/usr/bin/java -Xmx16000000000 -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-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:47:34,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:47:34,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:47:34,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:47:34,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:47:34,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:47:34,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:47:34,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:47:34,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:47:34,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:47:34,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:47:34,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:47:34,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:47:34,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:47:34,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:47:34,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:47:34,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:47:34,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:47:34,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:47:34,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:47:34,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:47:34,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:47:34,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:47:34,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:47:34,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:47:34,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:47:34,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:47:34,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:47:34,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:47:34,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:47:34,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:47:34,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:47:34,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:47:34,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:47:34,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:47:34,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:47:34,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:47:34,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:47:34,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:47:34,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:47:34,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:47:34,792 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-PN-SemanticLbe.epf [2020-10-16 01:47:34,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:47:34,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:47:34,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:47:34,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:47:34,819 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:47:34,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:47:34,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:47:34,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:47:34,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:47:34,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:47:34,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:47:34,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:47:34,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:47:34,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:47:34,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:47:34,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:47:34,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:47:34,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:47:34,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:47:34,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:47:34,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:47:34,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:47:34,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:47:34,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:47:34,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:47:34,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:47:34,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:47:34,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:47:34,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:47:35,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:47:35,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:47:35,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:47:35,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:47:35,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:47:35,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-16 01:47:35,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37cbc9e5/93a2f476dfb94b9da0fe18783608486b/FLAG6249fc8b6 [2020-10-16 01:47:35,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:47:35,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc.i [2020-10-16 01:47:35,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37cbc9e5/93a2f476dfb94b9da0fe18783608486b/FLAG6249fc8b6 [2020-10-16 01:47:36,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37cbc9e5/93a2f476dfb94b9da0fe18783608486b [2020-10-16 01:47:36,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:47:36,064 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:47:36,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:47:36,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:47:36,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:47:36,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a29d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36, skipping insertion in model container [2020-10-16 01:47:36,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:47:36,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:47:36,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:47:36,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:47:36,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:47:36,784 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:47:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36 WrapperNode [2020-10-16 01:47:36,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:47:36,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:47:36,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:47:36,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:47:36,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:47:36,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:47:36,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:47:36,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:47:36,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (1/1) ... [2020-10-16 01:47:36,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:47:36,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:47:36,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:47:36,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:47:36,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (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 [2020-10-16 01:47:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:47:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:47:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:47:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:47:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:47:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:47:36,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:47:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:47:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:47:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:47:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 01:47:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 01:47:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:47:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:47:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:47:36,942 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:47:37,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:47:37,346 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:47:37,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:37 BoogieIcfgContainer [2020-10-16 01:47:37,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:47:37,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:47:37,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:47:37,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:47:37,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:47:36" (1/3) ... [2020-10-16 01:47:37,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d910969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:37, skipping insertion in model container [2020-10-16 01:47:37,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:47:36" (2/3) ... [2020-10-16 01:47:37,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d910969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:47:37, skipping insertion in model container [2020-10-16 01:47:37,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:47:37" (3/3) ... [2020-10-16 01:47:37,364 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-10-16 01:47:37,376 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:47:37,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:47:37,385 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:47:37,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,419 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,421 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,424 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,424 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,424 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,425 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,425 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,426 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,436 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,436 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,436 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,437 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,439 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,439 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,439 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,439 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,442 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,442 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,442 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:47:37,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:47:37,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:47:37,484 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:47:37,485 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:47:37,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:47:37,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:47:37,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:47:37,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:47:37,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:47:37,500 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-10-16 01:47:37,551 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-10-16 01:47:37,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:37,557 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. [2020-10-16 01:47:37,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2020-10-16 01:47:37,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2020-10-16 01:47:37,567 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:47:37,570 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 69 transitions, 150 flow [2020-10-16 01:47:37,573 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 69 transitions, 150 flow [2020-10-16 01:47:37,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 150 flow [2020-10-16 01:47:37,597 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2020-10-16 01:47:37,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:37,598 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-10-16 01:47:37,601 INFO L117 LiptonReduction]: Number of co-enabled transitions 1392 [2020-10-16 01:47:39,106 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-16 01:47:39,225 INFO L132 LiptonReduction]: Checked pairs total: 3412 [2020-10-16 01:47:39,226 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 01:47:39,229 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1664 [2020-10-16 01:47:39,238 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 01:47:39,238 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:39,239 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:39,240 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:39,240 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:39,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1611556140, now seen corresponding path program 1 times [2020-10-16 01:47:39,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:39,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564648183] [2020-10-16 01:47:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:39,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564648183] [2020-10-16 01:47:39,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:39,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:47:39,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770840300] [2020-10-16 01:47:39,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:47:39,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:39,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:47:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:47:39,483 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 138 [2020-10-16 01:47:39,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 58 flow. Second operand 2 states. [2020-10-16 01:47:39,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:39,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 138 [2020-10-16 01:47:39,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:39,498 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 01:47:39,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:39,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:47:39,499 INFO L132 encePairwiseOnDemand]: 137/138 looper letters, 0 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2020-10-16 01:47:39,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 56 flow [2020-10-16 01:47:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:47:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:47:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 261 transitions. [2020-10-16 01:47:39,515 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9456521739130435 [2020-10-16 01:47:39,516 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 261 transitions. [2020-10-16 01:47:39,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 261 transitions. [2020-10-16 01:47:39,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:39,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 261 transitions. [2020-10-16 01:47:39,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:47:39,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:47:39,532 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:47:39,534 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 58 flow. Second operand 2 states and 261 transitions. [2020-10-16 01:47:39,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 56 flow [2020-10-16 01:47:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 52 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:47:39,540 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 52 flow [2020-10-16 01:47:39,543 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2020-10-16 01:47:39,544 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2020-10-16 01:47:39,544 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 52 flow [2020-10-16 01:47:39,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:47:39,544 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:39,544 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:39,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:47:39,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:39,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:39,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1581367250, now seen corresponding path program 1 times [2020-10-16 01:47:39,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:39,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415161369] [2020-10-16 01:47:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:39,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415161369] [2020-10-16 01:47:39,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:39,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:47:39,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406289369] [2020-10-16 01:47:39,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:47:39,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:39,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:47:39,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:47:39,660 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 138 [2020-10-16 01:47:39,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 52 flow. Second operand 3 states. [2020-10-16 01:47:39,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:39,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 138 [2020-10-16 01:47:39,661 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:39,676 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 01:47:39,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:47:39,676 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:47:39,677 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 01:47:39,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 58 flow [2020-10-16 01:47:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:47:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:47:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2020-10-16 01:47:39,680 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.857487922705314 [2020-10-16 01:47:39,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2020-10-16 01:47:39,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2020-10-16 01:47:39,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:39,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2020-10-16 01:47:39,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:47:39,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:47:39,686 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:47:39,686 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 52 flow. Second operand 3 states and 355 transitions. [2020-10-16 01:47:39,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 58 flow [2020-10-16 01:47:39,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:47:39,688 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 60 flow [2020-10-16 01:47:39,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 01:47:39,689 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2020-10-16 01:47:39,689 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 60 flow [2020-10-16 01:47:39,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:47:39,690 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:39,690 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:39,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:47:39,690 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2101455728, now seen corresponding path program 1 times [2020-10-16 01:47:39,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:39,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783760711] [2020-10-16 01:47:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783760711] [2020-10-16 01:47:39,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:39,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:47:39,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883140237] [2020-10-16 01:47:39,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:47:39,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:39,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:47:39,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:47:39,754 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 138 [2020-10-16 01:47:39,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 60 flow. Second operand 4 states. [2020-10-16 01:47:39,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:39,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 138 [2020-10-16 01:47:39,755 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:39,787 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2020-10-16 01:47:39,787 INFO L130 PetriNetUnfolder]: For 4/5 co-relation queries the response was YES. [2020-10-16 01:47:39,787 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 27 events. 0/27 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:47:39,788 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 1 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 01:47:39,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 75 flow [2020-10-16 01:47:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:47:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:47:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2020-10-16 01:47:39,792 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8387681159420289 [2020-10-16 01:47:39,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2020-10-16 01:47:39,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2020-10-16 01:47:39,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:39,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2020-10-16 01:47:39,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:47:39,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:47:39,797 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:47:39,797 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 60 flow. Second operand 4 states and 463 transitions. [2020-10-16 01:47:39,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 75 flow [2020-10-16 01:47:39,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 69 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:47:39,799 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 70 flow [2020-10-16 01:47:39,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2020-10-16 01:47:39,799 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2020-10-16 01:47:39,800 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 70 flow [2020-10-16 01:47:39,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:47:39,800 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:39,800 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:39,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:47:39,801 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash -985104395, now seen corresponding path program 1 times [2020-10-16 01:47:39,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:39,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988693743] [2020-10-16 01:47:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:39,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988693743] [2020-10-16 01:47:39,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:39,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:47:39,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581483763] [2020-10-16 01:47:39,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:47:39,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:47:39,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:47:39,888 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2020-10-16 01:47:39,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:47:39,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:39,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2020-10-16 01:47:39,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:39,911 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2020-10-16 01:47:39,911 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-16 01:47:39,912 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 30 events. 0/30 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:47:39,912 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 1 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 01:47:39,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 82 flow [2020-10-16 01:47:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:47:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:47:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2020-10-16 01:47:39,915 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8242753623188406 [2020-10-16 01:47:39,915 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2020-10-16 01:47:39,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2020-10-16 01:47:39,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:39,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2020-10-16 01:47:39,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:47:39,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:47:39,918 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:47:39,918 INFO L185 Difference]: Start difference. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states and 455 transitions. [2020-10-16 01:47:39,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 82 flow [2020-10-16 01:47:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 68 flow, removed 2 selfloop flow, removed 5 redundant places. [2020-10-16 01:47:39,920 INFO L241 Difference]: Finished difference. Result has 38 places, 22 transitions, 70 flow [2020-10-16 01:47:39,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2020-10-16 01:47:39,921 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2020-10-16 01:47:39,921 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 70 flow [2020-10-16 01:47:39,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:47:39,921 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:39,921 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:39,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:47:39,922 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:39,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:39,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1125705331, now seen corresponding path program 1 times [2020-10-16 01:47:39,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:39,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933828527] [2020-10-16 01:47:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:39,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933828527] [2020-10-16 01:47:39,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:39,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:47:39,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579532564] [2020-10-16 01:47:39,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:47:39,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:39,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:47:39,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:47:39,975 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2020-10-16 01:47:39,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states. [2020-10-16 01:47:39,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:39,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2020-10-16 01:47:39,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:40,004 INFO L129 PetriNetUnfolder]: 0/33 cut-off events. [2020-10-16 01:47:40,004 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2020-10-16 01:47:40,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 33 events. 0/33 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:47:40,005 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 1 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2020-10-16 01:47:40,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 23 transitions, 82 flow [2020-10-16 01:47:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:47:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:47:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2020-10-16 01:47:40,007 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8242753623188406 [2020-10-16 01:47:40,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2020-10-16 01:47:40,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2020-10-16 01:47:40,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:40,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2020-10-16 01:47:40,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:47:40,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:47:40,010 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:47:40,011 INFO L185 Difference]: Start difference. First operand has 38 places, 22 transitions, 70 flow. Second operand 4 states and 455 transitions. [2020-10-16 01:47:40,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 23 transitions, 82 flow [2020-10-16 01:47:40,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 70 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:47:40,013 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 72 flow [2020-10-16 01:47:40,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2020-10-16 01:47:40,013 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2020-10-16 01:47:40,013 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 72 flow [2020-10-16 01:47:40,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:47:40,013 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:47:40,014 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:47:40,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:47:40,014 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:47:40,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:47:40,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1609242885, now seen corresponding path program 1 times [2020-10-16 01:47:40,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:47:40,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668910123] [2020-10-16 01:47:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:47:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:47:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:47:40,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668910123] [2020-10-16 01:47:40,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:47:40,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:47:40,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967321970] [2020-10-16 01:47:40,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:47:40,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:47:40,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:47:40,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:47:40,072 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 138 [2020-10-16 01:47:40,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 72 flow. Second operand 4 states. [2020-10-16 01:47:40,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:47:40,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 138 [2020-10-16 01:47:40,073 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:47:40,088 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2020-10-16 01:47:40,088 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 01:47:40,088 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 21 events. 0/21 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 01:47:40,089 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-10-16 01:47:40,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 21 transitions, 70 flow [2020-10-16 01:47:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:47:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:47:40,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 453 transitions. [2020-10-16 01:47:40,091 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8206521739130435 [2020-10-16 01:47:40,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 453 transitions. [2020-10-16 01:47:40,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 453 transitions. [2020-10-16 01:47:40,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:47:40,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 453 transitions. [2020-10-16 01:47:40,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:47:40,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:47:40,095 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:47:40,095 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 72 flow. Second operand 4 states and 453 transitions. [2020-10-16 01:47:40,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 21 transitions, 70 flow [2020-10-16 01:47:40,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 21 transitions, 60 flow, removed 0 selfloop flow, removed 5 redundant places. [2020-10-16 01:47:40,096 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:47:40,097 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 01:47:40,097 INFO L342 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2020-10-16 01:47:40,097 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:47:40,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:47:40,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:47:40,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:47:40 BasicIcfg [2020-10-16 01:47:40,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:47:40,106 INFO L168 Benchmark]: Toolchain (without parser) took 4042.12 ms. Allocated memory was 249.0 MB in the beginning and 368.1 MB in the end (delta: 119.0 MB). Free memory was 204.3 MB in the beginning and 257.4 MB in the end (delta: -53.2 MB). Peak memory consumption was 65.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,107 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 249.0 MB. Free memory was 227.1 MB in the beginning and 226.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.07 ms. Allocated memory was 249.0 MB in the beginning and 308.3 MB in the end (delta: 59.2 MB). Free memory was 203.5 MB in the beginning and 263.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.84 ms. Allocated memory is still 308.3 MB. Free memory was 263.3 MB in the beginning and 261.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,109 INFO L168 Benchmark]: Boogie Preprocessor took 29.28 ms. Allocated memory is still 308.3 MB. Free memory was 261.6 MB in the beginning and 259.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,110 INFO L168 Benchmark]: RCFGBuilder took 485.75 ms. Allocated memory is still 308.3 MB. Free memory was 259.9 MB in the beginning and 234.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,111 INFO L168 Benchmark]: TraceAbstraction took 2748.67 ms. Allocated memory was 308.3 MB in the beginning and 368.1 MB in the end (delta: 59.8 MB). Free memory was 234.4 MB in the beginning and 257.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:47:40,116 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 249.0 MB. Free memory was 227.1 MB in the beginning and 226.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 721.07 ms. Allocated memory was 249.0 MB in the beginning and 308.3 MB in the end (delta: 59.2 MB). Free memory was 203.5 MB in the beginning and 263.3 MB in the end (delta: -59.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.84 ms. Allocated memory is still 308.3 MB. Free memory was 263.3 MB in the beginning and 261.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.28 ms. Allocated memory is still 308.3 MB. Free memory was 261.6 MB in the beginning and 259.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 485.75 ms. Allocated memory is still 308.3 MB. Free memory was 259.9 MB in the beginning and 234.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2748.67 ms. Allocated memory was 308.3 MB in the beginning and 368.1 MB in the end (delta: 59.8 MB). Free memory was 234.4 MB in the beginning and 257.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 987 VarBasedMoverChecksPositive, 62 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 174 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 81 PlacesBefore, 35 PlacesAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 3412 MoverChecksTotal - 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. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 15 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 19 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 2395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...