:56,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:52:56,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:52:54" (1/3) ... [2021-08-06 13:52:56,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4729581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:52:56, skipping insertion in model container [2021-08-06 13:52:56,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:55" (2/3) ... [2021-08-06 13:52:56,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4729581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:52:56, skipping insertion in model container [2021-08-06 13:52:56,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:52:56" (3/3) ... [2021-08-06 13:52:56,083 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2021-08-06 13:52:56,086 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:52:56,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:52:56,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-06 13:52:56,087 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:52:56,118 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,118 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,118 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,119 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,119 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,119 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,119 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,119 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,120 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,121 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,122 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,122 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,122 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,122 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,122 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,122 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,123 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,124 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,124 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,124 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,124 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,125 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,126 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,127 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,128 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,129 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,130 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,130 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,130 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,130 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,134 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,134 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,134 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,135 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,137 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,137 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,137 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,137 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,137 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,137 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,140 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,140 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,140 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,140 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,141 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,141 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,141 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,141 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,141 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,141 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:56,149 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 13:52:56,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 13:52:56,191 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 13:52:56,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-06 13:52:56,207 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 158 places, 162 transitions, 346 flow [2021-08-06 13:52:56,301 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4270 states, 4260 states have (on average 2.7514084507042256) internal successors, (11721), 4269 states have internal predecessors, (11721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 4270 states, 4260 states have (on average 2.7514084507042256) internal successors, (11721), 4269 states have internal predecessors, (11721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-06 13:52:56,317 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:56,317 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:56,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:52:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:56,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1634489351, now seen corresponding path program 1 times [2021-08-06 13:52:56,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:56,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561988340] [2021-08-06 13:52:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:56,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:56,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:56,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561988340] [2021-08-06 13:52:56,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561988340] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:56,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:56,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:56,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740141805] [2021-08-06 13:52:56,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:56,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:56,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:56,725 INFO L87 Difference]: Start difference. First operand has 4270 states, 4260 states have (on average 2.7514084507042256) internal successors, (11721), 4269 states have internal predecessors, (11721), 0 states have call successors, (0), 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 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:56,986 INFO L93 Difference]: Finished difference Result 4064 states and 10950 transitions. [2021-08-06 13:52:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:52:56,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-06 13:52:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:57,011 INFO L225 Difference]: With dead ends: 4064 [2021-08-06 13:52:57,011 INFO L226 Difference]: Without dead ends: 3358 [2021-08-06 13:52:57,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:52:57,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2021-08-06 13:52:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 3357. [2021-08-06 13:52:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3350 states have (on average 2.681492537313433) internal successors, (8983), 3356 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 8983 transitions. [2021-08-06 13:52:57,161 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 8983 transitions. Word has length 36 [2021-08-06 13:52:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:57,163 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 8983 transitions. [2021-08-06 13:52:57,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 8983 transitions. [2021-08-06 13:52:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-06 13:52:57,173 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:57,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:57,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:52:57,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:52:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:57,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2071666643, now seen corresponding path program 1 times [2021-08-06 13:52:57,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:57,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907980137] [2021-08-06 13:52:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:57,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:57,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:57,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907980137] [2021-08-06 13:52:57,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907980137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:57,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:57,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:57,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971528920] [2021-08-06 13:52:57,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:57,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:57,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:57,306 INFO L87 Difference]: Start difference. First operand 3357 states and 8983 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:57,448 INFO L93 Difference]: Finished difference Result 3359 states and 8985 transitions. [2021-08-06 13:52:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:52:57,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-06 13:52:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:57,464 INFO L225 Difference]: With dead ends: 3359 [2021-08-06 13:52:57,464 INFO L226 Difference]: Without dead ends: 3359 [2021-08-06 13:52:57,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 55.4ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:52:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2021-08-06 13:52:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3355. [2021-08-06 13:52:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3349 states have (on average 2.6816960286652733) internal successors, (8981), 3354 states have internal predecessors, (8981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 8981 transitions. [2021-08-06 13:52:57,581 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 8981 transitions. Word has length 42 [2021-08-06 13:52:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:57,582 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 8981 transitions. [2021-08-06 13:52:57,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 8981 transitions. [2021-08-06 13:52:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-06 13:52:57,585 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:57,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:57,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:52:57,585 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:52:57,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:57,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1744810852, now seen corresponding path program 1 times [2021-08-06 13:52:57,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:57,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314520340] [2021-08-06 13:52:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:57,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:57,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:57,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314520340] [2021-08-06 13:52:57,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314520340] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:57,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:57,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:57,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935003659] [2021-08-06 13:52:57,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:57,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:57,721 INFO L87 Difference]: Start difference. First operand 3355 states and 8981 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:57,979 INFO L93 Difference]: Finished difference Result 4878 states and 13059 transitions. [2021-08-06 13:52:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:52:57,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-06 13:52:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:58,002 INFO L225 Difference]: With dead ends: 4878 [2021-08-06 13:52:58,003 INFO L226 Difference]: Without dead ends: 4878 [2021-08-06 13:52:58,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 73.3ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:52:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4878 states. [2021-08-06 13:52:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4878 to 3753. [2021-08-06 13:52:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3748 states have (on average 2.683831376734258) internal successors, (10059), 3752 states have internal predecessors, (10059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 10059 transitions. [2021-08-06 13:52:58,150 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 10059 transitions. Word has length 60 [2021-08-06 13:52:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:58,150 INFO L470 AbstractCegarLoop]: Abstraction has 3753 states and 10059 transitions. [2021-08-06 13:52:58,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:58,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 10059 transitions. [2021-08-06 13:52:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-06 13:52:58,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:58,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:58,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 13:52:58,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:52:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -478651348, now seen corresponding path program 1 times [2021-08-06 13:52:58,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:58,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759306132] [2021-08-06 13:52:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:58,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:58,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:58,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759306132] [2021-08-06 13:52:58,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759306132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:58,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:58,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:58,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25200062] [2021-08-06 13:52:58,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:58,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:58,275 INFO L87 Difference]: Start difference. First operand 3753 states and 10059 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2021-08-06 13:52:58,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:58,480 INFO L93 Difference]: Finished difference Result 5276 states and 14062 transitions. [2021-08-06 13:52:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:52:58,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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 [2021-08-06 13:52:58,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:58,498 INFO L225 Difference]: With dead ends: 5276 [2021-08-06 13:52:58,498 INFO L226 Difference]: Without dead ends: 4475 [2021-08-06 13:52:58,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:52:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2021-08-06 13:52:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4325. [2021-08-06 13:52:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4325 states, 4321 states have (on average 2.6931265910668825) internal successors, (11637), 4324 states have internal predecessors, (11637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 11637 transitions. [2021-08-06 13:52:58,592 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 11637 transitions. Word has length 66 [2021-08-06 13:52:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:58,592 INFO L470 AbstractCegarLoop]: Abstraction has 4325 states and 11637 transitions. [2021-08-06 13:52:58,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 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) [2021-08-06 13:52:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 11637 transitions. [2021-08-06 13:52:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-06 13:52:58,602 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:58,602 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:58,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 13:52:58,603 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:52:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash 216866773, now seen corresponding path program 1 times [2021-08-06 13:52:58,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:58,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656017261] [2021-08-06 13:52:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:58,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:58,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:58,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656017261] [2021-08-06 13:52:58,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656017261] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:58,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:58,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 13:52:58,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527402061] [2021-08-06 13:52:58,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 13:52:58,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 13:52:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-06 13:52:58,724 INFO L87 Difference]: Start difference. First operand 4325 states and 11637 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:58,757 INFO L93 Difference]: Finished difference Result 1631 states and 4196 transitions. [2021-08-06 13:52:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 13:52:58,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-08-06 13:52:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:58,778 INFO L225 Difference]: With dead ends: 1631 [2021-08-06 13:52:58,778 INFO L226 Difference]: Without dead ends: 1631 [2021-08-06 13:52:58,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:52:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-08-06 13:52:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-08-06 13:52:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 2.575813382443217) internal successors, (4196), 1630 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 4196 transitions. [2021-08-06 13:52:58,812 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 4196 transitions. Word has length 78 [2021-08-06 13:52:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:58,813 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 4196 transitions. [2021-08-06 13:52:58,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 4196 transitions. [2021-08-06 13:52:58,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:52:58,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:58,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:58,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 13:52:58,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:52:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash -506294273, now seen corresponding path program 1 times [2021-08-06 13:52:58,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:58,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763981358] [2021-08-06 13:52:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:58,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:59,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:59,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763981358] [2021-08-06 13:52:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763981358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:59,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:59,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:52:59,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465572264] [2021-08-06 13:52:59,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:52:59,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:59,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:52:59,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:52:59,350 INFO L87 Difference]: Start difference. First operand 1631 states and 4196 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:59,943 INFO L93 Difference]: Finished difference Result 2565 states and 6500 transitions. [2021-08-06 13:52:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:52:59,943 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:52:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:59,949 INFO L225 Difference]: With dead ends: 2565 [2021-08-06 13:52:59,949 INFO L226 Difference]: Without dead ends: 2565 [2021-08-06 13:52:59,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 499.7ms TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:52:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2021-08-06 13:52:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 1891. [2021-08-06 13:52:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 2.5309687665431446) internal successors, (4781), 1890 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 4781 transitions. [2021-08-06 13:52:59,996 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 4781 transitions. Word has length 105 [2021-08-06 13:52:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:59,996 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 4781 transitions. [2021-08-06 13:52:59,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 4781 transitions. [2021-08-06 13:53:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:00,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:00,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:00,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 13:53:00,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1942646093, now seen corresponding path program 2 times [2021-08-06 13:53:00,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:00,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654909150] [2021-08-06 13:53:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:00,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:00,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:00,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654909150] [2021-08-06 13:53:00,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654909150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:00,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:00,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:00,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335266866] [2021-08-06 13:53:00,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:00,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:00,425 INFO L87 Difference]: Start difference. First operand 1891 states and 4781 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:01,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:01,072 INFO L93 Difference]: Finished difference Result 2788 states and 6898 transitions. [2021-08-06 13:53:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:53:01,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:01,087 INFO L225 Difference]: With dead ends: 2788 [2021-08-06 13:53:01,087 INFO L226 Difference]: Without dead ends: 2788 [2021-08-06 13:53:01,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 455.6ms TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:53:01,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2021-08-06 13:53:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 1916. [2021-08-06 13:53:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1914 states have (on average 2.5282131661442007) internal successors, (4839), 1915 states have internal predecessors, (4839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 4839 transitions. [2021-08-06 13:53:01,127 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 4839 transitions. Word has length 105 [2021-08-06 13:53:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:01,127 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 4839 transitions. [2021-08-06 13:53:01,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 4839 transitions. [2021-08-06 13:53:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:01,131 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:01,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:01,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 13:53:01,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:01,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1530651393, now seen corresponding path program 3 times [2021-08-06 13:53:01,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:01,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916515457] [2021-08-06 13:53:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:01,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:01,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:01,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916515457] [2021-08-06 13:53:01,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916515457] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:01,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:01,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:01,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518940109] [2021-08-06 13:53:01,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:01,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:01,473 INFO L87 Difference]: Start difference. First operand 1916 states and 4839 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:02,043 INFO L93 Difference]: Finished difference Result 2429 states and 5851 transitions. [2021-08-06 13:53:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:53:02,044 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:02,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:02,048 INFO L225 Difference]: With dead ends: 2429 [2021-08-06 13:53:02,048 INFO L226 Difference]: Without dead ends: 2429 [2021-08-06 13:53:02,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 452.0ms TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:53:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-08-06 13:53:02,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 1941. [2021-08-06 13:53:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1939 states have (on average 2.5255286230015472) internal successors, (4897), 1940 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 4897 transitions. [2021-08-06 13:53:02,085 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 4897 transitions. Word has length 105 [2021-08-06 13:53:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:02,085 INFO L470 AbstractCegarLoop]: Abstraction has 1941 states and 4897 transitions. [2021-08-06 13:53:02,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 4897 transitions. [2021-08-06 13:53:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:02,090 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:02,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:02,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 13:53:02,091 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash 404524991, now seen corresponding path program 1 times [2021-08-06 13:53:02,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:02,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720998514] [2021-08-06 13:53:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:02,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:02,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:02,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720998514] [2021-08-06 13:53:02,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720998514] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:02,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:02,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:02,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085946917] [2021-08-06 13:53:02,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:02,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:02,693 INFO L87 Difference]: Start difference. First operand 1941 states and 4897 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:03,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:03,966 INFO L93 Difference]: Finished difference Result 2751 states and 6914 transitions. [2021-08-06 13:53:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:53:03,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:03,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:03,972 INFO L225 Difference]: With dead ends: 2751 [2021-08-06 13:53:03,972 INFO L226 Difference]: Without dead ends: 2717 [2021-08-06 13:53:03,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 820.5ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-08-06 13:53:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2021-08-06 13:53:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2647. [2021-08-06 13:53:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2647 states, 2645 states have (on average 2.5550094517958413) internal successors, (6758), 2646 states have internal predecessors, (6758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 6758 transitions. [2021-08-06 13:53:04,021 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 6758 transitions. Word has length 105 [2021-08-06 13:53:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:04,021 INFO L470 AbstractCegarLoop]: Abstraction has 2647 states and 6758 transitions. [2021-08-06 13:53:04,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 6758 transitions. [2021-08-06 13:53:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:04,026 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:04,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:04,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 13:53:04,027 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:04,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:04,027 INFO L82 PathProgramCache]: Analyzing trace with hash 370192485, now seen corresponding path program 2 times [2021-08-06 13:53:04,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:04,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322262345] [2021-08-06 13:53:04,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:04,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:04,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:04,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322262345] [2021-08-06 13:53:04,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322262345] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:04,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:04,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:04,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533890541] [2021-08-06 13:53:04,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:04,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:04,746 INFO L87 Difference]: Start difference. First operand 2647 states and 6758 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:06,789 INFO L93 Difference]: Finished difference Result 2897 states and 7229 transitions. [2021-08-06 13:53:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-06 13:53:06,789 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:06,794 INFO L225 Difference]: With dead ends: 2897 [2021-08-06 13:53:06,795 INFO L226 Difference]: Without dead ends: 2852 [2021-08-06 13:53:06,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1353.9ms TimeCoverageRelationStatistics Valid=551, Invalid=1801, Unknown=0, NotChecked=0, Total=2352 [2021-08-06 13:53:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-08-06 13:53:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2667. [2021-08-06 13:53:06,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2665 states have (on average 2.5568480300187617) internal successors, (6814), 2666 states have internal predecessors, (6814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 6814 transitions. [2021-08-06 13:53:06,838 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 6814 transitions. Word has length 105 [2021-08-06 13:53:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:06,838 INFO L470 AbstractCegarLoop]: Abstraction has 2667 states and 6814 transitions. [2021-08-06 13:53:06,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 6814 transitions. [2021-08-06 13:53:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:06,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:06,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:06,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 13:53:06,843 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:06,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1978287873, now seen corresponding path program 4 times [2021-08-06 13:53:06,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:06,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033078898] [2021-08-06 13:53:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:06,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:07,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:07,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033078898] [2021-08-06 13:53:07,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033078898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:07,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:07,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:07,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46740758] [2021-08-06 13:53:07,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:07,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:07,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:07,195 INFO L87 Difference]: Start difference. First operand 2667 states and 6814 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:07,772 INFO L93 Difference]: Finished difference Result 2845 states and 7141 transitions. [2021-08-06 13:53:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 13:53:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:07,778 INFO L225 Difference]: With dead ends: 2845 [2021-08-06 13:53:07,778 INFO L226 Difference]: Without dead ends: 2845 [2021-08-06 13:53:07,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 475.9ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:53:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2021-08-06 13:53:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2697. [2021-08-06 13:53:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2695 states have (on average 2.55139146567718) internal successors, (6876), 2696 states have internal predecessors, (6876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 6876 transitions. [2021-08-06 13:53:07,821 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 6876 transitions. Word has length 105 [2021-08-06 13:53:07,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:07,822 INFO L470 AbstractCegarLoop]: Abstraction has 2697 states and 6876 transitions. [2021-08-06 13:53:07,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 6876 transitions. [2021-08-06 13:53:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:07,827 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:07,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:07,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 13:53:07,827 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:07,827 INFO L82 PathProgramCache]: Analyzing trace with hash 937705041, now seen corresponding path program 5 times [2021-08-06 13:53:07,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:07,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577771719] [2021-08-06 13:53:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:07,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:08,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:08,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577771719] [2021-08-06 13:53:08,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577771719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:08,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:08,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:08,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784669177] [2021-08-06 13:53:08,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:08,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:08,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:08,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:08,329 INFO L87 Difference]: Start difference. First operand 2697 states and 6876 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:09,514 INFO L93 Difference]: Finished difference Result 3954 states and 9790 transitions. [2021-08-06 13:53:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:53:09,515 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:09,522 INFO L225 Difference]: With dead ends: 3954 [2021-08-06 13:53:09,522 INFO L226 Difference]: Without dead ends: 3954 [2021-08-06 13:53:09,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 937.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-08-06 13:53:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 2994. [2021-08-06 13:53:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 2.5718582887700534) internal successors, (7695), 2993 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 7695 transitions. [2021-08-06 13:53:09,571 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 7695 transitions. Word has length 105 [2021-08-06 13:53:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:09,571 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 7695 transitions. [2021-08-06 13:53:09,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 7695 transitions. [2021-08-06 13:53:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:09,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:09,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:09,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 13:53:09,577 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2125743583, now seen corresponding path program 6 times [2021-08-06 13:53:09,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:09,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832303592] [2021-08-06 13:53:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:09,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:10,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:10,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832303592] [2021-08-06 13:53:10,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832303592] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:10,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:10,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:10,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096975441] [2021-08-06 13:53:10,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:10,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:10,063 INFO L87 Difference]: Start difference. First operand 2994 states and 7695 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:11,303 INFO L93 Difference]: Finished difference Result 3835 states and 9481 transitions. [2021-08-06 13:53:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:53:11,304 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:11,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:11,309 INFO L225 Difference]: With dead ends: 3835 [2021-08-06 13:53:11,309 INFO L226 Difference]: Without dead ends: 3835 [2021-08-06 13:53:11,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 974.8ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:53:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-08-06 13:53:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3000. [2021-08-06 13:53:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2998 states have (on average 2.571714476317545) internal successors, (7710), 2999 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 7710 transitions. [2021-08-06 13:53:11,347 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 7710 transitions. Word has length 105 [2021-08-06 13:53:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:11,347 INFO L470 AbstractCegarLoop]: Abstraction has 3000 states and 7710 transitions. [2021-08-06 13:53:11,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 7710 transitions. [2021-08-06 13:53:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:11,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:11,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:11,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 13:53:11,352 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:11,353 INFO L82 PathProgramCache]: Analyzing trace with hash -779053777, now seen corresponding path program 7 times [2021-08-06 13:53:11,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:11,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744268039] [2021-08-06 13:53:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:11,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:11,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:11,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744268039] [2021-08-06 13:53:11,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744268039] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:11,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:11,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:11,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386303449] [2021-08-06 13:53:11,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:11,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:11,797 INFO L87 Difference]: Start difference. First operand 3000 states and 7710 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:12,986 INFO L93 Difference]: Finished difference Result 3762 states and 9308 transitions. [2021-08-06 13:53:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:12,987 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:12,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:12,992 INFO L225 Difference]: With dead ends: 3762 [2021-08-06 13:53:12,992 INFO L226 Difference]: Without dead ends: 3762 [2021-08-06 13:53:12,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 984.8ms TimeCoverageRelationStatistics Valid=295, Invalid=827, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:12,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2021-08-06 13:53:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3006. [2021-08-06 13:53:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3004 states have (on average 2.5715712383488682) internal successors, (7725), 3005 states have internal predecessors, (7725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 7725 transitions. [2021-08-06 13:53:13,039 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 7725 transitions. Word has length 105 [2021-08-06 13:53:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:13,040 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 7725 transitions. [2021-08-06 13:53:13,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 7725 transitions. [2021-08-06 13:53:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:13,045 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:13,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:13,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 13:53:13,045 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:13,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1156667855, now seen corresponding path program 8 times [2021-08-06 13:53:13,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:13,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829172015] [2021-08-06 13:53:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:13,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:13,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:13,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829172015] [2021-08-06 13:53:13,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829172015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:13,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:13,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:13,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459485700] [2021-08-06 13:53:13,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:13,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:13,517 INFO L87 Difference]: Start difference. First operand 3006 states and 7725 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:14,630 INFO L93 Difference]: Finished difference Result 3544 states and 8773 transitions. [2021-08-06 13:53:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:14,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:14,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:14,636 INFO L225 Difference]: With dead ends: 3544 [2021-08-06 13:53:14,636 INFO L226 Difference]: Without dead ends: 3544 [2021-08-06 13:53:14,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 913.1ms TimeCoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2021-08-06 13:53:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3066. [2021-08-06 13:53:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3064 states have (on average 2.569190600522193) internal successors, (7872), 3065 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 7872 transitions. [2021-08-06 13:53:14,682 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 7872 transitions. Word has length 105 [2021-08-06 13:53:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:14,683 INFO L470 AbstractCegarLoop]: Abstraction has 3066 states and 7872 transitions. [2021-08-06 13:53:14,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 7872 transitions. [2021-08-06 13:53:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:14,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:14,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:14,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 13:53:14,690 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:14,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2012526095, now seen corresponding path program 9 times [2021-08-06 13:53:14,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:14,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990882098] [2021-08-06 13:53:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:14,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:14,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:14,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990882098] [2021-08-06 13:53:14,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990882098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:14,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:14,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:14,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072631892] [2021-08-06 13:53:14,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:14,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:14,979 INFO L87 Difference]: Start difference. First operand 3066 states and 7872 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:15,611 INFO L93 Difference]: Finished difference Result 3996 states and 9906 transitions. [2021-08-06 13:53:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:15,620 INFO L225 Difference]: With dead ends: 3996 [2021-08-06 13:53:15,620 INFO L226 Difference]: Without dead ends: 3996 [2021-08-06 13:53:15,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 461.1ms TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:53:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2021-08-06 13:53:15,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3066. [2021-08-06 13:53:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3064 states have (on average 2.569190600522193) internal successors, (7872), 3065 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 7872 transitions. [2021-08-06 13:53:15,688 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 7872 transitions. Word has length 105 [2021-08-06 13:53:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:15,688 INFO L470 AbstractCegarLoop]: Abstraction has 3066 states and 7872 transitions. [2021-08-06 13:53:15,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 7872 transitions. [2021-08-06 13:53:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:15,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:15,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:15,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-06 13:53:15,693 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:15,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1135803117, now seen corresponding path program 10 times [2021-08-06 13:53:15,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:15,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815664146] [2021-08-06 13:53:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:15,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:16,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:16,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815664146] [2021-08-06 13:53:16,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815664146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:16,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:16,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:16,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3757594] [2021-08-06 13:53:16,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:16,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:16,220 INFO L87 Difference]: Start difference. First operand 3066 states and 7872 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:17,850 INFO L93 Difference]: Finished difference Result 5658 states and 14020 transitions. [2021-08-06 13:53:17,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-06 13:53:17,851 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:17,859 INFO L225 Difference]: With dead ends: 5658 [2021-08-06 13:53:17,859 INFO L226 Difference]: Without dead ends: 5658 [2021-08-06 13:53:17,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1344.7ms TimeCoverageRelationStatistics Valid=428, Invalid=1132, Unknown=0, NotChecked=0, Total=1560 [2021-08-06 13:53:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-08-06 13:53:17,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 3165. [2021-08-06 13:53:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3163 states have (on average 2.5750869427758456) internal successors, (8145), 3164 states have internal predecessors, (8145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 8145 transitions. [2021-08-06 13:53:17,921 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 8145 transitions. Word has length 105 [2021-08-06 13:53:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:17,921 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 8145 transitions. [2021-08-06 13:53:17,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 8145 transitions. [2021-08-06 13:53:17,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:17,927 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:17,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:17,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-06 13:53:17,927 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:17,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1901306837, now seen corresponding path program 11 times [2021-08-06 13:53:17,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:17,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788873712] [2021-08-06 13:53:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:17,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:18,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:18,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788873712] [2021-08-06 13:53:18,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788873712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:18,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:18,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:18,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483388994] [2021-08-06 13:53:18,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:18,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:18,526 INFO L87 Difference]: Start difference. First operand 3165 states and 8145 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:20,321 INFO L93 Difference]: Finished difference Result 6156 states and 15196 transitions. [2021-08-06 13:53:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:53:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:20,330 INFO L225 Difference]: With dead ends: 6156 [2021-08-06 13:53:20,330 INFO L226 Difference]: Without dead ends: 6156 [2021-08-06 13:53:20,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1430.2ms TimeCoverageRelationStatistics Valid=434, Invalid=1206, Unknown=0, NotChecked=0, Total=1640 [2021-08-06 13:53:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2021-08-06 13:53:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 3201. [2021-08-06 13:53:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 2.5798687089715537) internal successors, (8253), 3200 states have internal predecessors, (8253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 8253 transitions. [2021-08-06 13:53:20,391 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 8253 transitions. Word has length 105 [2021-08-06 13:53:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:20,391 INFO L470 AbstractCegarLoop]: Abstraction has 3201 states and 8253 transitions. [2021-08-06 13:53:20,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:20,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 8253 transitions. [2021-08-06 13:53:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:20,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:20,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:20,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-06 13:53:20,397 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:20,397 INFO L82 PathProgramCache]: Analyzing trace with hash -367050839, now seen corresponding path program 12 times [2021-08-06 13:53:20,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:20,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309919836] [2021-08-06 13:53:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:20,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:20,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:20,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309919836] [2021-08-06 13:53:20,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309919836] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:20,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:20,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:20,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005049563] [2021-08-06 13:53:20,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:20,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:20,856 INFO L87 Difference]: Start difference. First operand 3201 states and 8253 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:22,628 INFO L93 Difference]: Finished difference Result 5812 states and 14284 transitions. [2021-08-06 13:53:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:53:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:22,635 INFO L225 Difference]: With dead ends: 5812 [2021-08-06 13:53:22,635 INFO L226 Difference]: Without dead ends: 5812 [2021-08-06 13:53:22,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1482.1ms TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2021-08-06 13:53:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2021-08-06 13:53:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 3165. [2021-08-06 13:53:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3163 states have (on average 2.5750869427758456) internal successors, (8145), 3164 states have internal predecessors, (8145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 8145 transitions. [2021-08-06 13:53:22,689 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 8145 transitions. Word has length 105 [2021-08-06 13:53:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:22,689 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 8145 transitions. [2021-08-06 13:53:22,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 8145 transitions. [2021-08-06 13:53:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:22,694 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:22,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:22,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-06 13:53:22,695 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:22,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:22,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1698646867, now seen corresponding path program 13 times [2021-08-06 13:53:22,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:22,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054717586] [2021-08-06 13:53:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:22,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:23,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:23,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054717586] [2021-08-06 13:53:23,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054717586] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:23,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:23,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:23,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691779565] [2021-08-06 13:53:23,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:23,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:23,172 INFO L87 Difference]: Start difference. First operand 3165 states and 8145 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:24,458 INFO L93 Difference]: Finished difference Result 5228 states and 12802 transitions. [2021-08-06 13:53:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:24,466 INFO L225 Difference]: With dead ends: 5228 [2021-08-06 13:53:24,466 INFO L226 Difference]: Without dead ends: 5228 [2021-08-06 13:53:24,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1003.9ms TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2021-08-06 13:53:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 3167. [2021-08-06 13:53:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 3165 states have (on average 2.575039494470774) internal successors, (8150), 3166 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 8150 transitions. [2021-08-06 13:53:24,537 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 8150 transitions. Word has length 105 [2021-08-06 13:53:24,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:24,537 INFO L470 AbstractCegarLoop]: Abstraction has 3167 states and 8150 transitions. [2021-08-06 13:53:24,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:24,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 8150 transitions. [2021-08-06 13:53:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:24,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:24,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-06 13:53:24,543 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash 361488277, now seen corresponding path program 14 times [2021-08-06 13:53:24,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:24,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845422821] [2021-08-06 13:53:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:24,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:25,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:25,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845422821] [2021-08-06 13:53:25,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845422821] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:25,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:25,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:25,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307184888] [2021-08-06 13:53:25,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:25,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:25,080 INFO L87 Difference]: Start difference. First operand 3167 states and 8150 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:26,492 INFO L93 Difference]: Finished difference Result 5229 states and 12805 transitions. [2021-08-06 13:53:26,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:26,492 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:26,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:26,500 INFO L225 Difference]: With dead ends: 5229 [2021-08-06 13:53:26,500 INFO L226 Difference]: Without dead ends: 5229 [2021-08-06 13:53:26,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1085.9ms TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:53:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5229 states. [2021-08-06 13:53:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5229 to 3167. [2021-08-06 13:53:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 3165 states have (on average 2.575039494470774) internal successors, (8150), 3166 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 8150 transitions. [2021-08-06 13:53:26,552 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 8150 transitions. Word has length 105 [2021-08-06 13:53:26,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:26,552 INFO L470 AbstractCegarLoop]: Abstraction has 3167 states and 8150 transitions. [2021-08-06 13:53:26,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 8150 transitions. [2021-08-06 13:53:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:26,558 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:26,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:26,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-06 13:53:26,558 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1917771079, now seen corresponding path program 15 times [2021-08-06 13:53:26,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:26,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668819250] [2021-08-06 13:53:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:26,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:27,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:27,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668819250] [2021-08-06 13:53:27,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668819250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:27,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:27,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:27,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126168945] [2021-08-06 13:53:27,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:27,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:27,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:27,135 INFO L87 Difference]: Start difference. First operand 3167 states and 8150 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:28,775 INFO L93 Difference]: Finished difference Result 6461 states and 15801 transitions. [2021-08-06 13:53:28,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:28,775 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:28,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:28,783 INFO L225 Difference]: With dead ends: 6461 [2021-08-06 13:53:28,783 INFO L226 Difference]: Without dead ends: 6461 [2021-08-06 13:53:28,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1251.0ms TimeCoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:53:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2021-08-06 13:53:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 3219. [2021-08-06 13:53:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3217 states have (on average 2.581286913273236) internal successors, (8304), 3218 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 8304 transitions. [2021-08-06 13:53:28,837 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 8304 transitions. Word has length 105 [2021-08-06 13:53:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:28,837 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 8304 transitions. [2021-08-06 13:53:28,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 8304 transitions. [2021-08-06 13:53:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:28,842 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:28,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:28,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-06 13:53:28,843 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1742025857, now seen corresponding path program 16 times [2021-08-06 13:53:28,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:28,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80580634] [2021-08-06 13:53:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:28,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:29,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:29,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80580634] [2021-08-06 13:53:29,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80580634] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:29,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:29,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:29,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723443206] [2021-08-06 13:53:29,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:29,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:29,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:29,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:29,268 INFO L87 Difference]: Start difference. First operand 3219 states and 8304 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:30,983 INFO L93 Difference]: Finished difference Result 6476 states and 15781 transitions. [2021-08-06 13:53:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:53:30,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:30,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:30,992 INFO L225 Difference]: With dead ends: 6476 [2021-08-06 13:53:30,993 INFO L226 Difference]: Without dead ends: 6476 [2021-08-06 13:53:30,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1458.9ms TimeCoverageRelationStatistics Valid=449, Invalid=1033, Unknown=0, NotChecked=0, Total=1482 [2021-08-06 13:53:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2021-08-06 13:53:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 3219. [2021-08-06 13:53:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3217 states have (on average 2.581286913273236) internal successors, (8304), 3218 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 8304 transitions. [2021-08-06 13:53:31,051 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 8304 transitions. Word has length 105 [2021-08-06 13:53:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 3219 states and 8304 transitions. [2021-08-06 13:53:31,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 8304 transitions. [2021-08-06 13:53:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:31,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:31,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:31,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-06 13:53:31,057 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:31,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:31,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1935881169, now seen corresponding path program 17 times [2021-08-06 13:53:31,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:31,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806629234] [2021-08-06 13:53:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:31,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:31,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:31,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806629234] [2021-08-06 13:53:31,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806629234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:31,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:31,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:31,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576698177] [2021-08-06 13:53:31,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:31,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:31,489 INFO L87 Difference]: Start difference. First operand 3219 states and 8304 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:33,313 INFO L93 Difference]: Finished difference Result 6210 states and 15134 transitions. [2021-08-06 13:53:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:53:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:33,323 INFO L225 Difference]: With dead ends: 6210 [2021-08-06 13:53:33,323 INFO L226 Difference]: Without dead ends: 6210 [2021-08-06 13:53:33,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1457.4ms TimeCoverageRelationStatistics Valid=434, Invalid=1126, Unknown=0, NotChecked=0, Total=1560 [2021-08-06 13:53:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6210 states. [2021-08-06 13:53:33,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6210 to 3179. [2021-08-06 13:53:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3177 states have (on average 2.576644633301857) internal successors, (8186), 3178 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 8186 transitions. [2021-08-06 13:53:33,396 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 8186 transitions. Word has length 105 [2021-08-06 13:53:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:33,397 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 8186 transitions. [2021-08-06 13:53:33,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 8186 transitions. [2021-08-06 13:53:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:33,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:33,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:33,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-06 13:53:33,402 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:33,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:33,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2035118151, now seen corresponding path program 18 times [2021-08-06 13:53:33,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:33,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548394648] [2021-08-06 13:53:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:33,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:33,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:33,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548394648] [2021-08-06 13:53:33,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548394648] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:33,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:33,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:33,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068285232] [2021-08-06 13:53:33,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:33,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:33,950 INFO L87 Difference]: Start difference. First operand 3179 states and 8186 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:35,462 INFO L93 Difference]: Finished difference Result 5233 states and 12808 transitions. [2021-08-06 13:53:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:35,469 INFO L225 Difference]: With dead ends: 5233 [2021-08-06 13:53:35,469 INFO L226 Difference]: Without dead ends: 5233 [2021-08-06 13:53:35,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1142.8ms TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:53:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2021-08-06 13:53:35,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 3187. [2021-08-06 13:53:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 3185 states have (on average 2.576452119309262) internal successors, (8206), 3186 states have internal predecessors, (8206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 8206 transitions. [2021-08-06 13:53:35,516 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 8206 transitions. Word has length 105 [2021-08-06 13:53:35,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:35,517 INFO L470 AbstractCegarLoop]: Abstraction has 3187 states and 8206 transitions. [2021-08-06 13:53:35,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 8206 transitions. [2021-08-06 13:53:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:35,521 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:35,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:35,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-06 13:53:35,522 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1454781857, now seen corresponding path program 19 times [2021-08-06 13:53:35,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:35,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422719333] [2021-08-06 13:53:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:35,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:35,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:35,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422719333] [2021-08-06 13:53:35,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422719333] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:35,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:35,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135015899] [2021-08-06 13:53:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:35,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:35,918 INFO L87 Difference]: Start difference. First operand 3187 states and 8206 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:37,257 INFO L93 Difference]: Finished difference Result 5529 states and 13476 transitions. [2021-08-06 13:53:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:37,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:37,268 INFO L225 Difference]: With dead ends: 5529 [2021-08-06 13:53:37,268 INFO L226 Difference]: Without dead ends: 5529 [2021-08-06 13:53:37,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1076.4ms TimeCoverageRelationStatistics Valid=320, Invalid=870, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:53:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-08-06 13:53:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 3167. [2021-08-06 13:53:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 3165 states have (on average 2.575039494470774) internal successors, (8150), 3166 states have internal predecessors, (8150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 8150 transitions. [2021-08-06 13:53:37,318 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 8150 transitions. Word has length 105 [2021-08-06 13:53:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:37,318 INFO L470 AbstractCegarLoop]: Abstraction has 3167 states and 8150 transitions. [2021-08-06 13:53:37,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 8150 transitions. [2021-08-06 13:53:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:37,323 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:37,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:37,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-06 13:53:37,323 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:37,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1752148257, now seen corresponding path program 20 times [2021-08-06 13:53:37,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:37,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36970664] [2021-08-06 13:53:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:37,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:37,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:37,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36970664] [2021-08-06 13:53:37,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36970664] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:37,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:37,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:37,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986022556] [2021-08-06 13:53:37,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:37,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:37,843 INFO L87 Difference]: Start difference. First operand 3167 states and 8150 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:38,944 INFO L93 Difference]: Finished difference Result 4341 states and 10619 transitions. [2021-08-06 13:53:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:38,951 INFO L225 Difference]: With dead ends: 4341 [2021-08-06 13:53:38,951 INFO L226 Difference]: Without dead ends: 4341 [2021-08-06 13:53:38,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 909.1ms TimeCoverageRelationStatistics Valid=300, Invalid=960, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2021-08-06 13:53:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3171. [2021-08-06 13:53:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3169 states have (on average 2.5749447775323446) internal successors, (8160), 3170 states have internal predecessors, (8160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 8160 transitions. [2021-08-06 13:53:38,999 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 8160 transitions. Word has length 105 [2021-08-06 13:53:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:38,999 INFO L470 AbstractCegarLoop]: Abstraction has 3171 states and 8160 transitions. [2021-08-06 13:53:38,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 8160 transitions. [2021-08-06 13:53:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:39,004 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:39,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:39,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-06 13:53:39,004 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:39,004 INFO L82 PathProgramCache]: Analyzing trace with hash 307986887, now seen corresponding path program 21 times [2021-08-06 13:53:39,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:39,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825367073] [2021-08-06 13:53:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:39,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:39,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:39,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825367073] [2021-08-06 13:53:39,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825367073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:39,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:39,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:39,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421480171] [2021-08-06 13:53:39,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:39,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:39,558 INFO L87 Difference]: Start difference. First operand 3171 states and 8160 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:40,769 INFO L93 Difference]: Finished difference Result 4477 states and 10890 transitions. [2021-08-06 13:53:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:40,776 INFO L225 Difference]: With dead ends: 4477 [2021-08-06 13:53:40,776 INFO L226 Difference]: Without dead ends: 4477 [2021-08-06 13:53:40,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 974.6ms TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:53:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2021-08-06 13:53:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 3169. [2021-08-06 13:53:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 2.5749921060940952) internal successors, (8155), 3168 states have internal predecessors, (8155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 8155 transitions. [2021-08-06 13:53:40,823 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 8155 transitions. Word has length 105 [2021-08-06 13:53:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:40,824 INFO L470 AbstractCegarLoop]: Abstraction has 3169 states and 8155 transitions. [2021-08-06 13:53:40,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 8155 transitions. [2021-08-06 13:53:40,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:40,827 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:40,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:40,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-06 13:53:40,828 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:40,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2145877575, now seen corresponding path program 22 times [2021-08-06 13:53:40,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:40,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530411815] [2021-08-06 13:53:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:40,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:41,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:41,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530411815] [2021-08-06 13:53:41,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530411815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:41,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:41,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:41,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705128850] [2021-08-06 13:53:41,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:41,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:41,424 INFO L87 Difference]: Start difference. First operand 3169 states and 8155 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:42,674 INFO L93 Difference]: Finished difference Result 4324 states and 10585 transitions. [2021-08-06 13:53:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:42,674 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:42,680 INFO L225 Difference]: With dead ends: 4324 [2021-08-06 13:53:42,681 INFO L226 Difference]: Without dead ends: 4324 [2021-08-06 13:53:42,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1028.1ms TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2021-08-06 13:53:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2021-08-06 13:53:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 3177. [2021-08-06 13:53:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 3175 states have (on average 2.574803149606299) internal successors, (8175), 3176 states have internal predecessors, (8175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 8175 transitions. [2021-08-06 13:53:42,731 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 8175 transitions. Word has length 105 [2021-08-06 13:53:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:42,731 INFO L470 AbstractCegarLoop]: Abstraction has 3177 states and 8175 transitions. [2021-08-06 13:53:42,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 8175 transitions. [2021-08-06 13:53:42,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:42,735 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:42,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:42,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-06 13:53:42,736 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:42,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1340810287, now seen corresponding path program 23 times [2021-08-06 13:53:42,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:42,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387056298] [2021-08-06 13:53:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:42,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:43,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:43,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387056298] [2021-08-06 13:53:43,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387056298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:43,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:43,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:43,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629466089] [2021-08-06 13:53:43,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:43,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:43,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:43,193 INFO L87 Difference]: Start difference. First operand 3177 states and 8175 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:44,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:44,385 INFO L93 Difference]: Finished difference Result 4314 states and 10563 transitions. [2021-08-06 13:53:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:44,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:44,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:44,392 INFO L225 Difference]: With dead ends: 4314 [2021-08-06 13:53:44,392 INFO L226 Difference]: Without dead ends: 4314 [2021-08-06 13:53:44,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 997.4ms TimeCoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:53:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2021-08-06 13:53:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 3169. [2021-08-06 13:53:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 2.5749921060940952) internal successors, (8155), 3168 states have internal predecessors, (8155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 8155 transitions. [2021-08-06 13:53:44,437 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 8155 transitions. Word has length 105 [2021-08-06 13:53:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:44,437 INFO L470 AbstractCegarLoop]: Abstraction has 3169 states and 8155 transitions. [2021-08-06 13:53:44,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 8155 transitions. [2021-08-06 13:53:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:44,441 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:44,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:44,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-06 13:53:44,442 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:44,442 INFO L82 PathProgramCache]: Analyzing trace with hash -32569367, now seen corresponding path program 24 times [2021-08-06 13:53:44,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:44,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640939769] [2021-08-06 13:53:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:44,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:44,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:44,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640939769] [2021-08-06 13:53:44,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640939769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:44,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:44,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:44,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043480826] [2021-08-06 13:53:44,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:44,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:44,893 INFO L87 Difference]: Start difference. First operand 3169 states and 8155 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:45,851 INFO L93 Difference]: Finished difference Result 4240 states and 10328 transitions. [2021-08-06 13:53:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:45,857 INFO L225 Difference]: With dead ends: 4240 [2021-08-06 13:53:45,857 INFO L226 Difference]: Without dead ends: 4240 [2021-08-06 13:53:45,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 705.4ms TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2021-08-06 13:53:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 3175. [2021-08-06 13:53:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 3173 states have (on average 2.5748502994011977) internal successors, (8170), 3174 states have internal predecessors, (8170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 8170 transitions. [2021-08-06 13:53:45,904 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 8170 transitions. Word has length 105 [2021-08-06 13:53:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:45,904 INFO L470 AbstractCegarLoop]: Abstraction has 3175 states and 8170 transitions. [2021-08-06 13:53:45,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 8170 transitions. [2021-08-06 13:53:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:45,908 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:45,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:45,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-06 13:53:45,908 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:45,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:45,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1386903909, now seen corresponding path program 25 times [2021-08-06 13:53:45,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:45,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908645726] [2021-08-06 13:53:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:45,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:46,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:46,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908645726] [2021-08-06 13:53:46,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908645726] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:46,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:46,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:46,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255954295] [2021-08-06 13:53:46,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:46,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:46,197 INFO L87 Difference]: Start difference. First operand 3175 states and 8170 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:46,802 INFO L93 Difference]: Finished difference Result 4323 states and 10495 transitions. [2021-08-06 13:53:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:53:46,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:46,809 INFO L225 Difference]: With dead ends: 4323 [2021-08-06 13:53:46,809 INFO L226 Difference]: Without dead ends: 4323 [2021-08-06 13:53:46,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 440.2ms TimeCoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:53:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-08-06 13:53:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3221. [2021-08-06 13:53:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3219 states have (on average 2.5734700217458837) internal successors, (8284), 3220 states have internal predecessors, (8284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 8284 transitions. [2021-08-06 13:53:46,860 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 8284 transitions. Word has length 105 [2021-08-06 13:53:46,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:46,861 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 8284 transitions. [2021-08-06 13:53:46,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:46,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 8284 transitions. [2021-08-06 13:53:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:46,865 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:46,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:46,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-06 13:53:46,865 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash 103688637, now seen corresponding path program 26 times [2021-08-06 13:53:46,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:46,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600084211] [2021-08-06 13:53:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:46,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:47,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:47,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600084211] [2021-08-06 13:53:47,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600084211] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:47,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:47,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:47,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885913695] [2021-08-06 13:53:47,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:47,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:47,273 INFO L87 Difference]: Start difference. First operand 3221 states and 8284 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:48,291 INFO L93 Difference]: Finished difference Result 3963 states and 9725 transitions. [2021-08-06 13:53:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:48,292 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:48,297 INFO L225 Difference]: With dead ends: 3963 [2021-08-06 13:53:48,297 INFO L226 Difference]: Without dead ends: 3963 [2021-08-06 13:53:48,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 876.0ms TimeCoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3963 states. [2021-08-06 13:53:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3963 to 3221. [2021-08-06 13:53:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3219 states have (on average 2.5734700217458837) internal successors, (8284), 3220 states have internal predecessors, (8284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 8284 transitions. [2021-08-06 13:53:48,345 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 8284 transitions. Word has length 105 [2021-08-06 13:53:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:48,345 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 8284 transitions. [2021-08-06 13:53:48,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 8284 transitions. [2021-08-06 13:53:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:48,349 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:48,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:48,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-06 13:53:48,349 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2090048361, now seen corresponding path program 27 times [2021-08-06 13:53:48,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:48,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387314075] [2021-08-06 13:53:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:48,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:48,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:48,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387314075] [2021-08-06 13:53:48,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387314075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:48,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:48,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:48,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839091190] [2021-08-06 13:53:48,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:48,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:48,770 INFO L87 Difference]: Start difference. First operand 3221 states and 8284 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:49,892 INFO L93 Difference]: Finished difference Result 4046 states and 9884 transitions. [2021-08-06 13:53:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:49,892 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:49,898 INFO L225 Difference]: With dead ends: 4046 [2021-08-06 13:53:49,898 INFO L226 Difference]: Without dead ends: 4046 [2021-08-06 13:53:49,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 954.0ms TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:53:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2021-08-06 13:53:49,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3213. [2021-08-06 13:53:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 3211 states have (on average 2.573653067580193) internal successors, (8264), 3212 states have internal predecessors, (8264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 8264 transitions. [2021-08-06 13:53:49,942 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 8264 transitions. Word has length 105 [2021-08-06 13:53:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:49,942 INFO L470 AbstractCegarLoop]: Abstraction has 3213 states and 8264 transitions. [2021-08-06 13:53:49,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 8264 transitions. [2021-08-06 13:53:49,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:49,946 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:49,947 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:49,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-06 13:53:49,947 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:49,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:49,947 INFO L82 PathProgramCache]: Analyzing trace with hash 388670827, now seen corresponding path program 28 times [2021-08-06 13:53:49,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:49,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854197735] [2021-08-06 13:53:49,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:49,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:50,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:50,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854197735] [2021-08-06 13:53:50,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854197735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:50,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:50,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-08-06 13:53:50,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419833079] [2021-08-06 13:53:50,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-06 13:53:50,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-06 13:53:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-08-06 13:53:50,449 INFO L87 Difference]: Start difference. First operand 3213 states and 8264 transitions. Second operand has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:52,094 INFO L93 Difference]: Finished difference Result 5208 states and 12971 transitions. [2021-08-06 13:53:52,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:53:52,095 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:52,102 INFO L225 Difference]: With dead ends: 5208 [2021-08-06 13:53:52,102 INFO L226 Difference]: Without dead ends: 5208 [2021-08-06 13:53:52,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1322.2ms TimeCoverageRelationStatistics Valid=445, Invalid=1195, Unknown=0, NotChecked=0, Total=1640 [2021-08-06 13:53:52,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2021-08-06 13:53:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 3369. [2021-08-06 13:53:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3367 states have (on average 2.570834570834571) internal successors, (8656), 3368 states have internal predecessors, (8656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 8656 transitions. [2021-08-06 13:53:52,143 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 8656 transitions. Word has length 105 [2021-08-06 13:53:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:52,144 INFO L470 AbstractCegarLoop]: Abstraction has 3369 states and 8656 transitions. [2021-08-06 13:53:52,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.25) internal successors, (105), 20 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 8656 transitions. [2021-08-06 13:53:52,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:52,147 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:52,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:52,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-06 13:53:52,147 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:52,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:52,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1386616731, now seen corresponding path program 29 times [2021-08-06 13:53:52,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:52,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918033727] [2021-08-06 13:53:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:52,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:52,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:52,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918033727] [2021-08-06 13:53:52,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918033727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:52,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:52,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:52,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499935366] [2021-08-06 13:53:52,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:52,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:52,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:52,420 INFO L87 Difference]: Start difference. First operand 3369 states and 8656 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:52,960 INFO L93 Difference]: Finished difference Result 4417 states and 10824 transitions. [2021-08-06 13:53:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:53:52,960 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:52,967 INFO L225 Difference]: With dead ends: 4417 [2021-08-06 13:53:52,967 INFO L226 Difference]: Without dead ends: 4417 [2021-08-06 13:53:52,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 410.9ms TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:53:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2021-08-06 13:53:52,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 3297. [2021-08-06 13:53:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 3295 states have (on average 2.568740515933232) internal successors, (8464), 3296 states have internal predecessors, (8464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 8464 transitions. [2021-08-06 13:53:53,006 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 8464 transitions. Word has length 105 [2021-08-06 13:53:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:53,006 INFO L470 AbstractCegarLoop]: Abstraction has 3297 states and 8464 transitions. [2021-08-06 13:53:53,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 8464 transitions. [2021-08-06 13:53:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:53,010 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:53,010 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:53,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-06 13:53:53,010 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:53,010 INFO L82 PathProgramCache]: Analyzing trace with hash 866588453, now seen corresponding path program 30 times [2021-08-06 13:53:53,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:53,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222666274] [2021-08-06 13:53:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:53,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:53,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:53,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222666274] [2021-08-06 13:53:53,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222666274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:53,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:53,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:53,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869048870] [2021-08-06 13:53:53,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:53,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:53,404 INFO L87 Difference]: Start difference. First operand 3297 states and 8464 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:54,509 INFO L93 Difference]: Finished difference Result 4927 states and 12302 transitions. [2021-08-06 13:53:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:53:54,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:54,516 INFO L225 Difference]: With dead ends: 4927 [2021-08-06 13:53:54,516 INFO L226 Difference]: Without dead ends: 4927 [2021-08-06 13:53:54,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 920.2ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2021-08-06 13:53:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 3397. [2021-08-06 13:53:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3395 states have (on average 2.5749631811487483) internal successors, (8742), 3396 states have internal predecessors, (8742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 8742 transitions. [2021-08-06 13:53:54,566 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 8742 transitions. Word has length 105 [2021-08-06 13:53:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:54,566 INFO L470 AbstractCegarLoop]: Abstraction has 3397 states and 8742 transitions. [2021-08-06 13:53:54,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 8742 transitions. [2021-08-06 13:53:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:54,570 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:54,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:54,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-06 13:53:54,571 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1060443765, now seen corresponding path program 31 times [2021-08-06 13:53:54,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:54,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070412114] [2021-08-06 13:53:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:54,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:55,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:55,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070412114] [2021-08-06 13:53:55,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070412114] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:55,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:55,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:55,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120719576] [2021-08-06 13:53:55,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:55,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:55,003 INFO L87 Difference]: Start difference. First operand 3397 states and 8742 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:56,226 INFO L93 Difference]: Finished difference Result 4690 states and 11666 transitions. [2021-08-06 13:53:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:53:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:56,232 INFO L225 Difference]: With dead ends: 4690 [2021-08-06 13:53:56,232 INFO L226 Difference]: Without dead ends: 4690 [2021-08-06 13:53:56,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 989.8ms TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:53:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2021-08-06 13:53:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 3365. [2021-08-06 13:53:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 3363 states have (on average 2.570324115373179) internal successors, (8644), 3364 states have internal predecessors, (8644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 8644 transitions. [2021-08-06 13:53:56,272 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 8644 transitions. Word has length 105 [2021-08-06 13:53:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:56,272 INFO L470 AbstractCegarLoop]: Abstraction has 3365 states and 8644 transitions. [2021-08-06 13:53:56,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 8644 transitions. [2021-08-06 13:53:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:56,276 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:56,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:56,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-06 13:53:56,276 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1015466563, now seen corresponding path program 32 times [2021-08-06 13:53:56,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:56,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815537079] [2021-08-06 13:53:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:56,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:56,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:56,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:56,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815537079] [2021-08-06 13:53:56,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815537079] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:56,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:56,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:56,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091238028] [2021-08-06 13:53:56,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:56,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:56,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:56,692 INFO L87 Difference]: Start difference. First operand 3365 states and 8644 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:57,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:57,881 INFO L93 Difference]: Finished difference Result 4796 states and 11855 transitions. [2021-08-06 13:53:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:57,888 INFO L225 Difference]: With dead ends: 4796 [2021-08-06 13:53:57,888 INFO L226 Difference]: Without dead ends: 4796 [2021-08-06 13:53:57,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 939.7ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2021-08-06 13:53:57,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 3325. [2021-08-06 13:53:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3323 states have (on average 2.5657538368943724) internal successors, (8526), 3324 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 8526 transitions. [2021-08-06 13:53:57,929 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 8526 transitions. Word has length 105 [2021-08-06 13:53:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:57,929 INFO L470 AbstractCegarLoop]: Abstraction has 3325 states and 8526 transitions. [2021-08-06 13:53:57,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 8526 transitions. [2021-08-06 13:53:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:57,933 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:57,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:57,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-06 13:53:57,933 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash -7985827, now seen corresponding path program 33 times [2021-08-06 13:53:57,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:57,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561290537] [2021-08-06 13:53:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:57,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:58,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:58,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561290537] [2021-08-06 13:53:58,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561290537] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:58,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:58,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-06 13:53:58,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015986587] [2021-08-06 13:53:58,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-06 13:53:58,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:58,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-06 13:53:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:53:58,239 INFO L87 Difference]: Start difference. First operand 3325 states and 8526 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:58,813 INFO L93 Difference]: Finished difference Result 3851 states and 9538 transitions. [2021-08-06 13:53:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 13:53:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:53:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:58,819 INFO L225 Difference]: With dead ends: 3851 [2021-08-06 13:53:58,819 INFO L226 Difference]: Without dead ends: 3851 [2021-08-06 13:53:58,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 415.7ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-08-06 13:53:58,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2021-08-06 13:53:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3131. [2021-08-06 13:53:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3129 states have (on average 2.5727069351230427) internal successors, (8050), 3130 states have internal predecessors, (8050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 8050 transitions. [2021-08-06 13:53:58,858 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 8050 transitions. Word has length 105 [2021-08-06 13:53:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:58,858 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 8050 transitions. [2021-08-06 13:53:58,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 8050 transitions. [2021-08-06 13:53:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:53:58,862 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:58,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:58,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-06 13:53:58,862 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:53:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:58,862 INFO L82 PathProgramCache]: Analyzing trace with hash 181315031, now seen corresponding path program 34 times [2021-08-06 13:53:58,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:58,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925304858] [2021-08-06 13:53:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:58,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:59,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:59,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925304858] [2021-08-06 13:53:59,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925304858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:59,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:59,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:59,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194021913] [2021-08-06 13:53:59,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:59,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:59,293 INFO L87 Difference]: Start difference. First operand 3131 states and 8050 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:00,244 INFO L93 Difference]: Finished difference Result 3862 states and 9508 transitions. [2021-08-06 13:54:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:00,250 INFO L225 Difference]: With dead ends: 3862 [2021-08-06 13:54:00,250 INFO L226 Difference]: Without dead ends: 3862 [2021-08-06 13:54:00,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 712.6ms TimeCoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:00,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-08-06 13:54:00,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 3101. [2021-08-06 13:54:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3099 states have (on average 2.5759922555663115) internal successors, (7983), 3100 states have internal predecessors, (7983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 7983 transitions. [2021-08-06 13:54:00,293 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 7983 transitions. Word has length 105 [2021-08-06 13:54:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:00,293 INFO L470 AbstractCegarLoop]: Abstraction has 3101 states and 7983 transitions. [2021-08-06 13:54:00,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 7983 transitions. [2021-08-06 13:54:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:00,297 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:00,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:00,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-06 13:54:00,298 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:00,298 INFO L82 PathProgramCache]: Analyzing trace with hash 479252945, now seen corresponding path program 35 times [2021-08-06 13:54:00,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:00,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873517363] [2021-08-06 13:54:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:00,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:00,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:00,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873517363] [2021-08-06 13:54:00,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873517363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:00,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:00,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:00,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572482488] [2021-08-06 13:54:00,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:00,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:00,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:00,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:00,725 INFO L87 Difference]: Start difference. First operand 3101 states and 7983 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:01,884 INFO L93 Difference]: Finished difference Result 5990 states and 14773 transitions. [2021-08-06 13:54:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-06 13:54:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:01,892 INFO L225 Difference]: With dead ends: 5990 [2021-08-06 13:54:01,893 INFO L226 Difference]: Without dead ends: 5990 [2021-08-06 13:54:01,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 951.0ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2021-08-06 13:54:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 3137. [2021-08-06 13:54:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 3135 states have (on average 2.5808612440191387) internal successors, (8091), 3136 states have internal predecessors, (8091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 8091 transitions. [2021-08-06 13:54:01,948 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 8091 transitions. Word has length 105 [2021-08-06 13:54:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:01,948 INFO L470 AbstractCegarLoop]: Abstraction has 3137 states and 8091 transitions. [2021-08-06 13:54:01,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 8091 transitions. [2021-08-06 13:54:01,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:01,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:01,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:01,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-06 13:54:01,952 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash 673108257, now seen corresponding path program 36 times [2021-08-06 13:54:01,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:01,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907263112] [2021-08-06 13:54:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:01,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:02,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:02,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907263112] [2021-08-06 13:54:02,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907263112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:02,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:02,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:02,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535877437] [2021-08-06 13:54:02,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:02,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:02,363 INFO L87 Difference]: Start difference. First operand 3137 states and 8091 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:03,608 INFO L93 Difference]: Finished difference Result 5767 states and 14205 transitions. [2021-08-06 13:54:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:54:03,609 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:03,617 INFO L225 Difference]: With dead ends: 5767 [2021-08-06 13:54:03,617 INFO L226 Difference]: Without dead ends: 5767 [2021-08-06 13:54:03,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 998.7ms TimeCoverageRelationStatistics Valid=287, Invalid=769, Unknown=0, NotChecked=0, Total=1056 [2021-08-06 13:54:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2021-08-06 13:54:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 3101. [2021-08-06 13:54:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3099 states have (on average 2.5759922555663115) internal successors, (7983), 3100 states have internal predecessors, (7983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 7983 transitions. [2021-08-06 13:54:03,671 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 7983 transitions. Word has length 105 [2021-08-06 13:54:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:03,671 INFO L470 AbstractCegarLoop]: Abstraction has 3101 states and 7983 transitions. [2021-08-06 13:54:03,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:03,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 7983 transitions. [2021-08-06 13:54:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:03,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:03,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:03,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-06 13:54:03,675 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:03,675 INFO L82 PathProgramCache]: Analyzing trace with hash 628131055, now seen corresponding path program 37 times [2021-08-06 13:54:03,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:03,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45625837] [2021-08-06 13:54:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:03,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:04,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:04,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45625837] [2021-08-06 13:54:04,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45625837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:04,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:04,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:04,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625499750] [2021-08-06 13:54:04,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:04,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:04,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:04,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:04,071 INFO L87 Difference]: Start difference. First operand 3101 states and 7983 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:05,276 INFO L93 Difference]: Finished difference Result 5353 states and 13166 transitions. [2021-08-06 13:54:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:05,276 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:05,283 INFO L225 Difference]: With dead ends: 5353 [2021-08-06 13:54:05,284 INFO L226 Difference]: Without dead ends: 5353 [2021-08-06 13:54:05,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 963.0ms TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2021-08-06 13:54:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3065. [2021-08-06 13:54:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 3063 states have (on average 2.5710088148873655) internal successors, (7875), 3064 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 7875 transitions. [2021-08-06 13:54:05,331 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 7875 transitions. Word has length 105 [2021-08-06 13:54:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:05,331 INFO L470 AbstractCegarLoop]: Abstraction has 3065 states and 7875 transitions. [2021-08-06 13:54:05,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 7875 transitions. [2021-08-06 13:54:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:05,335 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:05,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:05,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-06 13:54:05,335 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:05,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1167729499, now seen corresponding path program 38 times [2021-08-06 13:54:05,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:05,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087668998] [2021-08-06 13:54:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:05,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:05,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:05,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087668998] [2021-08-06 13:54:05,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087668998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:05,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:05,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:05,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782340785] [2021-08-06 13:54:05,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:05,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:05,772 INFO L87 Difference]: Start difference. First operand 3065 states and 7875 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:07,340 INFO L93 Difference]: Finished difference Result 5321 states and 13007 transitions. [2021-08-06 13:54:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-06 13:54:07,341 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:07,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:07,349 INFO L225 Difference]: With dead ends: 5321 [2021-08-06 13:54:07,349 INFO L226 Difference]: Without dead ends: 5321 [2021-08-06 13:54:07,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1390.7ms TimeCoverageRelationStatistics Valid=450, Invalid=1032, Unknown=0, NotChecked=0, Total=1482 [2021-08-06 13:54:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2021-08-06 13:54:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 2717. [2021-08-06 13:54:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2715 states have (on average 2.560220994475138) internal successors, (6951), 2716 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 6951 transitions. [2021-08-06 13:54:07,396 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 6951 transitions. Word has length 105 [2021-08-06 13:54:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:07,396 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 6951 transitions. [2021-08-06 13:54:07,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 6951 transitions. [2021-08-06 13:54:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:07,399 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:07,399 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:07,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-06 13:54:07,399 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:07,400 INFO L82 PathProgramCache]: Analyzing trace with hash -973874187, now seen corresponding path program 39 times [2021-08-06 13:54:07,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:07,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388250321] [2021-08-06 13:54:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:07,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:07,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:07,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388250321] [2021-08-06 13:54:07,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388250321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:07,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:07,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:07,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991688617] [2021-08-06 13:54:07,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:07,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:07,812 INFO L87 Difference]: Start difference. First operand 2717 states and 6951 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:09,633 INFO L93 Difference]: Finished difference Result 5098 states and 12439 transitions. [2021-08-06 13:54:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-06 13:54:09,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:09,639 INFO L225 Difference]: With dead ends: 5098 [2021-08-06 13:54:09,639 INFO L226 Difference]: Without dead ends: 5098 [2021-08-06 13:54:09,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1442.5ms TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2021-08-06 13:54:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2021-08-06 13:54:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 2681. [2021-08-06 13:54:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2679 states have (on average 2.5543113101903696) internal successors, (6843), 2680 states have internal predecessors, (6843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 6843 transitions. [2021-08-06 13:54:09,677 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 6843 transitions. Word has length 105 [2021-08-06 13:54:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:09,677 INFO L470 AbstractCegarLoop]: Abstraction has 2681 states and 6843 transitions. [2021-08-06 13:54:09,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 6843 transitions. [2021-08-06 13:54:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:09,680 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:09,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:09,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-06 13:54:09,680 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:09,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:09,680 INFO L82 PathProgramCache]: Analyzing trace with hash -69569917, now seen corresponding path program 40 times [2021-08-06 13:54:09,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:09,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543303437] [2021-08-06 13:54:09,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:09,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:10,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:10,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543303437] [2021-08-06 13:54:10,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543303437] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:10,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:10,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:10,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203410028] [2021-08-06 13:54:10,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:10,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:10,065 INFO L87 Difference]: Start difference. First operand 2681 states and 6843 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:11,402 INFO L93 Difference]: Finished difference Result 4408 states and 10764 transitions. [2021-08-06 13:54:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:54:11,402 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:11,408 INFO L225 Difference]: With dead ends: 4408 [2021-08-06 13:54:11,408 INFO L226 Difference]: Without dead ends: 4408 [2021-08-06 13:54:11,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1037.4ms TimeCoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:54:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-08-06 13:54:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 2669. [2021-08-06 13:54:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2667 states have (on average 2.5523059617547807) internal successors, (6807), 2668 states have internal predecessors, (6807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 6807 transitions. [2021-08-06 13:54:11,447 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 6807 transitions. Word has length 105 [2021-08-06 13:54:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:11,447 INFO L470 AbstractCegarLoop]: Abstraction has 2669 states and 6807 transitions. [2021-08-06 13:54:11,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 6807 transitions. [2021-08-06 13:54:11,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:11,450 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:11,450 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:11,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-06 13:54:11,450 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:11,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1403207647, now seen corresponding path program 41 times [2021-08-06 13:54:11,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:11,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274795688] [2021-08-06 13:54:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:11,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:11,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:11,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274795688] [2021-08-06 13:54:11,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274795688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:11,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:11,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:11,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876568975] [2021-08-06 13:54:11,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:11,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:11,895 INFO L87 Difference]: Start difference. First operand 2669 states and 6807 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:13,001 INFO L93 Difference]: Finished difference Result 4370 states and 10619 transitions. [2021-08-06 13:54:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:13,007 INFO L225 Difference]: With dead ends: 4370 [2021-08-06 13:54:13,007 INFO L226 Difference]: Without dead ends: 4370 [2021-08-06 13:54:13,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 899.2ms TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2021-08-06 13:54:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2671. [2021-08-06 13:54:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2671 states, 2669 states have (on average 2.552266766579243) internal successors, (6812), 2670 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 6812 transitions. [2021-08-06 13:54:13,043 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 6812 transitions. Word has length 105 [2021-08-06 13:54:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:13,044 INFO L470 AbstractCegarLoop]: Abstraction has 2671 states and 6812 transitions. [2021-08-06 13:54:13,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 6812 transitions. [2021-08-06 13:54:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:13,046 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:13,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:13,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-06 13:54:13,047 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash 44401653, now seen corresponding path program 42 times [2021-08-06 13:54:13,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:13,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384409461] [2021-08-06 13:54:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:13,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:13,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:13,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384409461] [2021-08-06 13:54:13,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384409461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:13,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:13,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:13,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183501531] [2021-08-06 13:54:13,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:13,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:13,430 INFO L87 Difference]: Start difference. First operand 2671 states and 6812 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:14,632 INFO L93 Difference]: Finished difference Result 4384 states and 10654 transitions. [2021-08-06 13:54:14,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:54:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:14,639 INFO L225 Difference]: With dead ends: 4384 [2021-08-06 13:54:14,639 INFO L226 Difference]: Without dead ends: 4384 [2021-08-06 13:54:14,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 971.0ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:54:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2021-08-06 13:54:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 2657. [2021-08-06 13:54:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 2655 states have (on average 2.550282485875706) internal successors, (6771), 2656 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 6771 transitions. [2021-08-06 13:54:14,682 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 6771 transitions. Word has length 105 [2021-08-06 13:54:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:14,682 INFO L470 AbstractCegarLoop]: Abstraction has 2657 states and 6771 transitions. [2021-08-06 13:54:14,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 6771 transitions. [2021-08-06 13:54:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:14,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:14,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:14,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-06 13:54:14,685 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1477228059, now seen corresponding path program 43 times [2021-08-06 13:54:14,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:14,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085208082] [2021-08-06 13:54:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:14,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:15,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:15,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085208082] [2021-08-06 13:54:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085208082] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:15,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177525465] [2021-08-06 13:54:15,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:15,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:15,076 INFO L87 Difference]: Start difference. First operand 2657 states and 6771 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:16,043 INFO L93 Difference]: Finished difference Result 3276 states and 7947 transitions. [2021-08-06 13:54:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:16,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:16,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:16,048 INFO L225 Difference]: With dead ends: 3276 [2021-08-06 13:54:16,049 INFO L226 Difference]: Without dead ends: 3276 [2021-08-06 13:54:16,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 738.9ms TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-08-06 13:54:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2639. [2021-08-06 13:54:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2637 states have (on average 2.5506257110352673) internal successors, (6726), 2638 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 6726 transitions. [2021-08-06 13:54:16,084 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 6726 transitions. Word has length 105 [2021-08-06 13:54:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:16,084 INFO L470 AbstractCegarLoop]: Abstraction has 2639 states and 6726 transitions. [2021-08-06 13:54:16,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:16,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 6726 transitions. [2021-08-06 13:54:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:16,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:16,088 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:16,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-06 13:54:16,088 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:16,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash -156549201, now seen corresponding path program 44 times [2021-08-06 13:54:16,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:16,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019609837] [2021-08-06 13:54:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:16,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:16,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:16,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019609837] [2021-08-06 13:54:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019609837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:16,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:16,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:16,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568469435] [2021-08-06 13:54:16,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:16,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:16,500 INFO L87 Difference]: Start difference. First operand 2639 states and 6726 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:17,379 INFO L93 Difference]: Finished difference Result 3425 states and 8239 transitions. [2021-08-06 13:54:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:17,379 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:17,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:17,384 INFO L225 Difference]: With dead ends: 3425 [2021-08-06 13:54:17,384 INFO L226 Difference]: Without dead ends: 3425 [2021-08-06 13:54:17,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 727.7ms TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:17,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2021-08-06 13:54:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 2633. [2021-08-06 13:54:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2631 states have (on average 2.5507411630558723) internal successors, (6711), 2632 states have internal predecessors, (6711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 6711 transitions. [2021-08-06 13:54:17,419 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 6711 transitions. Word has length 105 [2021-08-06 13:54:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:17,419 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 6711 transitions. [2021-08-06 13:54:17,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 6711 transitions. [2021-08-06 13:54:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:17,422 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:17,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:17,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-06 13:54:17,422 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:17,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:17,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1291060099, now seen corresponding path program 45 times [2021-08-06 13:54:17,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:17,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396086277] [2021-08-06 13:54:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:17,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:17,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:17,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396086277] [2021-08-06 13:54:17,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396086277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:17,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:17,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:17,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838208446] [2021-08-06 13:54:17,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:17,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:17,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:17,849 INFO L87 Difference]: Start difference. First operand 2633 states and 6711 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:18,854 INFO L93 Difference]: Finished difference Result 3243 states and 7877 transitions. [2021-08-06 13:54:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:54:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:18,858 INFO L225 Difference]: With dead ends: 3243 [2021-08-06 13:54:18,859 INFO L226 Difference]: Without dead ends: 3243 [2021-08-06 13:54:18,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 811.7ms TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:54:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2021-08-06 13:54:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 2540. [2021-08-06 13:54:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 2.565011820330969) internal successors, (6510), 2539 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:18,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 6510 transitions. [2021-08-06 13:54:18,888 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 6510 transitions. Word has length 105 [2021-08-06 13:54:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:18,889 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 6510 transitions. [2021-08-06 13:54:18,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 6510 transitions. [2021-08-06 13:54:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:18,891 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:18,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:18,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-06 13:54:18,891 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash -13383887, now seen corresponding path program 46 times [2021-08-06 13:54:18,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:18,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710095909] [2021-08-06 13:54:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:18,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:19,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:19,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710095909] [2021-08-06 13:54:19,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710095909] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:19,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:19,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:19,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485105946] [2021-08-06 13:54:19,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:19,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:19,296 INFO L87 Difference]: Start difference. First operand 2540 states and 6510 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:20,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:20,198 INFO L93 Difference]: Finished difference Result 3040 states and 7523 transitions. [2021-08-06 13:54:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:54:20,199 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:20,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:20,202 INFO L225 Difference]: With dead ends: 3040 [2021-08-06 13:54:20,202 INFO L226 Difference]: Without dead ends: 3040 [2021-08-06 13:54:20,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 698.1ms TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-08-06 13:54:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2522. [2021-08-06 13:54:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2520 states have (on average 2.5654761904761907) internal successors, (6465), 2521 states have internal predecessors, (6465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 6465 transitions. [2021-08-06 13:54:20,228 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 6465 transitions. Word has length 105 [2021-08-06 13:54:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:20,228 INFO L470 AbstractCegarLoop]: Abstraction has 2522 states and 6465 transitions. [2021-08-06 13:54:20,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 6465 transitions. [2021-08-06 13:54:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:20,231 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:20,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:20,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-06 13:54:20,231 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 122874117, now seen corresponding path program 47 times [2021-08-06 13:54:20,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:20,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622665367] [2021-08-06 13:54:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:20,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:20,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:20,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622665367] [2021-08-06 13:54:20,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622665367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:20,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:20,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:20,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955566478] [2021-08-06 13:54:20,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:20,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:20,659 INFO L87 Difference]: Start difference. First operand 2522 states and 6465 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:21,570 INFO L93 Difference]: Finished difference Result 3262 states and 7979 transitions. [2021-08-06 13:54:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:54:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:21,575 INFO L225 Difference]: With dead ends: 3262 [2021-08-06 13:54:21,575 INFO L226 Difference]: Without dead ends: 3262 [2021-08-06 13:54:21,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 713.6ms TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:21,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-08-06 13:54:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2524. [2021-08-06 13:54:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2522 states have (on average 2.5654242664551945) internal successors, (6470), 2523 states have internal predecessors, (6470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 6470 transitions. [2021-08-06 13:54:21,620 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 6470 transitions. Word has length 105 [2021-08-06 13:54:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:21,620 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 6470 transitions. [2021-08-06 13:54:21,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 6470 transitions. [2021-08-06 13:54:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:21,623 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:21,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:21,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-06 13:54:21,623 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:21,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2109233841, now seen corresponding path program 48 times [2021-08-06 13:54:21,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:21,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780728564] [2021-08-06 13:54:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:21,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:22,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:22,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780728564] [2021-08-06 13:54:22,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780728564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:22,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:22,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:22,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654753541] [2021-08-06 13:54:22,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:22,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:22,097 INFO L87 Difference]: Start difference. First operand 2524 states and 6470 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:23,131 INFO L93 Difference]: Finished difference Result 3345 states and 8138 transitions. [2021-08-06 13:54:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:23,137 INFO L225 Difference]: With dead ends: 3345 [2021-08-06 13:54:23,137 INFO L226 Difference]: Without dead ends: 3345 [2021-08-06 13:54:23,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 802.7ms TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:54:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2021-08-06 13:54:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 2516. [2021-08-06 13:54:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2514 states have (on average 2.5656324582338903) internal successors, (6450), 2515 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 6450 transitions. [2021-08-06 13:54:23,167 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 6450 transitions. Word has length 105 [2021-08-06 13:54:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:23,167 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 6450 transitions. [2021-08-06 13:54:23,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 6450 transitions. [2021-08-06 13:54:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:23,169 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:23,169 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:23,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-06 13:54:23,170 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:23,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:23,170 INFO L82 PathProgramCache]: Analyzing trace with hash 980458999, now seen corresponding path program 49 times [2021-08-06 13:54:23,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:23,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234405158] [2021-08-06 13:54:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:23,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:23,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:23,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234405158] [2021-08-06 13:54:23,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234405158] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:23,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:23,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:23,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526770704] [2021-08-06 13:54:23,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:23,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:23,577 INFO L87 Difference]: Start difference. First operand 2516 states and 6450 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:24,440 INFO L93 Difference]: Finished difference Result 2845 states and 7083 transitions. [2021-08-06 13:54:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:54:24,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:24,444 INFO L225 Difference]: With dead ends: 2845 [2021-08-06 13:54:24,445 INFO L226 Difference]: Without dead ends: 2845 [2021-08-06 13:54:24,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 637.9ms TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2021-08-06 13:54:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2516. [2021-08-06 13:54:24,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2514 states have (on average 2.5656324582338903) internal successors, (6450), 2515 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 6450 transitions. [2021-08-06 13:54:24,472 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 6450 transitions. Word has length 105 [2021-08-06 13:54:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:24,472 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 6450 transitions. [2021-08-06 13:54:24,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 6450 transitions. [2021-08-06 13:54:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:24,475 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:24,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-06 13:54:24,475 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:24,475 INFO L82 PathProgramCache]: Analyzing trace with hash -916601107, now seen corresponding path program 50 times [2021-08-06 13:54:24,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:24,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193562138] [2021-08-06 13:54:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:24,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:24,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:24,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193562138] [2021-08-06 13:54:24,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193562138] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:24,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:24,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:24,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969038813] [2021-08-06 13:54:24,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:24,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:24,912 INFO L87 Difference]: Start difference. First operand 2516 states and 6450 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:25,753 INFO L93 Difference]: Finished difference Result 3058 states and 7508 transitions. [2021-08-06 13:54:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:54:25,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:25,757 INFO L225 Difference]: With dead ends: 3058 [2021-08-06 13:54:25,757 INFO L226 Difference]: Without dead ends: 3058 [2021-08-06 13:54:25,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 706.5ms TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:54:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3058 states. [2021-08-06 13:54:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3058 to 2510. [2021-08-06 13:54:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2508 states have (on average 2.5657894736842106) internal successors, (6435), 2509 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 6435 transitions. [2021-08-06 13:54:25,783 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 6435 transitions. Word has length 105 [2021-08-06 13:54:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:25,783 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 6435 transitions. [2021-08-06 13:54:25,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 6435 transitions. [2021-08-06 13:54:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-06 13:54:25,785 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:25,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:25,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-06 13:54:25,785 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1069758617, now seen corresponding path program 51 times [2021-08-06 13:54:25,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:25,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690188566] [2021-08-06 13:54:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:25,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:26,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:26,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690188566] [2021-08-06 13:54:26,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690188566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:26,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:26,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:26,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840918000] [2021-08-06 13:54:26,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:26,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:26,203 INFO L87 Difference]: Start difference. First operand 2510 states and 6435 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:27,120 INFO L93 Difference]: Finished difference Result 2915 states and 7220 transitions. [2021-08-06 13:54:27,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:54:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-06 13:54:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:27,124 INFO L225 Difference]: With dead ends: 2915 [2021-08-06 13:54:27,124 INFO L226 Difference]: Without dead ends: 2915 [2021-08-06 13:54:27,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 728.3ms TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 13:54:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-08-06 13:54:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2405. [2021-08-06 13:54:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 2.5902662229617306) internal successors, (6227), 2404 states have internal predecessors, (6227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 6227 transitions. [2021-08-06 13:54:27,150 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 6227 transitions. Word has length 105 [2021-08-06 13:54:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:27,151 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 6227 transitions. [2021-08-06 13:54:27,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 6227 transitions. [2021-08-06 13:54:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-08-06 13:54:27,153 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:27,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:27,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-06 13:54:27,153 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2006590055, now seen corresponding path program 1 times [2021-08-06 13:54:27,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:27,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917987987] [2021-08-06 13:54:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:27,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:27,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:27,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917987987] [2021-08-06 13:54:27,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917987987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:27,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:27,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-06 13:54:27,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19202107] [2021-08-06 13:54:27,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-06 13:54:27,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-06 13:54:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:54:27,968 INFO L87 Difference]: Start difference. First operand 2405 states and 6227 transitions. Second operand has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:30,479 INFO L93 Difference]: Finished difference Result 3392 states and 8452 transitions. [2021-08-06 13:54:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-06 13:54:30,480 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-08-06 13:54:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:30,484 INFO L225 Difference]: With dead ends: 3392 [2021-08-06 13:54:30,484 INFO L226 Difference]: Without dead ends: 3220 [2021-08-06 13:54:30,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2135.9ms TimeCoverageRelationStatistics Valid=430, Invalid=2020, Unknown=0, NotChecked=0, Total=2450 [2021-08-06 13:54:30,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2021-08-06 13:54:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 2549. [2021-08-06 13:54:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2548 states have (on average 2.580455259026688) internal successors, (6575), 2548 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:30,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 6575 transitions. [2021-08-06 13:54:30,518 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 6575 transitions. Word has length 111 [2021-08-06 13:54:30,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:30,518 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 6575 transitions. [2021-08-06 13:54:30,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 6575 transitions. [2021-08-06 13:54:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-08-06 13:54:30,521 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:30,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:30,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-06 13:54:30,522 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash -632459417, now seen corresponding path program 2 times [2021-08-06 13:54:30,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:30,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481054481] [2021-08-06 13:54:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:30,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:31,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:31,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481054481] [2021-08-06 13:54:31,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481054481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:31,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:31,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-06 13:54:31,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790372521] [2021-08-06 13:54:31,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-06 13:54:31,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-06 13:54:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:54:31,323 INFO L87 Difference]: Start difference. First operand 2549 states and 6575 transitions. Second operand has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:33,869 INFO L93 Difference]: Finished difference Result 3295 states and 8187 transitions. [2021-08-06 13:54:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-06 13:54:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-08-06 13:54:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:33,874 INFO L225 Difference]: With dead ends: 3295 [2021-08-06 13:54:33,874 INFO L226 Difference]: Without dead ends: 3184 [2021-08-06 13:54:33,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2240.6ms TimeCoverageRelationStatistics Valid=447, Invalid=2103, Unknown=0, NotChecked=0, Total=2550 [2021-08-06 13:54:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2021-08-06 13:54:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2513. [2021-08-06 13:54:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2512 states have (on average 2.5792197452229297) internal successors, (6479), 2512 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 6479 transitions. [2021-08-06 13:54:33,902 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 6479 transitions. Word has length 111 [2021-08-06 13:54:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:33,902 INFO L470 AbstractCegarLoop]: Abstraction has 2513 states and 6479 transitions. [2021-08-06 13:54:33,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 6479 transitions. [2021-08-06 13:54:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-08-06 13:54:33,905 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:33,905 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:33,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-06 13:54:33,905 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1314862183, now seen corresponding path program 3 times [2021-08-06 13:54:33,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:33,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709623425] [2021-08-06 13:54:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:33,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:34,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:34,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709623425] [2021-08-06 13:54:34,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709623425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:34,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:34,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-06 13:54:34,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493753409] [2021-08-06 13:54:34,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-06 13:54:34,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-06 13:54:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:54:34,645 INFO L87 Difference]: Start difference. First operand 2513 states and 6479 transitions. Second operand has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:36,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:36,909 INFO L93 Difference]: Finished difference Result 3193 states and 7984 transitions. [2021-08-06 13:54:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-06 13:54:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-08-06 13:54:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:36,913 INFO L225 Difference]: With dead ends: 3193 [2021-08-06 13:54:36,913 INFO L226 Difference]: Without dead ends: 3025 [2021-08-06 13:54:36,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1925.3ms TimeCoverageRelationStatistics Valid=402, Invalid=1950, Unknown=0, NotChecked=0, Total=2352 [2021-08-06 13:54:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-08-06 13:54:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2441. [2021-08-06 13:54:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2440 states have (on average 2.5766393442622952) internal successors, (6287), 2440 states have internal predecessors, (6287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 6287 transitions. [2021-08-06 13:54:36,941 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 6287 transitions. Word has length 111 [2021-08-06 13:54:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:36,941 INFO L470 AbstractCegarLoop]: Abstraction has 2441 states and 6287 transitions. [2021-08-06 13:54:36,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:36,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 6287 transitions. [2021-08-06 13:54:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-08-06 13:54:36,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:36,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:36,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-06 13:54:36,944 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:36,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1631169177, now seen corresponding path program 4 times [2021-08-06 13:54:36,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:36,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840479051] [2021-08-06 13:54:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:36,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:37,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:37,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840479051] [2021-08-06 13:54:37,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840479051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:37,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:37,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-06 13:54:37,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450822169] [2021-08-06 13:54:37,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-06 13:54:37,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-06 13:54:37,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:54:37,761 INFO L87 Difference]: Start difference. First operand 2441 states and 6287 transitions. Second operand has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:40,102 INFO L93 Difference]: Finished difference Result 3103 states and 7749 transitions. [2021-08-06 13:54:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-06 13:54:40,103 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-08-06 13:54:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:40,106 INFO L225 Difference]: With dead ends: 3103 [2021-08-06 13:54:40,106 INFO L226 Difference]: Without dead ends: 2961 [2021-08-06 13:54:40,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1984.3ms TimeCoverageRelationStatistics Valid=402, Invalid=1950, Unknown=0, NotChecked=0, Total=2352 [2021-08-06 13:54:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-08-06 13:54:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2405. [2021-08-06 13:54:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 2.575291181364393) internal successors, (6191), 2404 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 6191 transitions. [2021-08-06 13:54:40,131 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 6191 transitions. Word has length 111 [2021-08-06 13:54:40,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:40,132 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 6191 transitions. [2021-08-06 13:54:40,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.269230769230769) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:40,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 6191 transitions. [2021-08-06 13:54:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-08-06 13:54:40,134 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:40,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:40,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-06 13:54:40,134 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:40,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1847179623, now seen corresponding path program 5 times [2021-08-06 13:54:40,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:40,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696538307] [2021-08-06 13:54:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:40,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:40,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:40,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696538307] [2021-08-06 13:54:40,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696538307] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:40,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:40,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-08-06 13:54:40,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344416373] [2021-08-06 13:54:40,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-06 13:54:40,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-06 13:54:40,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-08-06 13:54:40,985 INFO L87 Difference]: Start difference. First operand 2405 states and 6191 transitions. Second operand has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 28 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:43,556 INFO L93 Difference]: Finished difference Result 3136 states and 7768 transitions. [2021-08-06 13:54:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-06 13:54:43,557 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 28 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-08-06 13:54:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:43,560 INFO L225 Difference]: With dead ends: 3136 [2021-08-06 13:54:43,560 INFO L226 Difference]: Without dead ends: 2937 [2021-08-06 13:54:43,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2186.2ms TimeCoverageRelationStatistics Valid=477, Invalid=2493, Unknown=0, NotChecked=0, Total=2970 [2021-08-06 13:54:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2021-08-06 13:54:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2297. [2021-08-06 13:54:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2297 states, 2296 states have (on average 2.570993031358885) internal successors, (5903), 2296 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 5903 transitions. [2021-08-06 13:54:43,585 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 5903 transitions. Word has length 111 [2021-08-06 13:54:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:43,585 INFO L470 AbstractCegarLoop]: Abstraction has 2297 states and 5903 transitions. [2021-08-06 13:54:43,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.9642857142857144) internal successors, (111), 28 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:43,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 5903 transitions. [2021-08-06 13:54:43,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-08-06 13:54:43,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:43,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:43,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-06 13:54:43,588 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-06 13:54:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:43,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1145305493, now seen corresponding path program 6 times [2021-08-06 13:54:43,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:43,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518901757] [2021-08-06 13:54:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:43,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 13:54:43,609 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-06 13:54:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-06 13:54:43,666 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-06 13:54:43,666 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-06 13:54:43,667 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:54:43,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:54:43,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:54:43,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:54:43,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:54:43,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 13:54:43,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 13:54:43,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 13:54:43,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-06 13:54:43,673 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 13:54:43,674 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 13:54:43,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 01:54:43 BasicIcfg [2021-08-06 13:54:43,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 13:54:43,735 INFO L168 Benchmark]: Toolchain (without parser) took 109030.72 ms. Allocated memory was 207.6 MB in the beginning and 813.7 MB in the end (delta: 606.1 MB). Free memory was 170.3 MB in the beginning and 463.1 MB in the end (delta: -292.8 MB). Peak memory consumption was 314.8 MB. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 207.6 MB. Free memory is still 190.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.33 ms. Allocated memory is still 207.6 MB. Free memory was 170.1 MB in the beginning and 148.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 207.6 MB. Free memory was 148.1 MB in the beginning and 144.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L168 Benchmark]: Boogie Preprocessor took 34.68 ms. Allocated memory is still 207.6 MB. Free memory was 144.9 MB in the beginning and 142.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L168 Benchmark]: RCFGBuilder took 575.32 ms. Allocated memory is still 207.6 MB. Free memory was 142.3 MB in the beginning and 151.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L168 Benchmark]: TraceAbstraction took 107654.96 ms. Allocated memory was 207.6 MB in the beginning and 813.7 MB in the end (delta: 606.1 MB). Free memory was 150.7 MB in the beginning and 463.1 MB in the end (delta: -312.4 MB). Peak memory consumption was 293.7 MB. Max. memory is 8.0 GB. [2021-08-06 13:54:43,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 207.6 MB. Free memory is still 190.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 717.33 ms. Allocated memory is still 207.6 MB. Free memory was 170.1 MB in the beginning and 148.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.97 ms. Allocated memory is still 207.6 MB. Free memory was 148.1 MB in the beginning and 144.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.68 ms. Allocated memory is still 207.6 MB. Free memory was 144.9 MB in the beginning and 142.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 575.32 ms. Allocated memory is still 207.6 MB. Free memory was 142.3 MB in the beginning and 151.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 107654.96 ms. Allocated memory was 207.6 MB in the beginning and 813.7 MB in the end (delta: 606.1 MB). Free memory was 150.7 MB in the beginning and 463.1 MB in the end (delta: -312.4 MB). Peak memory consumption was 293.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; VAL [t1={7:0}, t2={8:0}] [L1688] 0 struct device *my_dev; VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1727] 0 return 0; VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1733] 0 int ret = my_drv_init(); VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1734] COND TRUE 0 ret==0 VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1735] 0 int probe_ret; VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1736] 0 struct my_data data; VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1705] 0 data->shared.a = 0 VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1706] 0 data->shared.b = 0 VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1707] 0 data->shared.a VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1675] COND FALSE 0 !(!expression) VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1708] 0 data->shared.b VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1675] COND FALSE 0 !(!expression) VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1709] 0 int res = __VERIFIER_nondet_int(); VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1710] COND FALSE 0 !(\read(res)) VAL [my_dev={0:0}, t1={7:0}, t2={8:0}] [L1712] 0 my_dev = &data->dev VAL [my_dev={9:24}, t1={7:0}, t2={8:0}] [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1690] 1 struct my_data *data; VAL [arg={0:0}, arg={0:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, arg={0:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1690] 2 struct my_data *data; VAL [arg={0:0}, arg={0:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1693] 2 data->shared.a = 1 VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1693] 1 data->shared.a = 1 VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 VAL [__mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1701] 1 return 0; VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1699] 2 data->shared.b = lb + 1 VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1701] 2 return 0; VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1715] 0 return 0; VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1737] 0 probe_ret = my_drv_probe(&data) VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1738] COND TRUE 0 probe_ret==0 VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1721] 0 void *status; VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1722] 0 \read(t1) VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1723] 0 \read(t2) VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1723] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1740] 0 data.shared.a VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1675] COND FALSE 0 !(!expression) VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1741] 0 data.shared.b VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1675] COND TRUE 0 !expression VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] [L1675] 0 reach_error() VAL [\result={0:0}, __mptr={9:24}, arg={0:0}, arg={0:0}, data={9:0}, lb=0, my_dev={9:24}, t1={7:0}, t2={8:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 4 procedures, 164 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 107488.2ms, OverallIterations: 64, TraceHistogramMax: 1, EmptinessCheckTime: 241.6ms, AutomataDifference: 75323.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 109.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12251 SDtfs, 36829 SDslu, 85765 SDs, 0 SdLazy, 42043 SolverSat, 3163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20128.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2330 GetRequests, 230 SyntacticMatches, 69 SemanticMatches, 2031 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11090 ImplicationChecksByTransitivity, 59635.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4325occurred in iteration=4, InterpolantAutomatonStates: 1345, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3041.8ms AutomataMinimizationTime, 63 MinimizatonAttempts, 77829 StatesRemovedByMinimization, 62 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 139.5ms SsaConstructionTime, 1012.0ms SatisfiabilityAnalysisTime, 26817.4ms InterpolantComputationTime, 6513 NumberOfCodeBlocks, 6513 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 6339 ConstructedInterpolants, 0 QuantifiedInterpolants, 88333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 63 InterpolantComputations, 63 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 proved your program to be incorrect! [2021-08-06 13:54:43,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...