/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:39:39,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:39:39,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:39:39,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:39:39,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:39:39,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:39:39,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:39:39,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:39:39,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:39:39,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:39:39,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:39:39,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:39:39,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:39:39,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:39:39,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:39:39,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:39:39,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:39:39,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:39:39,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:39:39,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:39:39,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:39:39,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:39:39,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:39:39,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:39:39,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:39:39,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:39:39,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:39:39,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:39:39,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:39:39,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:39:39,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:39:39,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:39:39,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:39:39,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:39:39,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:39:39,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:39:39,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:39:39,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:39:39,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:39:39,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:39:39,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:39:39,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:39:39,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:39:39,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:39:39,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:39:39,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:39:39,801 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:39:39,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:39:39,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:39:39,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:39:39,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:39:39,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:39:39,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:39:39,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:39:39,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:39:39,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:39:39,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:39:39,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:39:39,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:39:39,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:39:39,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:39:39,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:39:39,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:39:39,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:39:39,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:39:39,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:39:39,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:39:39,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:39:39,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:39:39,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:39:39,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:39:40,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:39:40,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:39:40,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:39:40,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:39:40,117 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:39:40,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-17 22:39:40,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357f61975/8e38b22092144eac81c60c8d56a6666a/FLAG7a2fd0636 [2020-04-17 22:39:40,759 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:39:40,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2020-04-17 22:39:40,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357f61975/8e38b22092144eac81c60c8d56a6666a/FLAG7a2fd0636 [2020-04-17 22:39:41,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/357f61975/8e38b22092144eac81c60c8d56a6666a [2020-04-17 22:39:41,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:39:41,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:39:41,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:39:41,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:39:41,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:39:41,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b347a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41, skipping insertion in model container [2020-04-17 22:39:41,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:39:41,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:39:41,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:39:41,649 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:39:41,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:39:41,784 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:39:41,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41 WrapperNode [2020-04-17 22:39:41,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:39:41,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:39:41,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:39:41,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:39:41,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:39:41,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:39:41,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:39:41,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:39:41,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... [2020-04-17 22:39:41,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:39:41,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:39:41,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:39:41,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:39:41,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:39:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:39:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:39:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:39:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:39:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:39:41,941 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:39:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:39:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:39:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:39:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:39:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:39:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:39:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:39:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:39:41,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:39:41,945 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:39:42,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:39:42,368 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:39:42,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:39:42 BoogieIcfgContainer [2020-04-17 22:39:42,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:39:42,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:39:42,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:39:42,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:39:42,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:39:41" (1/3) ... [2020-04-17 22:39:42,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e9f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:39:42, skipping insertion in model container [2020-04-17 22:39:42,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:39:41" (2/3) ... [2020-04-17 22:39:42,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e9f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:39:42, skipping insertion in model container [2020-04-17 22:39:42,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:39:42" (3/3) ... [2020-04-17 22:39:42,383 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2020-04-17 22:39:42,394 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:39:42,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:39:42,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:39:42,404 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:39:42,441 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,442 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,442 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,443 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,443 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,443 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,444 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,445 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,445 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,445 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,447 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,447 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,448 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,449 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,450 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,450 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,450 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,451 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,451 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,451 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,452 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,452 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,455 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,455 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,460 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,461 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,467 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,467 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,468 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,468 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,472 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,472 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,472 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,473 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,475 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,475 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,476 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,476 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:39:42,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:39:42,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:39:42,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:39:42,515 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:39:42,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:39:42,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:39:42,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:39:42,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:39:42,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:39:42,532 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-17 22:39:42,534 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 22:39:42,597 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 22:39:42,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:39:42,605 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 22:39:42,610 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 22:39:42,635 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 22:39:42,635 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:39:42,636 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 22:39:42,639 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-17 22:39:42,640 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:39:44,573 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-17 22:39:44,651 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-17 22:39:44,651 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-17 22:39:44,655 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-17 22:39:44,778 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-17 22:39:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-17 22:39:44,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:39:44,794 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:44,796 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:44,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:44,803 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-17 22:39:44,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:44,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573020376] [2020-04-17 22:39:44,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:44,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573020376] [2020-04-17 22:39:44,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:44,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:39:44,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029270524] [2020-04-17 22:39:45,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:39:45,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:45,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:39:45,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:39:45,019 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-17 22:39:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:45,079 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-17 22:39:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:39:45,081 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:39:45,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:45,149 INFO L225 Difference]: With dead ends: 1450 [2020-04-17 22:39:45,149 INFO L226 Difference]: Without dead ends: 1194 [2020-04-17 22:39:45,153 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:39:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-17 22:39:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-17 22:39:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-17 22:39:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-17 22:39:45,295 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-17 22:39:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:45,297 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-17 22:39:45,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:39:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-17 22:39:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:39:45,310 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:45,316 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:45,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:45,317 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-17 22:39:45,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:45,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73443581] [2020-04-17 22:39:45,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:45,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73443581] [2020-04-17 22:39:45,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:45,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:39:45,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444648391] [2020-04-17 22:39:45,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:39:45,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:45,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:39:45,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:39:45,487 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-17 22:39:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:45,530 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-17 22:39:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:39:45,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:39:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:45,540 INFO L225 Difference]: With dead ends: 1322 [2020-04-17 22:39:45,541 INFO L226 Difference]: Without dead ends: 1066 [2020-04-17 22:39:45,542 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-17 22:39:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-17 22:39:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-17 22:39:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-17 22:39:45,584 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-17 22:39:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:45,584 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-17 22:39:45,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:39:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-17 22:39:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:39:45,586 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:45,586 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:45,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-04-17 22:39:45,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:45,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212517587] [2020-04-17 22:39:45,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:45,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212517587] [2020-04-17 22:39:45,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:45,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:39:45,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490645638] [2020-04-17 22:39:45,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:39:45,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:45,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:39:45,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:39:45,657 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-17 22:39:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:45,689 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-17 22:39:45,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:39:45,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:39:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:45,698 INFO L225 Difference]: With dead ends: 1162 [2020-04-17 22:39:45,698 INFO L226 Difference]: Without dead ends: 970 [2020-04-17 22:39:45,699 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-17 22:39:45,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-17 22:39:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-17 22:39:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-17 22:39:45,738 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-17 22:39:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:45,738 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-17 22:39:45,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:39:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-17 22:39:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:39:45,740 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:45,740 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:45,741 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:45,741 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-04-17 22:39:45,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:45,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767046630] [2020-04-17 22:39:45,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:45,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767046630] [2020-04-17 22:39:45,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:45,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:39:45,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648492473] [2020-04-17 22:39:45,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:39:45,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:45,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:39:45,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:39:45,797 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-17 22:39:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:45,824 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-17 22:39:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:39:45,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:39:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:45,832 INFO L225 Difference]: With dead ends: 1042 [2020-04-17 22:39:45,833 INFO L226 Difference]: Without dead ends: 898 [2020-04-17 22:39:45,833 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-17 22:39:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-17 22:39:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-17 22:39:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-17 22:39:45,864 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-17 22:39:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:45,865 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-17 22:39:45,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:39:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-17 22:39:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:39:45,867 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:45,867 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:45,867 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:45,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:45,867 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-17 22:39:45,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:45,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050005296] [2020-04-17 22:39:45,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:45,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050005296] [2020-04-17 22:39:45,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:45,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:39:45,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079145726] [2020-04-17 22:39:45,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:39:45,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:45,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:39:45,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:39:45,922 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-04-17 22:39:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:45,962 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-04-17 22:39:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:39:45,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:39:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:45,970 INFO L225 Difference]: With dead ends: 952 [2020-04-17 22:39:45,971 INFO L226 Difference]: Without dead ends: 844 [2020-04-17 22:39:45,971 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-04-17 22:39:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-04-17 22:39:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-04-17 22:39:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-04-17 22:39:46,029 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-04-17 22:39:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:46,029 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-04-17 22:39:46,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:39:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-04-17 22:39:46,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:39:46,032 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:46,032 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:46,032 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:46,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-04-17 22:39:46,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:46,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002163302] [2020-04-17 22:39:46,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:46,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002163302] [2020-04-17 22:39:46,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:46,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:39:46,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283590779] [2020-04-17 22:39:46,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:39:46,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:46,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:39:46,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:46,109 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-04-17 22:39:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:46,175 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-04-17 22:39:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:39:46,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:39:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:46,180 INFO L225 Difference]: With dead ends: 1063 [2020-04-17 22:39:46,181 INFO L226 Difference]: Without dead ends: 472 [2020-04-17 22:39:46,181 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:39:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-17 22:39:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-17 22:39:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-17 22:39:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-17 22:39:46,198 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-04-17 22:39:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:46,198 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-17 22:39:46,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:39:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-17 22:39:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:39:46,200 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:46,200 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:46,200 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:46,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:46,201 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-17 22:39:46,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:46,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165841305] [2020-04-17 22:39:46,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:46,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165841305] [2020-04-17 22:39:46,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:46,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:39:46,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427807605] [2020-04-17 22:39:46,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:39:46,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:46,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:39:46,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:46,291 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-04-17 22:39:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:46,344 INFO L93 Difference]: Finished difference Result 622 states and 1921 transitions. [2020-04-17 22:39:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:39:46,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 22:39:46,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:46,347 INFO L225 Difference]: With dead ends: 622 [2020-04-17 22:39:46,347 INFO L226 Difference]: Without dead ends: 304 [2020-04-17 22:39:46,349 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:39:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-04-17 22:39:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-04-17 22:39:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-04-17 22:39:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 882 transitions. [2020-04-17 22:39:46,358 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 882 transitions. Word has length 16 [2020-04-17 22:39:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:46,359 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 882 transitions. [2020-04-17 22:39:46,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:39:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 882 transitions. [2020-04-17 22:39:46,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:39:46,360 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:46,360 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:46,360 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -583625760, now seen corresponding path program 1 times [2020-04-17 22:39:46,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:46,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758492195] [2020-04-17 22:39:46,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:46,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758492195] [2020-04-17 22:39:46,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:46,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:39:46,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404821273] [2020-04-17 22:39:46,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:39:46,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:39:46,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:46,470 INFO L87 Difference]: Start difference. First operand 304 states and 882 transitions. Second operand 5 states. [2020-04-17 22:39:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:46,519 INFO L93 Difference]: Finished difference Result 388 states and 1110 transitions. [2020-04-17 22:39:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:39:46,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-17 22:39:46,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:46,521 INFO L225 Difference]: With dead ends: 388 [2020-04-17 22:39:46,521 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 22:39:46,522 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:39:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 22:39:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 22:39:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 22:39:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-04-17 22:39:46,527 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-04-17 22:39:46,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:46,528 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-04-17 22:39:46,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:39:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-04-17 22:39:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:39:46,529 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:39:46,529 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:39:46,529 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:39:46,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:39:46,530 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-04-17 22:39:46,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:39:46,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52470541] [2020-04-17 22:39:46,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:39:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:39:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:39:46,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52470541] [2020-04-17 22:39:46,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:39:46,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:39:46,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208606290] [2020-04-17 22:39:46,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:39:46,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:39:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:39:46,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:39:46,587 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 5 states. [2020-04-17 22:39:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:39:46,629 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-04-17 22:39:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:39:46,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:39:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:39:46,631 INFO L225 Difference]: With dead ends: 148 [2020-04-17 22:39:46,631 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:39:46,631 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:39:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:39:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:39:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:39:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:39:46,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:39:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:39:46,634 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:39:46,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:39:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:39:46,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:39:46,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:39:46 BasicIcfg [2020-04-17 22:39:46,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:39:46,641 INFO L168 Benchmark]: Toolchain (without parser) took 5603.38 ms. Allocated memory was 138.4 MB in the beginning and 291.5 MB in the end (delta: 153.1 MB). Free memory was 101.3 MB in the beginning and 167.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,643 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.53 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 159.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.32 ms. Allocated memory is still 202.9 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,650 INFO L168 Benchmark]: Boogie Preprocessor took 30.95 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 155.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,650 INFO L168 Benchmark]: RCFGBuilder took 489.24 ms. Allocated memory is still 202.9 MB. Free memory was 155.0 MB in the beginning and 130.6 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,652 INFO L168 Benchmark]: TraceAbstraction took 4264.94 ms. Allocated memory was 202.9 MB in the beginning and 291.5 MB in the end (delta: 88.6 MB). Free memory was 130.6 MB in the beginning and 167.3 MB in the end (delta: -36.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-04-17 22:39:46,665 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.53 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 159.0 MB in the end (delta: -59.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.32 ms. Allocated memory is still 202.9 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.95 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 155.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.24 ms. Allocated memory is still 202.9 MB. Free memory was 155.0 MB in the beginning and 130.6 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4264.94 ms. Allocated memory was 202.9 MB in the beginning and 291.5 MB in the end (delta: 88.6 MB). Free memory was 130.6 MB in the beginning and 167.3 MB in the end (delta: -36.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 263 SDtfs, 285 SDslu, 366 SDs, 0 SdLazy, 63 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 4689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...