/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 14:53:43,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 14:53:43,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 14:53:43,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 14:53:43,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 14:53:43,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 14:53:43,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 14:53:43,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 14:53:43,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 14:53:43,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 14:53:43,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 14:53:43,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 14:53:43,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 14:53:43,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 14:53:43,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 14:53:43,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 14:53:43,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 14:53:43,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 14:53:43,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 14:53:43,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 14:53:43,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 14:53:43,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 14:53:43,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 14:53:43,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 14:53:43,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 14:53:43,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 14:53:43,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 14:53:43,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 14:53:43,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 14:53:43,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 14:53:43,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 14:53:43,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 14:53:43,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 14:53:43,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 14:53:43,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 14:53:43,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 14:53:43,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 14:53:43,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 14:53:43,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 14:53:43,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 14:53:43,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 14:53:43,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2019-12-27 14:53:43,799 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 14:53:43,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 14:53:43,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 14:53:43,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 14:53:43,803 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 14:53:43,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 14:53:43,803 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 14:53:43,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 14:53:43,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 14:53:43,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 14:53:43,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 14:53:43,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 14:53:43,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 14:53:43,805 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 14:53:43,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 14:53:43,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 14:53:43,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 14:53:43,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 14:53:43,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 14:53:43,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 14:53:43,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 14:53:43,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 14:53:43,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 14:53:43,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 14:53:43,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 14:53:43,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 14:53:43,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 14:53:43,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-27 14:53:43,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 14:53:43,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 14:53:44,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 14:53:44,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 14:53:44,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 14:53:44,097 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 14:53:44,098 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 14:53:44,098 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 14:53:44,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409d2bbde/e3377e42b4744393a16438ad1172c72d/FLAGd190079e8 [2019-12-27 14:53:44,737 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 14:53:44,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 14:53:44,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409d2bbde/e3377e42b4744393a16438ad1172c72d/FLAGd190079e8 [2019-12-27 14:53:44,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409d2bbde/e3377e42b4744393a16438ad1172c72d [2019-12-27 14:53:44,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 14:53:44,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 14:53:44,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 14:53:44,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 14:53:44,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 14:53:44,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 02:53:44" (1/1) ... [2019-12-27 14:53:44,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6294424c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:44, skipping insertion in model container [2019-12-27 14:53:44,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 02:53:44" (1/1) ... [2019-12-27 14:53:45,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 14:53:45,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 14:53:45,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 14:53:45,806 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 14:53:45,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 14:53:46,088 INFO L208 MainTranslator]: Completed translation [2019-12-27 14:53:46,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46 WrapperNode [2019-12-27 14:53:46,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 14:53:46,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 14:53:46,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 14:53:46,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 14:53:46,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 14:53:46,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 14:53:46,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 14:53:46,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 14:53:46,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (1/1) ... [2019-12-27 14:53:46,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 14:53:46,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 14:53:46,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 14:53:46,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 14:53:46,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (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 [2019-12-27 14:53:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 14:53:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 14:53:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 14:53:46,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2019-12-27 14:53:46,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2019-12-27 14:53:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 14:53:46,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 14:53:46,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 14:53:46,260 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 14:53:46,695 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 14:53:46,695 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 14:53:46,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 02:53:46 BoogieIcfgContainer [2019-12-27 14:53:46,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 14:53:46,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 14:53:46,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 14:53:46,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 14:53:46,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 02:53:44" (1/3) ... [2019-12-27 14:53:46,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4788993a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 02:53:46, skipping insertion in model container [2019-12-27 14:53:46,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:46" (2/3) ... [2019-12-27 14:53:46,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4788993a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 02:53:46, skipping insertion in model container [2019-12-27 14:53:46,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 02:53:46" (3/3) ... [2019-12-27 14:53:46,710 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2019-12-27 14:53:46,724 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 14:53:46,726 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 14:53:46,733 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 14:53:46,734 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 14:53:46,756 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,757 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,757 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,757 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,757 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,757 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,759 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,759 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,759 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,761 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,761 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,761 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,762 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,762 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,762 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,762 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,763 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,763 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,763 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,764 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,764 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,771 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,771 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,771 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,772 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,772 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,772 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,772 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,772 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,794 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 14:53:46,810 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 14:53:46,810 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 14:53:46,811 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 14:53:46,811 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 14:53:46,811 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 14:53:46,811 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 14:53:46,811 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 14:53:46,811 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 14:53:46,823 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 85 transitions [2019-12-27 14:53:46,848 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 316 states. [2019-12-27 14:53:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2019-12-27 14:53:46,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-27 14:53:46,876 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:46,877 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:46,878 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:46,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1364798605, now seen corresponding path program 1 times [2019-12-27 14:53:46,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:46,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195291749] [2019-12-27 14:53:46,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195291749] [2019-12-27 14:53:47,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:53:47,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 14:53:47,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725685643] [2019-12-27 14:53:47,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 14:53:47,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:47,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 14:53:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 14:53:47,160 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 2 states. [2019-12-27 14:53:47,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:47,208 INFO L93 Difference]: Finished difference Result 309 states and 579 transitions. [2019-12-27 14:53:47,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 14:53:47,210 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 54 [2019-12-27 14:53:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:47,230 INFO L225 Difference]: With dead ends: 309 [2019-12-27 14:53:47,230 INFO L226 Difference]: Without dead ends: 276 [2019-12-27 14:53:47,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 14:53:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-12-27 14:53:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2019-12-27 14:53:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-12-27 14:53:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 516 transitions. [2019-12-27 14:53:47,288 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 516 transitions. Word has length 54 [2019-12-27 14:53:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:47,290 INFO L462 AbstractCegarLoop]: Abstraction has 276 states and 516 transitions. [2019-12-27 14:53:47,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 14:53:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 516 transitions. [2019-12-27 14:53:47,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-27 14:53:47,292 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:47,293 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:47,293 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash 839814325, now seen corresponding path program 1 times [2019-12-27 14:53:47,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:47,294 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56402068] [2019-12-27 14:53:47,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56402068] [2019-12-27 14:53:47,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:53:47,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 14:53:47,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453024905] [2019-12-27 14:53:47,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 14:53:47,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:47,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 14:53:47,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 14:53:47,429 INFO L87 Difference]: Start difference. First operand 276 states and 516 transitions. Second operand 3 states. [2019-12-27 14:53:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:47,458 INFO L93 Difference]: Finished difference Result 336 states and 636 transitions. [2019-12-27 14:53:47,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 14:53:47,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-12-27 14:53:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:47,462 INFO L225 Difference]: With dead ends: 336 [2019-12-27 14:53:47,462 INFO L226 Difference]: Without dead ends: 336 [2019-12-27 14:53:47,464 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 14:53:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-12-27 14:53:47,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 291. [2019-12-27 14:53:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-12-27 14:53:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 546 transitions. [2019-12-27 14:53:47,500 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 546 transitions. Word has length 54 [2019-12-27 14:53:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:47,500 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 546 transitions. [2019-12-27 14:53:47,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 14:53:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 546 transitions. [2019-12-27 14:53:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-12-27 14:53:47,506 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:47,506 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:47,507 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:47,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1623937585, now seen corresponding path program 1 times [2019-12-27 14:53:47,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:47,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768560729] [2019-12-27 14:53:47,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768560729] [2019-12-27 14:53:47,703 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78689096] [2019-12-27 14:53:47,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-27 14:53:47,822 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 14:53:47,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 14:53:47,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-12-27 14:53:47,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690457577] [2019-12-27 14:53:47,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 14:53:47,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:47,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 14:53:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-27 14:53:47,895 INFO L87 Difference]: Start difference. First operand 291 states and 546 transitions. Second operand 3 states. [2019-12-27 14:53:47,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:47,924 INFO L93 Difference]: Finished difference Result 410 states and 784 transitions. [2019-12-27 14:53:47,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 14:53:47,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-12-27 14:53:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:47,928 INFO L225 Difference]: With dead ends: 410 [2019-12-27 14:53:47,928 INFO L226 Difference]: Without dead ends: 410 [2019-12-27 14:53:47,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-27 14:53:47,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2019-12-27 14:53:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 308. [2019-12-27 14:53:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-12-27 14:53:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 580 transitions. [2019-12-27 14:53:47,948 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 580 transitions. Word has length 59 [2019-12-27 14:53:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:47,949 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 580 transitions. [2019-12-27 14:53:47,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 14:53:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 580 transitions. [2019-12-27 14:53:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-12-27 14:53:47,951 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:47,952 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:48,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:48,157 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1987360426, now seen corresponding path program 1 times [2019-12-27 14:53:48,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:48,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881025892] [2019-12-27 14:53:48,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:48,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881025892] [2019-12-27 14:53:48,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227836316] [2019-12-27 14:53:48,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:48,405 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 14:53:48,408 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 14:53:48,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:48,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-27 14:53:48,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519363972] [2019-12-27 14:53:48,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 14:53:48,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:48,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 14:53:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-27 14:53:48,457 INFO L87 Difference]: Start difference. First operand 308 states and 580 transitions. Second operand 8 states. [2019-12-27 14:53:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:48,955 INFO L93 Difference]: Finished difference Result 786 states and 1536 transitions. [2019-12-27 14:53:48,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-27 14:53:48,956 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2019-12-27 14:53:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:48,962 INFO L225 Difference]: With dead ends: 786 [2019-12-27 14:53:48,962 INFO L226 Difference]: Without dead ends: 786 [2019-12-27 14:53:48,964 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2019-12-27 14:53:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2019-12-27 14:53:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 564. [2019-12-27 14:53:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-12-27 14:53:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1092 transitions. [2019-12-27 14:53:48,990 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1092 transitions. Word has length 67 [2019-12-27 14:53:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:48,993 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 1092 transitions. [2019-12-27 14:53:48,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 14:53:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1092 transitions. [2019-12-27 14:53:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-12-27 14:53:48,999 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:49,000 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:49,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:49,213 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:49,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:49,214 INFO L82 PathProgramCache]: Analyzing trace with hash -618928129, now seen corresponding path program 2 times [2019-12-27 14:53:49,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:49,214 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112138772] [2019-12-27 14:53:49,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:49,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112138772] [2019-12-27 14:53:49,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002342900] [2019-12-27 14:53:49,751 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:49,835 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 14:53:49,835 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:53:49,837 INFO L264 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 14:53:49,841 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-27 14:53:49,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:49,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7] total 30 [2019-12-27 14:53:49,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660021401] [2019-12-27 14:53:49,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-12-27 14:53:49,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:49,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-12-27 14:53:49,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2019-12-27 14:53:49,984 INFO L87 Difference]: Start difference. First operand 564 states and 1092 transitions. Second operand 30 states. [2019-12-27 14:54:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:03,773 INFO L93 Difference]: Finished difference Result 2699 states and 5350 transitions. [2019-12-27 14:54:03,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 328 states. [2019-12-27 14:54:03,774 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 80 [2019-12-27 14:54:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:03,794 INFO L225 Difference]: With dead ends: 2699 [2019-12-27 14:54:03,795 INFO L226 Difference]: Without dead ends: 2699 [2019-12-27 14:54:03,845 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56657 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=17463, Invalid=102599, Unknown=0, NotChecked=0, Total=120062 [2019-12-27 14:54:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2019-12-27 14:54:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 740. [2019-12-27 14:54:03,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2019-12-27 14:54:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1444 transitions. [2019-12-27 14:54:03,909 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1444 transitions. Word has length 80 [2019-12-27 14:54:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:03,912 INFO L462 AbstractCegarLoop]: Abstraction has 740 states and 1444 transitions. [2019-12-27 14:54:03,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-12-27 14:54:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1444 transitions. [2019-12-27 14:54:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-12-27 14:54:03,915 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:03,915 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:04,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:04,120 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:04,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1310164484, now seen corresponding path program 3 times [2019-12-27 14:54:04,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:04,122 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110782544] [2019-12-27 14:54:04,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:04,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110782544] [2019-12-27 14:54:04,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380487713] [2019-12-27 14:54:04,619 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:04,705 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-27 14:54:04,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:54:04,707 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 14:54:04,710 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-12-27 14:54:04,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:04,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 7] total 35 [2019-12-27 14:54:04,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782971384] [2019-12-27 14:54:04,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-27 14:54:04,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:04,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-27 14:54:04,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2019-12-27 14:54:04,842 INFO L87 Difference]: Start difference. First operand 740 states and 1444 transitions. Second operand 35 states. [2019-12-27 14:54:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:36,881 INFO L93 Difference]: Finished difference Result 5721 states and 11449 transitions. [2019-12-27 14:54:36,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 618 states. [2019-12-27 14:54:36,882 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 88 [2019-12-27 14:54:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:36,914 INFO L225 Difference]: With dead ends: 5721 [2019-12-27 14:54:36,914 INFO L226 Difference]: Without dead ends: 5709 [2019-12-27 14:54:36,943 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 632 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207878 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=60910, Invalid=340412, Unknown=0, NotChecked=0, Total=401322 [2019-12-27 14:54:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2019-12-27 14:54:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 1183. [2019-12-27 14:54:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2019-12-27 14:54:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 2341 transitions. [2019-12-27 14:54:37,014 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 2341 transitions. Word has length 88 [2019-12-27 14:54:37,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:37,014 INFO L462 AbstractCegarLoop]: Abstraction has 1183 states and 2341 transitions. [2019-12-27 14:54:37,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-27 14:54:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 2341 transitions. [2019-12-27 14:54:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-12-27 14:54:37,019 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:37,019 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:37,219 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:37,220 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:37,220 INFO L82 PathProgramCache]: Analyzing trace with hash 900607456, now seen corresponding path program 4 times [2019-12-27 14:54:37,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:37,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931790985] [2019-12-27 14:54:37,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:37,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931790985] [2019-12-27 14:54:37,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5662597] [2019-12-27 14:54:37,837 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:37,924 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 14:54:37,924 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:54:37,926 INFO L264 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 14:54:37,938 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-12-27 14:54:38,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:38,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9] total 40 [2019-12-27 14:54:38,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254503121] [2019-12-27 14:54:38,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-27 14:54:38,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:38,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-27 14:54:38,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1385, Unknown=0, NotChecked=0, Total=1560 [2019-12-27 14:54:38,183 INFO L87 Difference]: Start difference. First operand 1183 states and 2341 transitions. Second operand 40 states. [2019-12-27 14:55:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:55:21,825 INFO L93 Difference]: Finished difference Result 6186 states and 12304 transitions. [2019-12-27 14:55:21,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 828 states. [2019-12-27 14:55:21,826 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2019-12-27 14:55:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:55:21,855 INFO L225 Difference]: With dead ends: 6186 [2019-12-27 14:55:21,855 INFO L226 Difference]: Without dead ends: 6186 [2019-12-27 14:55:21,887 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 853 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379760 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=96453, Invalid=633717, Unknown=0, NotChecked=0, Total=730170 [2019-12-27 14:55:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2019-12-27 14:55:21,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 1116. [2019-12-27 14:55:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2019-12-27 14:55:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 2196 transitions. [2019-12-27 14:55:21,946 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 2196 transitions. Word has length 93 [2019-12-27 14:55:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:55:21,947 INFO L462 AbstractCegarLoop]: Abstraction has 1116 states and 2196 transitions. [2019-12-27 14:55:21,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-27 14:55:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 2196 transitions. [2019-12-27 14:55:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-12-27 14:55:21,954 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:55:21,954 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:55:22,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:55:22,158 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:55:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:55:22,158 INFO L82 PathProgramCache]: Analyzing trace with hash -27770885, now seen corresponding path program 5 times [2019-12-27 14:55:22,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:55:22,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003271874] [2019-12-27 14:55:22,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:55:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:55:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:55:23,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003271874] [2019-12-27 14:55:23,078 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964575649] [2019-12-27 14:55:23,078 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:55:23,137 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-27 14:55:23,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:55:23,139 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 14:55:23,145 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:55:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-12-27 14:55:23,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:55:23,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 9] total 45 [2019-12-27 14:55:23,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315962799] [2019-12-27 14:55:23,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-12-27 14:55:23,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:55:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-12-27 14:55:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1770, Unknown=0, NotChecked=0, Total=1980 [2019-12-27 14:55:23,307 INFO L87 Difference]: Start difference. First operand 1116 states and 2196 transitions. Second operand 45 states. [2019-12-27 14:56:15,782 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-12-27 14:57:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:57:12,925 INFO L93 Difference]: Finished difference Result 13210 states and 26653 transitions. [2019-12-27 14:57:12,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1540 states. [2019-12-27 14:57:12,927 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 101 [2019-12-27 14:57:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:57:12,968 INFO L225 Difference]: With dead ends: 13210 [2019-12-27 14:57:12,968 INFO L226 Difference]: Without dead ends: 13186 [2019-12-27 14:57:13,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2755 GetRequests, 1177 SyntacticMatches, 20 SemanticMatches, 1558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355381 ImplicationChecksByTransitivity, 102.7s TimeCoverageRelationStatistics Valid=333038, Invalid=2099002, Unknown=0, NotChecked=0, Total=2432040 [2019-12-27 14:57:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13186 states. [2019-12-27 14:57:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13186 to 1850. [2019-12-27 14:57:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2019-12-27 14:57:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 3686 transitions. [2019-12-27 14:57:13,211 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 3686 transitions. Word has length 101 [2019-12-27 14:57:13,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:57:13,212 INFO L462 AbstractCegarLoop]: Abstraction has 1850 states and 3686 transitions. [2019-12-27 14:57:13,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-12-27 14:57:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 3686 transitions. [2019-12-27 14:57:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-27 14:57:13,217 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:57:13,217 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:57:13,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:57:13,422 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:57:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:57:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash 58070601, now seen corresponding path program 6 times [2019-12-27 14:57:13,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:57:13,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303572695] [2019-12-27 14:57:13,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:57:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:57:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:57:14,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303572695] [2019-12-27 14:57:14,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245520514] [2019-12-27 14:57:14,037 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:57:14,124 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-12-27 14:57:14,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:57:14,125 INFO L264 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 14:57:14,127 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:57:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-12-27 14:57:14,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:57:14,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 11] total 50 [2019-12-27 14:57:14,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296874431] [2019-12-27 14:57:14,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-27 14:57:14,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:57:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-27 14:57:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2192, Unknown=0, NotChecked=0, Total=2450 [2019-12-27 14:57:14,372 INFO L87 Difference]: Start difference. First operand 1850 states and 3686 transitions. Second operand 50 states. [2019-12-27 14:57:15,377 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 Received shutdown request... [2019-12-27 14:57:54,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 743 states. [2019-12-27 14:57:55,169 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:57:55,170 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 14:57:55,175 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 14:57:55,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 02:57:55 BasicIcfg [2019-12-27 14:57:55,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 14:57:55,177 INFO L168 Benchmark]: Toolchain (without parser) took 250192.76 ms. Allocated memory was 146.8 MB in the beginning and 2.0 GB in the end (delta: 1.9 GB). Free memory was 101.0 MB in the beginning and 647.3 MB in the end (delta: -546.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,178 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1102.91 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 100.8 MB in the beginning and 109.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.79 ms. Allocated memory is still 205.0 MB. Free memory was 109.8 MB in the beginning and 107.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,181 INFO L168 Benchmark]: Boogie Preprocessor took 31.37 ms. Allocated memory is still 205.0 MB. Free memory was 107.2 MB in the beginning and 105.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,189 INFO L168 Benchmark]: RCFGBuilder took 502.59 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 105.9 MB in the beginning and 192.8 MB in the end (delta: -86.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,194 INFO L168 Benchmark]: TraceAbstraction took 248477.92 ms. Allocated memory was 234.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 191.4 MB in the beginning and 647.3 MB in the end (delta: -455.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2019-12-27 14:57:55,203 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1102.91 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 100.8 MB in the beginning and 109.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 72.79 ms. Allocated memory is still 205.0 MB. Free memory was 109.8 MB in the beginning and 107.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.37 ms. Allocated memory is still 205.0 MB. Free memory was 107.2 MB in the beginning and 105.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.59 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 105.9 MB in the beginning and 192.8 MB in the end (delta: -86.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248477.92 ms. Allocated memory was 234.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 191.4 MB in the beginning and 647.3 MB in the end (delta: -455.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (1850states) and FLOYD_HOARE automaton (currently 743 states, 50 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 785 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Result: TIMEOUT, OverallTime: 248.3s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 240.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 945 SDtfs, 13845 SDslu, 18155 SDs, 0 SdLazy, 14308 SolverSat, 5673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6404 GetRequests, 2181 SyntacticMatches, 20 SemanticMatches, 4202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2307160 ImplicationChecksByTransitivity, 222.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1850occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 23260 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1296 NumberOfCodeBlocks, 1245 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1280 ConstructedInterpolants, 0 QuantifiedInterpolants, 283934 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1286 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 152/510 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown