/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 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 14:44:49,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 14:44:49,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 14:44:49,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 14:44:49,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 14:44:49,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 14:44:49,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 14:44:49,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 14:44:49,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 14:44:49,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 14:44:49,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 14:44:49,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 14:44:49,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 14:44:49,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 14:44:49,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 14:44:49,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 14:44:49,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 14:44:49,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 14:44:49,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 14:44:49,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 14:44:49,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 14:44:49,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 14:44:49,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 14:44:49,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 14:44:49,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 14:44:49,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 14:44:49,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 14:44:49,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 14:44:49,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 14:44:49,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 14:44:49,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 14:44:49,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 14:44:49,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 14:44:49,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 14:44:49,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 14:44:49,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 14:44:49,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 14:44:49,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 14:44:49,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 14:44:49,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 14:44:49,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 14:44:49,904 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 [2021-06-16 14:44:49,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 14:44:49,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 14:44:49,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 14:44:49,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 14:44:49,943 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 14:44:49,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 14:44:49,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 14:44:49,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 14:44:49,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 14:44:49,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 14:44:49,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 14:44:49,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 14:44:49,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 14:44:49,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 14:44:49,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 14:44:49,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 14:44:49,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 14:44:49,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 14:44:49,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 14:44:49,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 14:44:49,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 14:44:49,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 14:44:49,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 14:44:49,946 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 14:44:49,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 14:44:50,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 14:44:50,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 14:44:50,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 14:44:50,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 14:44:50,420 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 14:44:50,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-06-16 14:44:50,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512acaeb5/744722bb277c4b49b962eb64c27ccb57/FLAG8e263c562 [2021-06-16 14:44:50,957 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 14:44:50,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-06-16 14:44:50,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512acaeb5/744722bb277c4b49b962eb64c27ccb57/FLAG8e263c562 [2021-06-16 14:44:51,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512acaeb5/744722bb277c4b49b962eb64c27ccb57 [2021-06-16 14:44:51,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 14:44:51,307 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 14:44:51,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 14:44:51,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 14:44:51,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 14:44:51,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecbee8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51, skipping insertion in model container [2021-06-16 14:44:51,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 14:44:51,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 14:44:51,599 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] [2021-06-16 14:44:51,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 14:44:51,615 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 14:44:51,647 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] [2021-06-16 14:44:51,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 14:44:51,686 INFO L208 MainTranslator]: Completed translation [2021-06-16 14:44:51,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51 WrapperNode [2021-06-16 14:44:51,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 14:44:51,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 14:44:51,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 14:44:51,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 14:44:51,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 14:44:51,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 14:44:51,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 14:44:51,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 14:44:51,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (1/1) ... [2021-06-16 14:44:51,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 14:44:51,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 14:44:51,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 14:44:51,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 14:44:51,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (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 [2021-06-16 14:44:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-16 14:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 14:44:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 14:44:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 14:44:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 14:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-16 14:44:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-16 14:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 14:44:52,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-16 14:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 14:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 14:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 14:44:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 14:44:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 14:44:52,075 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 14:44:52,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 14:44:52,755 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-16 14:44:52,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 02:44:52 BoogieIcfgContainer [2021-06-16 14:44:52,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 14:44:52,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 14:44:52,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 14:44:52,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 14:44:52,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 02:44:51" (1/3) ... [2021-06-16 14:44:52,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af75cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 02:44:52, skipping insertion in model container [2021-06-16 14:44:52,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 02:44:51" (2/3) ... [2021-06-16 14:44:52,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af75cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 02:44:52, skipping insertion in model container [2021-06-16 14:44:52,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 02:44:52" (3/3) ... [2021-06-16 14:44:52,790 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-06-16 14:44:52,794 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 14:44:52,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 14:44:52,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 14:44:52,795 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 14:44:52,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,819 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,819 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,820 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,822 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,823 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,824 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,825 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,825 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,825 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,826 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,826 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,826 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,826 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,827 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,827 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,828 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,828 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,828 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,833 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,833 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,834 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,834 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,834 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,834 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,836 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,836 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,836 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 14:44:52,855 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-06-16 14:44:52,909 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-16 14:44:52,942 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:44:52,942 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:44:52,942 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:44:52,942 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:44:52,942 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:44:52,942 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:44:52,942 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:44:52,942 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread3======== [2021-06-16 14:44:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 5016 states, 4168 states have (on average 1.5595009596928984) internal successors, (6500), 5015 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:53,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:44:53,320 INFO L301 ceAbstractionStarter]: Result for error location thread3 was SAFE (1/3) [2021-06-16 14:44:53,321 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-16 14:44:53,327 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:44:53,327 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:44:53,327 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:44:53,328 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:44:53,328 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:44:53,328 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:44:53,328 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:44:53,328 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 14:44:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 5016 states, 4168 states have (on average 1.5595009596928984) internal successors, (6500), 5015 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:53,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 14:44:53,546 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/3) [2021-06-16 14:44:53,547 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-16 14:44:53,550 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 14:44:53,550 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 14:44:53,552 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 14:44:53,552 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 14:44:53,553 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 14:44:53,553 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 14:44:53,556 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 14:44:53,557 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread3Thread1of1ForFork0======== [2021-06-16 14:44:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 5016 states, 4168 states have (on average 1.5595009596928984) internal successors, (6500), 5015 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-06-16 14:44:53,748 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:44:53,748 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:44:53,749 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:44:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:44:53,753 INFO L82 PathProgramCache]: Analyzing trace with hash 842405542, now seen corresponding path program 1 times [2021-06-16 14:44:53,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:44:53,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116586450] [2021-06-16 14:44:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:44:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:44:53,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:53,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:53,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:53,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:44:53,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:53,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:44:53,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:44:53,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116586450] [2021-06-16 14:44:53,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116586450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:44:53,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:44:53,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 14:44:53,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311788024] [2021-06-16 14:44:53,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 14:44:53,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:44:53,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 14:44:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:44:53,978 INFO L87 Difference]: Start difference. First operand has 5016 states, 4168 states have (on average 1.5595009596928984) internal successors, (6500), 5015 states have internal predecessors, (6500), 0 states have call successors, (0), 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) [2021-06-16 14:44:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:44:54,037 INFO L93 Difference]: Finished difference Result 4479 states and 5626 transitions. [2021-06-16 14:44:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 14:44:54,039 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 [2021-06-16 14:44:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:44:54,056 INFO L225 Difference]: With dead ends: 4479 [2021-06-16 14:44:54,056 INFO L226 Difference]: Without dead ends: 1666 [2021-06-16 14:44:54,057 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:44:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2021-06-16 14:44:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2021-06-16 14:44:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1426 states have (on average 1.5448807854137447) internal successors, (2203), 1665 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2203 transitions. [2021-06-16 14:44:54,152 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2203 transitions. Word has length 41 [2021-06-16 14:44:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:44:54,152 INFO L482 AbstractCegarLoop]: Abstraction has 1666 states and 2203 transitions. [2021-06-16 14:44:54,152 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) [2021-06-16 14:44:54,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2203 transitions. [2021-06-16 14:44:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-06-16 14:44:54,154 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:44:54,155 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:44:54,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 14:44:54,155 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:44:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:44:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash 772951848, now seen corresponding path program 1 times [2021-06-16 14:44:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:44:54,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916618890] [2021-06-16 14:44:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:44:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:44:54,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:54,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 14:44:54,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:44:54,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:44:54,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916618890] [2021-06-16 14:44:54,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916618890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:44:54,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:44:54,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 14:44:54,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019018449] [2021-06-16 14:44:54,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 14:44:54,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:44:54,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 14:44:54,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:44:54,241 INFO L87 Difference]: Start difference. First operand 1666 states and 2203 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) [2021-06-16 14:44:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:44:54,278 INFO L93 Difference]: Finished difference Result 931 states and 1082 transitions. [2021-06-16 14:44:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 14:44:54,278 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 [2021-06-16 14:44:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:44:54,280 INFO L225 Difference]: With dead ends: 931 [2021-06-16 14:44:54,280 INFO L226 Difference]: Without dead ends: 646 [2021-06-16 14:44:54,281 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 14:44:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-06-16 14:44:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2021-06-16 14:44:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 562 states have (on average 1.4181494661921707) internal successors, (797), 645 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 797 transitions. [2021-06-16 14:44:54,291 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 797 transitions. Word has length 45 [2021-06-16 14:44:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:44:54,291 INFO L482 AbstractCegarLoop]: Abstraction has 646 states and 797 transitions. [2021-06-16 14:44:54,291 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) [2021-06-16 14:44:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 797 transitions. [2021-06-16 14:44:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-06-16 14:44:54,293 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:44:54,293 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:44:54,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 14:44:54,294 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:44:54,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:44:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1893354144, now seen corresponding path program 1 times [2021-06-16 14:44:54,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:44:54,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11168735] [2021-06-16 14:44:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:44:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:44:54,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:54,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:44:54,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:44:54,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:44:54,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:44:54,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11168735] [2021-06-16 14:44:54,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11168735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:44:54,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:44:54,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-16 14:44:54,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837495867] [2021-06-16 14:44:54,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-16 14:44:54,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:44:54,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-16 14:44:54,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:44:54,359 INFO L87 Difference]: Start difference. First operand 646 states and 797 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) [2021-06-16 14:44:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:44:54,375 INFO L93 Difference]: Finished difference Result 592 states and 743 transitions. [2021-06-16 14:44:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-16 14:44:54,376 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 [2021-06-16 14:44:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:44:54,378 INFO L225 Difference]: With dead ends: 592 [2021-06-16 14:44:54,378 INFO L226 Difference]: Without dead ends: 481 [2021-06-16 14:44:54,379 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-16 14:44:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-06-16 14:44:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2021-06-16 14:44:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 421 states have (on average 1.4631828978622328) internal successors, (616), 480 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 616 transitions. [2021-06-16 14:44:54,387 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 616 transitions. Word has length 46 [2021-06-16 14:44:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:44:54,388 INFO L482 AbstractCegarLoop]: Abstraction has 481 states and 616 transitions. [2021-06-16 14:44:54,388 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) [2021-06-16 14:44:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 616 transitions. [2021-06-16 14:44:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 14:44:54,389 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:44:54,389 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:44:54,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 14:44:54,389 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:44:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:44:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash 933182114, now seen corresponding path program 1 times [2021-06-16 14:44:54,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:44:54,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041652413] [2021-06-16 14:44:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:44:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 14:44:54,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:54,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:44:54,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:44:54,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 14:44:54,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 14:44:54,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 14:44:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 14:44:54,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 14:44:54,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041652413] [2021-06-16 14:44:54,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041652413] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 14:44:54,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 14:44:54,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-16 14:44:54,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300753844] [2021-06-16 14:44:54,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-16 14:44:54,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 14:44:54,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-16 14:44:54,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-16 14:44:54,458 INFO L87 Difference]: Start difference. First operand 481 states and 616 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) [2021-06-16 14:44:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 14:44:54,484 INFO L93 Difference]: Finished difference Result 427 states and 546 transitions. [2021-06-16 14:44:54,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-16 14:44:54,485 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 [2021-06-16 14:44:54,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 14:44:54,486 INFO L225 Difference]: With dead ends: 427 [2021-06-16 14:44:54,486 INFO L226 Difference]: Without dead ends: 331 [2021-06-16 14:44:54,487 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-16 14:44:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-06-16 14:44:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-06-16 14:44:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 295 states have (on average 1.471186440677966) internal successors, (434), 330 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 14:44:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 434 transitions. [2021-06-16 14:44:54,491 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 434 transitions. Word has length 48 [2021-06-16 14:44:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 14:44:54,492 INFO L482 AbstractCegarLoop]: Abstraction has 331 states and 434 transitions. [2021-06-16 14:44:54,492 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) [2021-06-16 14:44:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 434 transitions. [2021-06-16 14:44:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 14:44:54,492 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 14:44:54,492 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 14:44:54,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 14:44:54,493 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 14:44:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 14:44:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1180290698, now seen corresponding path program 1 times [2021-06-16 14:44:54,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 14:44:54,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154777551] [2021-06-16 14:44:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 14:44:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-16 14:44:54,521 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-16 14:44:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-16 14:44:54,536 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-16 14:44:54,568 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-16 14:44:54,568 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-16 14:44:54,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 14:44:54,568 INFO L301 ceAbstractionStarter]: Result for error location thread3Thread1of1ForFork0 was UNSAFE (3/3) [2021-06-16 14:44:54,569 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 14:44:54,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 02:44:54 BasicIcfg [2021-06-16 14:44:54,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 14:44:54,619 INFO L168 Benchmark]: Toolchain (without parser) took 3312.11 ms. Allocated memory was 198.2 MB in the beginning and 256.9 MB in the end (delta: 58.7 MB). Free memory was 160.4 MB in the beginning and 96.7 MB in the end (delta: 63.6 MB). Peak memory consumption was 122.9 MB. Max. memory is 8.0 GB. [2021-06-16 14:44:54,619 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 198.2 MB. Free memory is still 178.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 14:44:54,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.46 ms. Allocated memory is still 198.2 MB. Free memory was 160.2 MB in the beginning and 160.2 MB in the end (delta: 53.1 kB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-06-16 14:44:54,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.15 ms. Allocated memory is still 198.2 MB. Free memory was 160.2 MB in the beginning and 158.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 14:44:54,620 INFO L168 Benchmark]: Boogie Preprocessor took 14.03 ms. Allocated memory is still 198.2 MB. Free memory was 158.5 MB in the beginning and 157.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 14:44:54,621 INFO L168 Benchmark]: RCFGBuilder took 1029.23 ms. Allocated memory is still 198.2 MB. Free memory was 157.0 MB in the beginning and 132.4 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-06-16 14:44:54,621 INFO L168 Benchmark]: TraceAbstraction took 1860.43 ms. Allocated memory was 198.2 MB in the beginning and 256.9 MB in the end (delta: 58.7 MB). Free memory was 131.9 MB in the beginning and 96.7 MB in the end (delta: 35.1 MB). Peak memory consumption was 94.9 MB. Max. memory is 8.0 GB. [2021-06-16 14:44:54,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 198.2 MB. Free memory is still 178.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.46 ms. Allocated memory is still 198.2 MB. Free memory was 160.2 MB in the beginning and 160.2 MB in the end (delta: 53.1 kB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.15 ms. Allocated memory is still 198.2 MB. Free memory was 160.2 MB in the beginning and 158.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.03 ms. Allocated memory is still 198.2 MB. Free memory was 158.5 MB in the beginning and 157.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1029.23 ms. Allocated memory is still 198.2 MB. Free memory was 157.0 MB in the beginning and 132.4 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1860.43 ms. Allocated memory was 198.2 MB in the beginning and 256.9 MB in the end (delta: 58.7 MB). Free memory was 131.9 MB in the beginning and 96.7 MB in the end (delta: 35.1 MB). Peak memory consumption was 94.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14045, positive: 13070, positive conditional: 13070, positive unconditional: 0, negative: 975, negative conditional: 975, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13405, positive: 13070, positive conditional: 0, positive unconditional: 13070, negative: 335, negative conditional: 0, negative unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 818, positive: 800, positive conditional: 0, positive unconditional: 800, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 818, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13405, positive: 12270, positive conditional: 0, positive unconditional: 12270, negative: 317, negative conditional: 0, negative unconditional: 317, unknown: 818, unknown conditional: 0, unknown unconditional: 818] , Statistics on independence cache: Total cache size (in pairs): 818, Positive cache size: 800, Positive conditional cache size: 0, Positive unconditional cache size: 800, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Independence queries for same thread: 640 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14045, positive: 13070, positive conditional: 13070, positive unconditional: 0, negative: 975, negative conditional: 975, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13405, positive: 13070, positive conditional: 0, positive unconditional: 13070, negative: 335, negative conditional: 0, negative unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 818, positive: 800, positive conditional: 0, positive unconditional: 800, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 818, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13405, positive: 12270, positive conditional: 0, positive unconditional: 12270, negative: 317, negative conditional: 0, negative unconditional: 317, unknown: 818, unknown conditional: 0, unknown unconditional: 818] , Statistics on independence cache: Total cache size (in pairs): 818, Positive cache size: 800, Positive conditional cache size: 0, Positive unconditional cache size: 800, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Independence queries for same thread: 640 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14045, positive: 13070, positive conditional: 13070, positive unconditional: 0, negative: 975, negative conditional: 975, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13405, positive: 13070, positive conditional: 0, positive unconditional: 13070, negative: 335, negative conditional: 0, negative unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 818, positive: 800, positive conditional: 0, positive unconditional: 800, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 818, positive: 792, positive conditional: 0, positive unconditional: 792, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 36, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13405, positive: 12270, positive conditional: 0, positive unconditional: 12270, negative: 317, negative conditional: 0, negative unconditional: 317, unknown: 818, unknown conditional: 0, unknown unconditional: 818] , Statistics on independence cache: Total cache size (in pairs): 818, Positive cache size: 800, Positive conditional cache size: 0, Positive unconditional cache size: 800, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Independence queries for same thread: 640 - 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: thread3 with 1 thread instances CFG has 7 procedures, 118 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 378.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 40.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 335.5ms, PartialOrderReductionTime: 319.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5016occurred 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: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 118 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 218.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 17.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 200.7ms, PartialOrderReductionTime: 195.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5016occurred 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: 1018.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 12.5ms, AutomataDifference: 188.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 183.2ms, PartialOrderReductionTime: 178.2ms, HoareTripleCheckerStatistics: 294 SDtfs, 118 SDslu, 344 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5016occurred 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: 108.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.4ms SsaConstructionTime, 118.8ms SatisfiabilityAnalysisTime, 212.9ms 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...