/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 21:40:53,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 21:40:53,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 21:40:53,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 21:40:53,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 21:40:53,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 21:40:53,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 21:40:53,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 21:40:53,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 21:40:53,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 21:40:53,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 21:40:53,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 21:40:53,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 21:40:53,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 21:40:53,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 21:40:53,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 21:40:53,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 21:40:53,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 21:40:53,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 21:40:53,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 21:40:53,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 21:40:53,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 21:40:53,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 21:40:53,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 21:40:53,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 21:40:53,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 21:40:53,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 21:40:53,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 21:40:53,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 21:40:53,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 21:40:53,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 21:40:53,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 21:40:53,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 21:40:53,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 21:40:53,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 21:40:53,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 21:40:53,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 21:40:53,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 21:40:53,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 21:40:53,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 21:40:53,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 21:40:53,733 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-Delay.epf [2021-07-09 21:40:53,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 21:40:53,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 21:40:53,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 21:40:53,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 21:40:53,772 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 21:40:53,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 21:40:53,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 21:40:53,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 21:40:53,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 21:40:53,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 21:40:53,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 21:40:53,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:40:53,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 21:40:53,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 21:40:53,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 21:40:53,776 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 21:40:53,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 21:40:54,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 21:40:54,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 21:40:54,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 21:40:54,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 21:40:54,032 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 21:40:54,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-07-09 21:40:54,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef5e4b17/9d9872ca72474b308e4c4243caae709c/FLAGf965fb17f [2021-07-09 21:40:54,473 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 21:40:54,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-07-09 21:40:54,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef5e4b17/9d9872ca72474b308e4c4243caae709c/FLAGf965fb17f [2021-07-09 21:40:54,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ef5e4b17/9d9872ca72474b308e4c4243caae709c [2021-07-09 21:40:54,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 21:40:54,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 21:40:54,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 21:40:54,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 21:40:54,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 21:40:54,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db13008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54, skipping insertion in model container [2021-07-09 21:40:54,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 21:40:54,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 21:40:54,866 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2021-07-09 21:40:54,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 21:40:54,882 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 21:40:54,916 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2021-07-09 21:40:54,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 21:40:54,945 INFO L208 MainTranslator]: Completed translation [2021-07-09 21:40:54,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54 WrapperNode [2021-07-09 21:40:54,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 21:40:54,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 21:40:54,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 21:40:54,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 21:40:54,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 21:40:54,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 21:40:54,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 21:40:54,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 21:40:54,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:54,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... [2021-07-09 21:40:55,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 21:40:55,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 21:40:55,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 21:40:55,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 21:40:55,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 21:40:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 21:40:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 21:40:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-07-09 21:40:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 21:40:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 21:40:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 21:40:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 21:40:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 21:40:55,062 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 21:40:55,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 21:40:55,334 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-07-09 21:40:55,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:40:55 BoogieIcfgContainer [2021-07-09 21:40:55,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 21:40:55,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 21:40:55,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 21:40:55,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 21:40:55,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 09:40:54" (1/3) ... [2021-07-09 21:40:55,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d92980a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:40:55, skipping insertion in model container [2021-07-09 21:40:55,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 09:40:54" (2/3) ... [2021-07-09 21:40:55,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d92980a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:40:55, skipping insertion in model container [2021-07-09 21:40:55,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:40:55" (3/3) ... [2021-07-09 21:40:55,341 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-07-09 21:40:55,344 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 21:40:55,345 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 21:40:55,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 21:40:55,345 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 21:40:55,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,364 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,364 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,364 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,365 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,366 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,367 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,372 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,373 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,373 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,373 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,380 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,381 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,381 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,381 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,381 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,381 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,382 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,383 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,383 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 21:40:55,393 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-07-09 21:40:55,410 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 21:40:55,423 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:40:55,423 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:40:55,423 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:40:55,423 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:40:55,423 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:40:55,423 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:40:55,423 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:40:55,423 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 21:40:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 498 states have (on average 1.3353413654618473) internal successors, (665), 563 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:55,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 21:40:55,585 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-09 21:40:55,586 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 21:40:55,593 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:40:55,593 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:40:55,593 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:40:55,593 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:40:55,593 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:40:55,593 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:40:55,593 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:40:55,594 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread3Thread1of1ForFork0======== [2021-07-09 21:40:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 2826 states, 2463 states have (on average 1.6942752740560292) internal successors, (4173), 2825 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-07-09 21:40:55,812 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:40:55,813 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:40:55,813 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:40:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:40:55,819 INFO L82 PathProgramCache]: Analyzing trace with hash 842405542, now seen corresponding path program 1 times [2021-07-09 21:40:55,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:40:55,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869765828] [2021-07-09 21:40:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:40:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:40:56,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:40:56,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:40:56,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:40:56,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869765828] [2021-07-09 21:40:56,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869765828] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:40:56,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:40:56,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:40:56,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918577550] [2021-07-09 21:40:56,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:40:56,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:40:56,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:40:56,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:40:56,051 INFO L87 Difference]: Start difference. First operand has 2826 states, 2463 states have (on average 1.6942752740560292) internal successors, (4173), 2825 states have internal predecessors, (4173), 0 states have call successors, (0), 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 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:40:56,100 INFO L93 Difference]: Finished difference Result 2666 states and 3981 transitions. [2021-07-09 21:40:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:40:56,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-07-09 21:40:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:40:56,118 INFO L225 Difference]: With dead ends: 2666 [2021-07-09 21:40:56,119 INFO L226 Difference]: Without dead ends: 931 [2021-07-09 21:40:56,119 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:40:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-07-09 21:40:56,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2021-07-09 21:40:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 914 states have (on average 1.8698030634573304) internal successors, (1709), 930 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1709 transitions. [2021-07-09 21:40:56,202 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1709 transitions. Word has length 41 [2021-07-09 21:40:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:40:56,202 INFO L482 AbstractCegarLoop]: Abstraction has 931 states and 1709 transitions. [2021-07-09 21:40:56,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1709 transitions. [2021-07-09 21:40:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-07-09 21:40:56,204 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:40:56,204 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:40:56,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 21:40:56,204 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:40:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:40:56,205 INFO L82 PathProgramCache]: Analyzing trace with hash 772951848, now seen corresponding path program 1 times [2021-07-09 21:40:56,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:40:56,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239767355] [2021-07-09 21:40:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:40:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:40:56,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 21:40:56,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:40:56,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:40:56,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239767355] [2021-07-09 21:40:56,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239767355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:40:56,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:40:56,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 21:40:56,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204680962] [2021-07-09 21:40:56,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 21:40:56,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:40:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 21:40:56,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:40:56,291 INFO L87 Difference]: Start difference. First operand 931 states and 1709 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:40:56,320 INFO L93 Difference]: Finished difference Result 460 states and 619 transitions. [2021-07-09 21:40:56,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 21:40:56,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-07-09 21:40:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:40:56,324 INFO L225 Difference]: With dead ends: 460 [2021-07-09 21:40:56,324 INFO L226 Difference]: Without dead ends: 331 [2021-07-09 21:40:56,325 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 21:40:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-07-09 21:40:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-07-09 21:40:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 322 states have (on average 1.484472049689441) internal successors, (478), 330 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 478 transitions. [2021-07-09 21:40:56,330 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 478 transitions. Word has length 45 [2021-07-09 21:40:56,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:40:56,330 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 478 transitions. [2021-07-09 21:40:56,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,331 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 478 transitions. [2021-07-09 21:40:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-07-09 21:40:56,331 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:40:56,331 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:40:56,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 21:40:56,331 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:40:56,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:40:56,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1893354144, now seen corresponding path program 1 times [2021-07-09 21:40:56,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:40:56,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405139296] [2021-07-09 21:40:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:40:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:40:56,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:40:56,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:40:56,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:40:56,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:40:56,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405139296] [2021-07-09 21:40:56,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405139296] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:40:56,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:40:56,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 21:40:56,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012138669] [2021-07-09 21:40:56,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 21:40:56,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:40:56,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 21:40:56,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:40:56,389 INFO L87 Difference]: Start difference. First operand 331 states and 478 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:40:56,401 INFO L93 Difference]: Finished difference Result 295 states and 422 transitions. [2021-07-09 21:40:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 21:40:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-07-09 21:40:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:40:56,403 INFO L225 Difference]: With dead ends: 295 [2021-07-09 21:40:56,403 INFO L226 Difference]: Without dead ends: 256 [2021-07-09 21:40:56,403 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-09 21:40:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-07-09 21:40:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-07-09 21:40:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 249 states have (on average 1.5060240963855422) internal successors, (375), 255 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 375 transitions. [2021-07-09 21:40:56,407 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 375 transitions. Word has length 46 [2021-07-09 21:40:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:40:56,407 INFO L482 AbstractCegarLoop]: Abstraction has 256 states and 375 transitions. [2021-07-09 21:40:56,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 375 transitions. [2021-07-09 21:40:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-09 21:40:56,408 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:40:56,408 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:40:56,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 21:40:56,408 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:40:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:40:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash 933182114, now seen corresponding path program 1 times [2021-07-09 21:40:56,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:40:56,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115277547] [2021-07-09 21:40:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:40:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:40:56,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:40:56,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:40:56,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 21:40:56,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:40:56,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 21:40:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 21:40:56,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:40:56,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115277547] [2021-07-09 21:40:56,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115277547] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 21:40:56,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 21:40:56,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 21:40:56,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369289376] [2021-07-09 21:40:56,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-09 21:40:56,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:40:56,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-09 21:40:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-09 21:40:56,482 INFO L87 Difference]: Start difference. First operand 256 states and 375 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 21:40:56,510 INFO L93 Difference]: Finished difference Result 220 states and 319 transitions. [2021-07-09 21:40:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:40:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-07-09 21:40:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 21:40:56,511 INFO L225 Difference]: With dead ends: 220 [2021-07-09 21:40:56,511 INFO L226 Difference]: Without dead ends: 196 [2021-07-09 21:40:56,513 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-09 21:40:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-07-09 21:40:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-07-09 21:40:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.5026178010471205) internal successors, (287), 195 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2021-07-09 21:40:56,516 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 48 [2021-07-09 21:40:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 21:40:56,516 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2021-07-09 21:40:56,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:40:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2021-07-09 21:40:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-07-09 21:40:56,518 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 21:40:56,518 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 21:40:56,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 21:40:56,519 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 21:40:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:40:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1180290698, now seen corresponding path program 1 times [2021-07-09 21:40:56,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:40:56,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76838277] [2021-07-09 21:40:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:40:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-09 21:40:56,573 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-09 21:40:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-09 21:40:56,602 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-09 21:40:56,624 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-09 21:40:56,625 INFO L609 BasicCegarLoop]: Counterexample might be feasible [2021-07-09 21:40:56,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 21:40:56,625 INFO L301 ceAbstractionStarter]: Result for error location thread3Thread1of1ForFork0 was UNSAFE (2/2) [2021-07-09 21:40:56,626 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 21:40:56,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 09:40:56 BasicIcfg [2021-07-09 21:40:56,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 21:40:56,675 INFO L168 Benchmark]: Toolchain (without parser) took 2149.19 ms. Allocated memory was 197.1 MB in the beginning and 252.7 MB in the end (delta: 55.6 MB). Free memory was 159.8 MB in the beginning and 216.5 MB in the end (delta: -56.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:40:56,676 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 197.1 MB. Free memory is still 177.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:40:56,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.35 ms. Allocated memory is still 197.1 MB. Free memory was 159.6 MB in the beginning and 169.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-07-09 21:40:56,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.44 ms. Allocated memory is still 197.1 MB. Free memory was 169.9 MB in the beginning and 167.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 21:40:56,677 INFO L168 Benchmark]: Boogie Preprocessor took 14.75 ms. Allocated memory is still 197.1 MB. Free memory was 167.8 MB in the beginning and 166.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 21:40:56,677 INFO L168 Benchmark]: RCFGBuilder took 334.65 ms. Allocated memory is still 197.1 MB. Free memory was 166.3 MB in the beginning and 141.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-09 21:40:56,678 INFO L168 Benchmark]: TraceAbstraction took 1337.77 ms. Allocated memory was 197.1 MB in the beginning and 252.7 MB in the end (delta: 55.6 MB). Free memory was 141.1 MB in the beginning and 216.5 MB in the end (delta: -75.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:40:56,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 197.1 MB. Free memory is still 177.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.35 ms. Allocated memory is still 197.1 MB. Free memory was 159.6 MB in the beginning and 169.9 MB in the end (delta: -10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.44 ms. Allocated memory is still 197.1 MB. Free memory was 169.9 MB in the beginning and 167.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.75 ms. Allocated memory is still 197.1 MB. Free memory was 167.8 MB in the beginning and 166.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 334.65 ms. Allocated memory is still 197.1 MB. Free memory was 166.3 MB in the beginning and 141.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1337.77 ms. Allocated memory was 197.1 MB in the beginning and 252.7 MB in the end (delta: 55.6 MB). Free memory was 141.1 MB in the beginning and 216.5 MB in the end (delta: -75.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 912, positive: 888, positive conditional: 888, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 912, positive: 888, positive conditional: 0, positive unconditional: 888, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 197, positive: 193, positive conditional: 0, positive unconditional: 193, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 197, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 912, positive: 695, positive conditional: 0, positive unconditional: 695, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 197, unknown conditional: 0, unknown unconditional: 197] , Statistics on independence cache: Total cache size (in pairs): 197, Positive cache size: 193, Positive conditional cache size: 0, Positive unconditional cache size: 193, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Independence queries for same thread: 0 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7458, positive: 7350, positive conditional: 7350, positive unconditional: 0, negative: 108, negative conditional: 108, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7458, positive: 7350, positive conditional: 0, positive unconditional: 7350, negative: 108, negative conditional: 0, negative unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 551, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 551, positive: 534, positive conditional: 0, positive unconditional: 534, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 45, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7458, positive: 6811, positive conditional: 0, positive unconditional: 6811, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 551, unknown conditional: 0, unknown unconditional: 551] , Statistics on independence cache: Total cache size (in pairs): 551, Positive cache size: 539, Positive conditional cache size: 0, Positive unconditional cache size: 539, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Independence queries for same thread: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; VAL [mutex={7:0}] [L703] 0 int data = 0; VAL [data=0, mutex={7:0}] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={7:0}] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={7:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={7:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={7:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 118 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 163.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 20.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 140.2ms, PartialOrderReductionTime: 127.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thread3Thread1of1ForFork0 with 1 thread instances CFG has 7 procedures, 118 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1032.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 166.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 212.9ms, PartialOrderReductionTime: 210.6ms, HoareTripleCheckerStatistics: 274 SDtfs, 109 SDslu, 293 SDs, 0 SdLazy, 39 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2826occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 86.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.2ms SsaConstructionTime, 107.4ms SatisfiabilityAnalysisTime, 279.3ms InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! Received shutdown request...