/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 01:36:28,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 01:36:28,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 01:36:28,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 01:36:28,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 01:36:28,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 01:36:28,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 01:36:28,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 01:36:28,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 01:36:28,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 01:36:28,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 01:36:28,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 01:36:28,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 01:36:28,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 01:36:28,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 01:36:28,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 01:36:28,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 01:36:28,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 01:36:28,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 01:36:28,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 01:36:28,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 01:36:28,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 01:36:28,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 01:36:28,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 01:36:28,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 01:36:28,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 01:36:28,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 01:36:28,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 01:36:28,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 01:36:28,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 01:36:28,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 01:36:28,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 01:36:28,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 01:36:28,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 01:36:28,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 01:36:28,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 01:36:28,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 01:36:28,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 01:36:28,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 01:36:28,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 01:36:28,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 01:36:28,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-16 01:36:28,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 01:36:28,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 01:36:28,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 01:36:28,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 01:36:28,940 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 01:36:28,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 01:36:28,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 01:36:28,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 01:36:28,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 01:36:28,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 01:36:28,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 01:36:28,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 01:36:28,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 01:36:28,942 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 01:36:28,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 01:36:28,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 01:36:28,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 01:36:28,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 01:36:28,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 01:36:28,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 01:36:28,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 01:36:28,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 01:36:28,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 01:36:28,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 01:36:28,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 01:36:28,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 01:36:28,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 01:36:28,945 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 01:36:28,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 01:36:28,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 01:36:28,946 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 01:36:29,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 01:36:29,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 01:36:29,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 01:36:29,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 01:36:29,461 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 01:36:29,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-09-16 01:36:29,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/204320909/9f28cd6922a1429b9af41e23fc50a21f/FLAG180aca80e [2020-09-16 01:36:30,299 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 01:36:30,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-09-16 01:36:30,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/204320909/9f28cd6922a1429b9af41e23fc50a21f/FLAG180aca80e [2020-09-16 01:36:30,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/204320909/9f28cd6922a1429b9af41e23fc50a21f [2020-09-16 01:36:30,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 01:36:30,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 01:36:30,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 01:36:30,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 01:36:30,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 01:36:30,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:36:30" (1/1) ... [2020-09-16 01:36:30,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:30, skipping insertion in model container [2020-09-16 01:36:30,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 01:36:30" (1/1) ... [2020-09-16 01:36:30,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 01:36:30,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 01:36:31,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:36:31,366 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 01:36:31,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 01:36:31,666 INFO L208 MainTranslator]: Completed translation [2020-09-16 01:36:31,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31 WrapperNode [2020-09-16 01:36:31,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 01:36:31,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 01:36:31,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 01:36:31,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 01:36:31,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 01:36:31,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 01:36:31,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 01:36:31,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 01:36:31,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... [2020-09-16 01:36:31,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 01:36:31,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 01:36:31,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 01:36:31,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 01:36:31,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 01:36:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 01:36:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-16 01:36:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-09-16 01:36:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-09-16 01:36:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 01:36:31,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 01:36:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 01:36:31,872 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 01:36:32,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 01:36:32,370 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 01:36:32,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:36:32 BoogieIcfgContainer [2020-09-16 01:36:32,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 01:36:32,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 01:36:32,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 01:36:32,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 01:36:32,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 01:36:30" (1/3) ... [2020-09-16 01:36:32,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e685ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:36:32, skipping insertion in model container [2020-09-16 01:36:32,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 01:36:31" (2/3) ... [2020-09-16 01:36:32,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e685ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 01:36:32, skipping insertion in model container [2020-09-16 01:36:32,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 01:36:32" (3/3) ... [2020-09-16 01:36:32,385 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-09-16 01:36:32,396 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 01:36:32,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 01:36:32,407 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 01:36:32,408 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 01:36:32,436 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,436 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,436 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,437 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,437 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,437 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,437 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,438 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,438 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,438 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,439 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,439 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,439 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,439 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,439 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,440 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,440 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,440 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,440 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,440 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,441 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,445 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,445 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,446 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,446 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,446 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,446 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,447 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,447 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 01:36:32,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-16 01:36:32,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 01:36:32,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 01:36:32,503 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 01:36:32,503 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 01:36:32,503 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 01:36:32,503 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 01:36:32,503 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 01:36:32,503 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 01:36:32,523 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 178 flow [2020-09-16 01:36:32,526 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-09-16 01:36:32,581 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-09-16 01:36:32,581 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-16 01:36:32,588 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-09-16 01:36:32,590 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-09-16 01:36:32,615 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-09-16 01:36:32,616 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-09-16 01:36:32,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-09-16 01:36:32,619 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2020-09-16 01:36:32,620 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 01:36:34,018 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-16 01:36:34,238 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-16 01:36:34,822 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-16 01:36:35,170 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-16 01:36:35,774 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-16 01:36:36,226 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-16 01:36:37,791 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-09-16 01:36:38,484 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-09-16 01:36:38,487 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2020-09-16 01:36:38,487 INFO L214 etLargeBlockEncoding]: Total number of compositions: 78 [2020-09-16 01:36:38,492 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-09-16 01:36:38,503 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2020-09-16 01:36:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-09-16 01:36:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 01:36:38,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:38,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:38,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1450466956, now seen corresponding path program 1 times [2020-09-16 01:36:38,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:38,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553277603] [2020-09-16 01:36:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:36:38,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553277603] [2020-09-16 01:36:38,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 01:36:38,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 01:36:38,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1735993686] [2020-09-16 01:36:38,794 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:38,798 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:38,817 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-09-16 01:36:38,818 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:38,864 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [122#(< ULTIMATE.start_main_~i~1 20)] [2020-09-16 01:36:38,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 01:36:38,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:38,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 01:36:38,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:36:38,888 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-09-16 01:36:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:38,932 INFO L93 Difference]: Finished difference Result 24 states and 44 transitions. [2020-09-16 01:36:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 01:36:38,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-16 01:36:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:38,949 INFO L225 Difference]: With dead ends: 24 [2020-09-16 01:36:38,950 INFO L226 Difference]: Without dead ends: 24 [2020-09-16 01:36:38,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 01:36:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-16 01:36:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-16 01:36:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-16 01:36:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-09-16 01:36:38,996 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 8 [2020-09-16 01:36:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:38,997 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-09-16 01:36:38,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 01:36:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2020-09-16 01:36:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 01:36:38,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:38,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:38,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 01:36:38,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:38,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:38,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1357612780, now seen corresponding path program 1 times [2020-09-16 01:36:38,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:39,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745822209] [2020-09-16 01:36:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:36:39,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745822209] [2020-09-16 01:36:39,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321809934] [2020-09-16 01:36:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:39,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-16 01:36:39,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-16 01:36:39,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-16 01:36:39,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-09-16 01:36:39,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [936688630] [2020-09-16 01:36:39,280 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:39,282 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:39,292 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-09-16 01:36:39,292 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:39,337 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 01:36:39,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 01:36:39,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 01:36:39,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:36:39,339 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 3 states. [2020-09-16 01:36:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:39,354 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2020-09-16 01:36:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 01:36:39,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 01:36:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:39,356 INFO L225 Difference]: With dead ends: 34 [2020-09-16 01:36:39,356 INFO L226 Difference]: Without dead ends: 34 [2020-09-16 01:36:39,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:36:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-16 01:36:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-09-16 01:36:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-16 01:36:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 54 transitions. [2020-09-16 01:36:39,364 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 54 transitions. Word has length 10 [2020-09-16 01:36:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:39,364 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 54 transitions. [2020-09-16 01:36:39,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 01:36:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 54 transitions. [2020-09-16 01:36:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 01:36:39,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:39,366 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:39,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-16 01:36:39,580 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash -608119097, now seen corresponding path program 1 times [2020-09-16 01:36:39,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:39,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282890632] [2020-09-16 01:36:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-16 01:36:39,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282890632] [2020-09-16 01:36:39,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831203859] [2020-09-16 01:36:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:39,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-16 01:36:39,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-16 01:36:39,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:36:39,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-16 01:36:39,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [303980048] [2020-09-16 01:36:39,818 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:39,820 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:39,823 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-09-16 01:36:39,823 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:39,888 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [358#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:36:39,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 01:36:39,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:39,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 01:36:39,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:36:39,890 INFO L87 Difference]: Start difference. First operand 29 states and 54 transitions. Second operand 6 states. [2020-09-16 01:36:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:39,917 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-09-16 01:36:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 01:36:39,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-16 01:36:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:39,919 INFO L225 Difference]: With dead ends: 44 [2020-09-16 01:36:39,920 INFO L226 Difference]: Without dead ends: 44 [2020-09-16 01:36:39,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-16 01:36:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-16 01:36:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-09-16 01:36:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-16 01:36:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2020-09-16 01:36:39,928 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 12 [2020-09-16 01:36:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:39,928 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2020-09-16 01:36:39,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 01:36:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2020-09-16 01:36:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 01:36:39,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:39,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:40,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:36:40,131 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:40,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1899195462, now seen corresponding path program 2 times [2020-09-16 01:36:40,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:40,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852936608] [2020-09-16 01:36:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-16 01:36:40,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852936608] [2020-09-16 01:36:40,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798082170] [2020-09-16 01:36:40,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:40,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-16 01:36:40,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:36:40,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:36:40,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:40,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-16 01:36:40,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:36:40,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-09-16 01:36:40,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [391030710] [2020-09-16 01:36:40,336 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:40,338 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:40,345 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-09-16 01:36:40,345 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:40,457 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [526#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 527#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:36:40,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-16 01:36:40,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:40,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-16 01:36:40,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-16 01:36:40,459 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand 8 states. [2020-09-16 01:36:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:40,522 INFO L93 Difference]: Finished difference Result 54 states and 104 transitions. [2020-09-16 01:36:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 01:36:40,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-09-16 01:36:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:40,523 INFO L225 Difference]: With dead ends: 54 [2020-09-16 01:36:40,523 INFO L226 Difference]: Without dead ends: 54 [2020-09-16 01:36:40,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-16 01:36:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-16 01:36:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-09-16 01:36:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-16 01:36:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-09-16 01:36:40,531 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 14 [2020-09-16 01:36:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:40,531 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-09-16 01:36:40,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-16 01:36:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-09-16 01:36:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-16 01:36:40,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:40,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:40,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:36:40,748 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033683, now seen corresponding path program 3 times [2020-09-16 01:36:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:40,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718535277] [2020-09-16 01:36:40,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-16 01:36:40,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718535277] [2020-09-16 01:36:40,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960058832] [2020-09-16 01:36:40,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:40,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-09-16 01:36:40,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:36:40,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-16 01:36:40,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-16 01:36:41,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:36:41,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-09-16 01:36:41,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [421295697] [2020-09-16 01:36:41,036 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:41,038 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:41,042 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 38 transitions. [2020-09-16 01:36:41,042 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:41,233 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [737#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 738#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 739#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 740#(< ULTIMATE.start_main_~i~1 20), 741#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 742#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18))] [2020-09-16 01:36:41,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-16 01:36:41,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:41,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-16 01:36:41,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-16 01:36:41,234 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 15 states. [2020-09-16 01:36:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:42,900 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2020-09-16 01:36:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-16 01:36:42,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-09-16 01:36:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:42,903 INFO L225 Difference]: With dead ends: 112 [2020-09-16 01:36:42,903 INFO L226 Difference]: Without dead ends: 112 [2020-09-16 01:36:42,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=2102, Unknown=0, NotChecked=0, Total=2862 [2020-09-16 01:36:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-16 01:36:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 103. [2020-09-16 01:36:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-16 01:36:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 202 transitions. [2020-09-16 01:36:42,917 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 202 transitions. Word has length 16 [2020-09-16 01:36:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:42,918 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 202 transitions. [2020-09-16 01:36:42,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-16 01:36:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 202 transitions. [2020-09-16 01:36:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-16 01:36:42,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:42,920 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:43,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:36:43,126 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:43,127 INFO L82 PathProgramCache]: Analyzing trace with hash -797549408, now seen corresponding path program 4 times [2020-09-16 01:36:43,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:43,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841989457] [2020-09-16 01:36:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-16 01:36:43,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841989457] [2020-09-16 01:36:43,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710799938] [2020-09-16 01:36:43,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:43,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-16 01:36:43,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:36:43,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-16 01:36:43,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-16 01:36:43,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:36:43,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-09-16 01:36:43,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [823234723] [2020-09-16 01:36:43,374 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:43,379 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:43,388 INFO L274 McrAutomatonBuilder]: Finished intersection with 40 states and 56 transitions. [2020-09-16 01:36:43,388 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:43,585 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1244#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 1245#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 1246#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 1247#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:36:43,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-16 01:36:43,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:43,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-16 01:36:43,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-09-16 01:36:43,587 INFO L87 Difference]: Start difference. First operand 103 states and 202 transitions. Second operand 12 states. [2020-09-16 01:36:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:43,660 INFO L93 Difference]: Finished difference Result 130 states and 256 transitions. [2020-09-16 01:36:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-16 01:36:43,660 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-09-16 01:36:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:43,662 INFO L225 Difference]: With dead ends: 130 [2020-09-16 01:36:43,662 INFO L226 Difference]: Without dead ends: 130 [2020-09-16 01:36:43,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-09-16 01:36:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-16 01:36:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2020-09-16 01:36:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-16 01:36:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 238 transitions. [2020-09-16 01:36:43,677 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 238 transitions. Word has length 22 [2020-09-16 01:36:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:43,678 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 238 transitions. [2020-09-16 01:36:43,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-16 01:36:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 238 transitions. [2020-09-16 01:36:43,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-16 01:36:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:43,680 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:43,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-16 01:36:43,889 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:43,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1172519469, now seen corresponding path program 5 times [2020-09-16 01:36:43,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:43,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037158962] [2020-09-16 01:36:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-16 01:36:44,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037158962] [2020-09-16 01:36:44,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701460526] [2020-09-16 01:36:44,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:44,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-09-16 01:36:44,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:36:44,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-16 01:36:44,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-16 01:36:44,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:36:44,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-09-16 01:36:44,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [581265093] [2020-09-16 01:36:44,240 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:44,245 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:44,251 INFO L274 McrAutomatonBuilder]: Finished intersection with 44 states and 62 transitions. [2020-09-16 01:36:44,251 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:44,764 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [1712#(< ULTIMATE.start_main_~i~1 20), 1713#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 1714#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18)), 1715#(or (< ULTIMATE.start_main_~i~1 17) (<= 18 ULTIMATE.start_main_~i~1)), 1716#(or (< ULTIMATE.start_main_~i~1 16) (<= 17 ULTIMATE.start_main_~i~1)), 1717#(or (<= 16 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 15)), 1718#(or (< ULTIMATE.start_main_~i~1 14) (<= 15 ULTIMATE.start_main_~i~1)), 1707#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 1708#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 1709#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 1710#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0)), 1711#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:36:44,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-16 01:36:44,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:44,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-16 01:36:44,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-09-16 01:36:44,766 INFO L87 Difference]: Start difference. First operand 121 states and 238 transitions. Second operand 27 states. [2020-09-16 01:36:52,019 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-09-16 01:36:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:36:52,022 INFO L93 Difference]: Finished difference Result 276 states and 548 transitions. [2020-09-16 01:36:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-16 01:36:52,022 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 24 [2020-09-16 01:36:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:36:52,024 INFO L225 Difference]: With dead ends: 276 [2020-09-16 01:36:52,024 INFO L226 Difference]: Without dead ends: 276 [2020-09-16 01:36:52,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6533 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4924, Invalid=14536, Unknown=0, NotChecked=0, Total=19460 [2020-09-16 01:36:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-16 01:36:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 259. [2020-09-16 01:36:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-09-16 01:36:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 514 transitions. [2020-09-16 01:36:52,048 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 514 transitions. Word has length 24 [2020-09-16 01:36:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:36:52,048 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 514 transitions. [2020-09-16 01:36:52,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-16 01:36:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 514 transitions. [2020-09-16 01:36:52,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-16 01:36:52,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:36:52,051 INFO L422 BasicCegarLoop]: trace histogram [14, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:36:52,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:36:52,269 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:36:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:36:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 514042566, now seen corresponding path program 6 times [2020-09-16 01:36:52,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:36:52,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790885466] [2020-09-16 01:36:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:36:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:36:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 105 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-16 01:36:52,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790885466] [2020-09-16 01:36:52,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165940016] [2020-09-16 01:36:52,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-16 01:36:52,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-09-16 01:36:52,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:36:52,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-16 01:36:52,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:36:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-16 01:36:52,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:36:52,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2020-09-16 01:36:52,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [187786305] [2020-09-16 01:36:52,904 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:36:52,956 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:36:52,972 INFO L274 McrAutomatonBuilder]: Finished intersection with 64 states and 92 transitions. [2020-09-16 01:36:52,973 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:36:54,148 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 21 new interpolants: [2976#(or (< ULTIMATE.start_main_~i~1 12) (<= 13 ULTIMATE.start_main_~i~1)), 2977#(or (<= 12 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 11)), 2978#(or (< ULTIMATE.start_main_~i~1 10) (<= 11 ULTIMATE.start_main_~i~1)), 2979#(or (< ULTIMATE.start_main_~i~1 9) (<= 10 ULTIMATE.start_main_~i~1)), 2980#(or (< ULTIMATE.start_main_~i~1 8) (<= 9 ULTIMATE.start_main_~i~1)), 2981#(or (< ULTIMATE.start_main_~i~1 7) (<= 8 ULTIMATE.start_main_~i~1)), 2982#(or (<= 7 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 6)), 2983#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 2984#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 2985#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 2986#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 2987#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 2988#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 2968#(< ULTIMATE.start_main_~i~1 20), 2969#(or (<= 20 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 19)), 2970#(or (<= 19 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 18)), 2971#(or (< ULTIMATE.start_main_~i~1 17) (<= 18 ULTIMATE.start_main_~i~1)), 2972#(or (< ULTIMATE.start_main_~i~1 16) (<= 17 ULTIMATE.start_main_~i~1)), 2973#(or (<= 16 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 15)), 2974#(or (< ULTIMATE.start_main_~i~1 14) (<= 15 ULTIMATE.start_main_~i~1)), 2975#(or (<= 14 ULTIMATE.start_main_~i~1) (< ULTIMATE.start_main_~i~1 13))] [2020-09-16 01:36:54,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-16 01:36:54,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:36:54,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-16 01:36:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2020-09-16 01:36:54,150 INFO L87 Difference]: Start difference. First operand 259 states and 514 transitions. Second operand 45 states. [2020-09-16 01:37:08,541 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-09-16 01:37:08,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:37:08,545 INFO L93 Difference]: Finished difference Result 418 states and 832 transitions. [2020-09-16 01:37:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2020-09-16 01:37:08,545 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 34 [2020-09-16 01:37:08,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:37:08,548 INFO L225 Difference]: With dead ends: 418 [2020-09-16 01:37:08,549 INFO L226 Difference]: Without dead ends: 418 [2020-09-16 01:37:08,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15851 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=11656, Invalid=36086, Unknown=0, NotChecked=0, Total=47742 [2020-09-16 01:37:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-09-16 01:37:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 395. [2020-09-16 01:37:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-16 01:37:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 786 transitions. [2020-09-16 01:37:08,577 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 786 transitions. Word has length 34 [2020-09-16 01:37:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:37:08,577 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 786 transitions. [2020-09-16 01:37:08,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-16 01:37:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 786 transitions. [2020-09-16 01:37:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-16 01:37:08,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:37:08,582 INFO L422 BasicCegarLoop]: trace histogram [20, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:37:08,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:08,799 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:37:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:37:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1980377447, now seen corresponding path program 7 times [2020-09-16 01:37:08,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:37:08,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900528494] [2020-09-16 01:37:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:37:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:37:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:08,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900528494] [2020-09-16 01:37:08,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352608777] [2020-09-16 01:37:08,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:37:09,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 9 conjunts are in the unsatisfiable core [2020-09-16 01:37:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:37:09,095 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:09,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:37:09,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-09-16 01:37:09,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [877508598] [2020-09-16 01:37:09,096 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:37:09,104 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:37:09,125 INFO L274 McrAutomatonBuilder]: Finished intersection with 80 states and 116 transitions. [2020-09-16 01:37:09,125 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:37:09,592 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [4848#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 3)), 4849#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 4850#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 4851#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 4845#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 4846#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 4847#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4))] [2020-09-16 01:37:09,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-16 01:37:09,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:37:09,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-16 01:37:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-09-16 01:37:09,593 INFO L87 Difference]: Start difference. First operand 395 states and 786 transitions. Second operand 18 states. [2020-09-16 01:37:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:37:09,701 INFO L93 Difference]: Finished difference Result 464 states and 924 transitions. [2020-09-16 01:37:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-16 01:37:09,701 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-09-16 01:37:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:37:09,704 INFO L225 Difference]: With dead ends: 464 [2020-09-16 01:37:09,705 INFO L226 Difference]: Without dead ends: 464 [2020-09-16 01:37:09,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-09-16 01:37:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-09-16 01:37:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 441. [2020-09-16 01:37:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-09-16 01:37:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 878 transitions. [2020-09-16 01:37:09,718 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 878 transitions. Word has length 42 [2020-09-16 01:37:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:37:09,718 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 878 transitions. [2020-09-16 01:37:09,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-16 01:37:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 878 transitions. [2020-09-16 01:37:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-16 01:37:09,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:37:09,725 INFO L422 BasicCegarLoop]: trace histogram [20, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:37:09,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-09-16 01:37:09,939 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:37:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:37:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1673963596, now seen corresponding path program 8 times [2020-09-16 01:37:09,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:37:09,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724607526] [2020-09-16 01:37:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:37:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:37:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:10,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724607526] [2020-09-16 01:37:10,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438369036] [2020-09-16 01:37:10,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:10,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-16 01:37:10,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:37:10,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-16 01:37:10,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:37:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:10,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:37:10,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-09-16 01:37:10,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [813429860] [2020-09-16 01:37:10,261 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:37:10,297 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:37:10,324 INFO L274 McrAutomatonBuilder]: Finished intersection with 84 states and 122 transitions. [2020-09-16 01:37:10,324 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:37:10,820 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 8 new interpolants: [6342#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 7) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 6343#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 6344#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 6345#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 6346#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 6347#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 6348#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 6349#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:37:10,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-16 01:37:10,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:37:10,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-16 01:37:10,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2020-09-16 01:37:10,822 INFO L87 Difference]: Start difference. First operand 441 states and 878 transitions. Second operand 20 states. [2020-09-16 01:37:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:37:10,958 INFO L93 Difference]: Finished difference Result 510 states and 1016 transitions. [2020-09-16 01:37:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-16 01:37:10,958 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2020-09-16 01:37:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:37:10,961 INFO L225 Difference]: With dead ends: 510 [2020-09-16 01:37:10,961 INFO L226 Difference]: Without dead ends: 510 [2020-09-16 01:37:10,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 101 SyntacticMatches, 14 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-09-16 01:37:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-09-16 01:37:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 487. [2020-09-16 01:37:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-09-16 01:37:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 970 transitions. [2020-09-16 01:37:10,973 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 970 transitions. Word has length 44 [2020-09-16 01:37:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:37:10,974 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 970 transitions. [2020-09-16 01:37:10,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-16 01:37:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 970 transitions. [2020-09-16 01:37:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-16 01:37:10,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:37:10,976 INFO L422 BasicCegarLoop]: trace histogram [20, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:37:11,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:11,190 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:37:11,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:37:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash 212457791, now seen corresponding path program 9 times [2020-09-16 01:37:11,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:37:11,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600101870] [2020-09-16 01:37:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:37:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:37:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:11,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600101870] [2020-09-16 01:37:11,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117187984] [2020-09-16 01:37:11,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:11,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-09-16 01:37:11,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:37:11,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-16 01:37:11,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:37:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:11,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:37:11,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-09-16 01:37:11,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1207800888] [2020-09-16 01:37:11,556 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:37:11,564 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:37:11,588 INFO L274 McrAutomatonBuilder]: Finished intersection with 88 states and 128 transitions. [2020-09-16 01:37:11,588 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:37:12,230 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [7985#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 7986#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 7) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 7987#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 7988#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 5)), 7989#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 7990#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 7991#(or (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2)), 7992#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 7993#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:37:12,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-16 01:37:12,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:37:12,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-16 01:37:12,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-09-16 01:37:12,232 INFO L87 Difference]: Start difference. First operand 487 states and 970 transitions. Second operand 22 states. [2020-09-16 01:37:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:37:12,395 INFO L93 Difference]: Finished difference Result 556 states and 1108 transitions. [2020-09-16 01:37:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-16 01:37:12,395 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 46 [2020-09-16 01:37:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:37:12,401 INFO L225 Difference]: With dead ends: 556 [2020-09-16 01:37:12,401 INFO L226 Difference]: Without dead ends: 556 [2020-09-16 01:37:12,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 104 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-09-16 01:37:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-09-16 01:37:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 533. [2020-09-16 01:37:12,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-16 01:37:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1062 transitions. [2020-09-16 01:37:12,423 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1062 transitions. Word has length 46 [2020-09-16 01:37:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:37:12,423 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 1062 transitions. [2020-09-16 01:37:12,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-16 01:37:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1062 transitions. [2020-09-16 01:37:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-16 01:37:12,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:37:12,426 INFO L422 BasicCegarLoop]: trace histogram [20, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:37:12,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:12,639 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:37:12,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:37:12,640 INFO L82 PathProgramCache]: Analyzing trace with hash 159684978, now seen corresponding path program 10 times [2020-09-16 01:37:12,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:37:12,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045029861] [2020-09-16 01:37:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:37:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:37:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:12,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045029861] [2020-09-16 01:37:12,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257059246] [2020-09-16 01:37:12,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:13,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-09-16 01:37:13,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:37:13,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2020-09-16 01:37:13,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:37:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:13,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:37:13,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-09-16 01:37:13,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [219852919] [2020-09-16 01:37:13,055 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:37:13,062 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:37:13,082 INFO L274 McrAutomatonBuilder]: Finished intersection with 92 states and 134 transitions. [2020-09-16 01:37:13,082 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:37:13,804 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 10 new interpolants: [9776#(or (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 7)), 9777#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0)), 9778#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 9779#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 4) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 9780#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0)), 9781#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 2) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 9782#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0)), 9783#(or (<= 11 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 0)), 9774#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 9) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 9775#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0))] [2020-09-16 01:37:13,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-16 01:37:13,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:37:13,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-16 01:37:13,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-09-16 01:37:13,805 INFO L87 Difference]: Start difference. First operand 533 states and 1062 transitions. Second operand 24 states. [2020-09-16 01:37:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 01:37:13,938 INFO L93 Difference]: Finished difference Result 602 states and 1200 transitions. [2020-09-16 01:37:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-16 01:37:13,938 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-09-16 01:37:13,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 01:37:13,941 INFO L225 Difference]: With dead ends: 602 [2020-09-16 01:37:13,942 INFO L226 Difference]: Without dead ends: 602 [2020-09-16 01:37:13,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 107 SyntacticMatches, 18 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-16 01:37:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-16 01:37:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 579. [2020-09-16 01:37:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-09-16 01:37:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 1154 transitions. [2020-09-16 01:37:13,957 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 1154 transitions. Word has length 48 [2020-09-16 01:37:13,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 01:37:13,957 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 1154 transitions. [2020-09-16 01:37:13,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-16 01:37:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 1154 transitions. [2020-09-16 01:37:13,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-16 01:37:13,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 01:37:13,959 INFO L422 BasicCegarLoop]: trace histogram [20, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 01:37:14,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-09-16 01:37:14,173 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 01:37:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 01:37:14,173 INFO L82 PathProgramCache]: Analyzing trace with hash 984619237, now seen corresponding path program 11 times [2020-09-16 01:37:14,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 01:37:14,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953367708] [2020-09-16 01:37:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 01:37:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 01:37:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-09-16 01:37:14,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953367708] [2020-09-16 01:37:14,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862401989] [2020-09-16 01:37:14,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-16 01:37:14,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-09-16 01:37:14,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-16 01:37:14,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 44 conjunts are in the unsatisfiable core [2020-09-16 01:37:14,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-16 01:37:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 01:37:16,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-16 01:37:16,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 43] total 57 [2020-09-16 01:37:16,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1410080384] [2020-09-16 01:37:16,115 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 01:37:16,123 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 01:37:16,150 INFO L274 McrAutomatonBuilder]: Finished intersection with 96 states and 140 transitions. [2020-09-16 01:37:16,150 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 01:37:17,509 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 11 new interpolants: [11760#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 1) (<= 11 thread_function_dataraceThread1of1ForFork0_~i~0)), 11761#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 0) (<= 10 thread_function_dataraceThread1of1ForFork0_~i~0)), 11751#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 10) (<= 20 thread_function_dataraceThread1of1ForFork0_~i~0)), 11752#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 9) (<= 19 thread_function_dataraceThread1of1ForFork0_~i~0)), 11753#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 8) (<= 18 thread_function_dataraceThread1of1ForFork0_~i~0)), 11754#(or (<= 17 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 7)), 11755#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 6) (<= 16 thread_function_dataraceThread1of1ForFork0_~i~0)), 11756#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 5) (<= 15 thread_function_dataraceThread1of1ForFork0_~i~0)), 11757#(or (<= 14 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 4)), 11758#(or (<= thread_function_dataraceThread1of1ForFork0_~i~0 3) (<= 13 thread_function_dataraceThread1of1ForFork0_~i~0)), 11759#(or (<= 12 thread_function_dataraceThread1of1ForFork0_~i~0) (<= thread_function_dataraceThread1of1ForFork0_~i~0 2))] [2020-09-16 01:37:17,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-09-16 01:37:17,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 01:37:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-09-16 01:37:17,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=816, Invalid=3740, Unknown=0, NotChecked=0, Total=4556 [2020-09-16 01:37:17,511 INFO L87 Difference]: Start difference. First operand 579 states and 1154 transitions. Second operand 68 states. [2020-09-16 01:38:27,212 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-09-16 01:41:36,767 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 7