/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:00:30,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:00:30,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:00:30,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:00:30,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:00:30,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:00:30,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:00:30,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:00:30,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:00:30,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:00:30,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:00:30,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:00:30,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:00:30,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:00:30,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:00:30,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:00:30,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:00:30,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:00:30,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:00:30,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:00:30,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:00:30,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:00:30,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:00:30,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:00:30,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:00:30,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:00:30,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:00:30,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:00:30,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:00:30,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:00:30,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:00:30,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:00:30,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:00:30,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:00:30,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:00:30,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:00:30,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:00:30,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:00:30,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:00:30,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:00:30,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:00:30,796 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-VariableLbe.epf [2020-04-18 02:00:30,822 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:00:30,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:00:30,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:00:30,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:00:30,825 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:00:30,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:00:30,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:00:30,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:00:30,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:00:30,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:00:30,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:00:30,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:00:30,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:00:30,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:00:30,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:00:30,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:00:30,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:00:30,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:00:30,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:00:30,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:00:30,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:00:30,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:00:30,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:00:30,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:00:30,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:00:30,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:00:30,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:00:30,831 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:00:30,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:00:30,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:00:31,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:00:31,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:00:31,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:00:31,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:00:31,138 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:00:31,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2020-04-18 02:00:31,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c438defd6/9254c006e4634bd9b4d8e5980118b5f7/FLAG15a75d89c [2020-04-18 02:00:31,781 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:00:31,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2020-04-18 02:00:31,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c438defd6/9254c006e4634bd9b4d8e5980118b5f7/FLAG15a75d89c [2020-04-18 02:00:32,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c438defd6/9254c006e4634bd9b4d8e5980118b5f7 [2020-04-18 02:00:32,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:00:32,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:00:32,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:00:32,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:00:32,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:00:32,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129ac6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32, skipping insertion in model container [2020-04-18 02:00:32,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:00:32,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:00:32,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:00:32,651 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:00:32,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:00:32,794 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:00:32,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32 WrapperNode [2020-04-18 02:00:32,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:00:32,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:00:32,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:00:32,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:00:32,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:00:32,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:00:32,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:00:32,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:00:32,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (1/1) ... [2020-04-18 02:00:32,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:00:32,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:00:32,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:00:32,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:00:32,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (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 [2020-04-18 02:00:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:00:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:00:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:00:32,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:00:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:00:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:00:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:00:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:00:32,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:00:32,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:00:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:00:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:00:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:00:32,954 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:00:33,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:00:33,329 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:00:33,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:00:33 BoogieIcfgContainer [2020-04-18 02:00:33,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:00:33,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:00:33,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:00:33,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:00:33,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:00:32" (1/3) ... [2020-04-18 02:00:33,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a52d884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:00:33, skipping insertion in model container [2020-04-18 02:00:33,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:00:32" (2/3) ... [2020-04-18 02:00:33,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a52d884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:00:33, skipping insertion in model container [2020-04-18 02:00:33,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:00:33" (3/3) ... [2020-04-18 02:00:33,342 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2020-04-18 02:00:33,352 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:00:33,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:00:33,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:00:33,361 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:00:33,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,389 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,389 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,390 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,390 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,391 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,391 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,391 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,392 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,392 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,392 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,392 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,393 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,393 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,393 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,394 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,394 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,394 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,401 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,402 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,402 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,405 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,411 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,412 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,412 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,412 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,415 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,415 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,416 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,416 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:00:33,433 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:00:33,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:00:33,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:00:33,450 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:00:33,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:00:33,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:00:33,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:00:33,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:00:33,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:00:33,467 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:33,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:33,512 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:00:33,512 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:00:33,517 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:00:33,520 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:00:33,540 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:00:33,541 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:00:33,541 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:00:33,544 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:00:33,546 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:00:34,930 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:00:35,118 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-18 02:00:35,119 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-18 02:00:35,122 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:00:35,148 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:00:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:00:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:00:35,158 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:35,159 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:35,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:35,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-18 02:00:35,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:35,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348783284] [2020-04-18 02:00:35,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:35,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348783284] [2020-04-18 02:00:35,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:35,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:00:35,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112122431] [2020-04-18 02:00:35,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:00:35,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:35,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:00:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:00:35,413 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:00:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:35,487 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 02:00:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:00:35,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:00:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:35,526 INFO L225 Difference]: With dead ends: 282 [2020-04-18 02:00:35,531 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 02:00:35,534 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:00:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 02:00:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 02:00:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 02:00:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 02:00:35,638 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 02:00:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:35,639 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 02:00:35,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:00:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 02:00:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:00:35,642 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:35,642 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:35,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-04-18 02:00:35,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:35,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231488583] [2020-04-18 02:00:35,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:35,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231488583] [2020-04-18 02:00:35,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:35,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:35,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256711275] [2020-04-18 02:00:35,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:35,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:35,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:35,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:35,740 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 02:00:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:35,792 INFO L93 Difference]: Finished difference Result 290 states and 762 transitions. [2020-04-18 02:00:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:35,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:00:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:35,795 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:00:35,795 INFO L226 Difference]: Without dead ends: 164 [2020-04-18 02:00:35,796 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 [2020-04-18 02:00:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-04-18 02:00:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-04-18 02:00:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-04-18 02:00:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 424 transitions. [2020-04-18 02:00:35,807 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 424 transitions. Word has length 9 [2020-04-18 02:00:35,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:35,808 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 424 transitions. [2020-04-18 02:00:35,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 424 transitions. [2020-04-18 02:00:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:00:35,809 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:35,810 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:35,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:35,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1379691760, now seen corresponding path program 1 times [2020-04-18 02:00:35,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:35,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357197172] [2020-04-18 02:00:35,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:35,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357197172] [2020-04-18 02:00:35,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:35,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:00:35,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986305100] [2020-04-18 02:00:35,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:35,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:35,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:35,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:35,871 INFO L87 Difference]: Start difference. First operand 164 states and 424 transitions. Second operand 4 states. [2020-04-18 02:00:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:35,919 INFO L93 Difference]: Finished difference Result 244 states and 582 transitions. [2020-04-18 02:00:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:00:35,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:00:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:35,922 INFO L225 Difference]: With dead ends: 244 [2020-04-18 02:00:35,922 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 02:00:35,922 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:00:35,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 02:00:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2020-04-18 02:00:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-18 02:00:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 268 transitions. [2020-04-18 02:00:35,932 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 268 transitions. Word has length 11 [2020-04-18 02:00:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:35,932 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 268 transitions. [2020-04-18 02:00:35,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 268 transitions. [2020-04-18 02:00:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:00:35,933 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:35,933 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:35,933 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:35,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-04-18 02:00:35,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:35,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690130799] [2020-04-18 02:00:35,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:35,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690130799] [2020-04-18 02:00:35,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:35,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:35,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119004783] [2020-04-18 02:00:35,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:35,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:35,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:35,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:35,984 INFO L87 Difference]: Start difference. First operand 116 states and 268 transitions. Second operand 4 states. [2020-04-18 02:00:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:36,015 INFO L93 Difference]: Finished difference Result 140 states and 310 transitions. [2020-04-18 02:00:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:36,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:00:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:36,017 INFO L225 Difference]: With dead ends: 140 [2020-04-18 02:00:36,017 INFO L226 Difference]: Without dead ends: 68 [2020-04-18 02:00:36,018 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 [2020-04-18 02:00:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-18 02:00:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-18 02:00:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-18 02:00:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-18 02:00:36,028 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 11 [2020-04-18 02:00:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:36,028 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-18 02:00:36,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:36,029 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-18 02:00:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:00:36,029 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:00:36,030 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:00:36,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:00:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:00:36,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 1 times [2020-04-18 02:00:36,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:00:36,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646088723] [2020-04-18 02:00:36,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:00:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:00:36,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:00:36,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646088723] [2020-04-18 02:00:36,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:00:36,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:00:36,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982402670] [2020-04-18 02:00:36,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:00:36,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:00:36,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:00:36,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:00:36,110 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-18 02:00:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:00:36,125 INFO L93 Difference]: Finished difference Result 56 states and 112 transitions. [2020-04-18 02:00:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:00:36,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:00:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:00:36,126 INFO L225 Difference]: With dead ends: 56 [2020-04-18 02:00:36,126 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:00:36,126 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 [2020-04-18 02:00:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:00:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:00:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:00:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:00:36,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-04-18 02:00:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:00:36,128 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:00:36,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:00:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:00:36,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:00:36,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:00:36 BasicIcfg [2020-04-18 02:00:36,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:00:36,134 INFO L168 Benchmark]: Toolchain (without parser) took 4063.25 ms. Allocated memory was 138.9 MB in the beginning and 252.7 MB in the end (delta: 113.8 MB). Free memory was 99.7 MB in the beginning and 131.5 MB in the end (delta: -31.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,135 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.13 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 159.2 MB in the end (delta: -61.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,138 INFO L168 Benchmark]: Boogie Preprocessor took 28.82 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,139 INFO L168 Benchmark]: RCFGBuilder took 459.87 ms. Allocated memory is still 202.4 MB. Free memory was 155.0 MB in the beginning and 133.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,140 INFO L168 Benchmark]: TraceAbstraction took 2797.52 ms. Allocated memory was 202.4 MB in the beginning and 252.7 MB in the end (delta: 50.3 MB). Free memory was 132.3 MB in the beginning and 131.5 MB in the end (delta: 789.1 kB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:00:36,145 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.13 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 97.6 MB in the beginning and 159.2 MB in the end (delta: -61.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.69 ms. Allocated memory is still 202.4 MB. Free memory was 158.5 MB in the beginning and 156.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.82 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 155.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.87 ms. Allocated memory is still 202.4 MB. Free memory was 155.0 MB in the beginning and 133.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2797.52 ms. Allocated memory was 202.4 MB in the beginning and 252.7 MB in the end (delta: 50.3 MB). Free memory was 132.3 MB in the beginning and 131.5 MB in the end (delta: 789.1 kB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 653 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 90 SDtfs, 88 SDslu, 88 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...