/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/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:45:26,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:45:26,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:45:26,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:45:26,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:45:26,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:45:26,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:45:26,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:45:26,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:45:26,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:45:26,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:45:26,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:45:26,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:45:26,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:45:26,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:45:26,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:45:26,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:45:26,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:45:26,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:45:26,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:45:26,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:45:26,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:45:26,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:45:26,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:45:26,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:45:26,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:45:26,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:45:26,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:45:26,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:45:26,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:45:26,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:45:26,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:45:26,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:45:26,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:45:26,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:45:26,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:45:26,752 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 01:45:26,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:45:26,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:45:26,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:45:26,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:45:26,807 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:45:26,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:45:26,807 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:45:26,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:45:26,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:45:26,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:45:26,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:45:26,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:45:26,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:45:26,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:45:26,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:45:26,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:45:26,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:45:26,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:45:26,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:45:26,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:45:26,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:45:26,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:45:26,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:45:26,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:45:26,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:45:26,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:45:26,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:45:26,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:45:26,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:45:27,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:45:27,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:45:27,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:45:27,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:45:27,167 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:45:27,168 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-16 01:45:27,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52be918af/47cf264b5e3f42b8af2a358d3b7e2f2c/FLAG62ed91658 [2020-10-16 01:45:27,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:45:27,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-10-16 01:45:27,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52be918af/47cf264b5e3f42b8af2a358d3b7e2f2c/FLAG62ed91658 [2020-10-16 01:45:28,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52be918af/47cf264b5e3f42b8af2a358d3b7e2f2c [2020-10-16 01:45:28,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:45:28,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:45:28,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:28,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:45:28,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:45:28,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571cca8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28, skipping insertion in model container [2020-10-16 01:45:28,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:45:28,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:45:28,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:28,556 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:45:28,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:28,700 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:45:28,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28 WrapperNode [2020-10-16 01:45:28,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:28,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:28,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:45:28,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:45:28,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:28,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:45:28,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:45:28,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:45:28,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (1/1) ... [2020-10-16 01:45:28,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:45:28,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:45:28,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:45:28,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:45:28,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (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 01:45:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:45:28,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:45:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:45:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:45:28,855 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:45:28,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:45:28,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:45:28,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:45:28,856 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:45:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:45:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:45:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:45:28,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:45:28,860 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 01:45:29,184 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:45:29,184 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:45:29,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:29 BoogieIcfgContainer [2020-10-16 01:45:29,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:45:29,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:45:29,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:45:29,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:45:29,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:45:28" (1/3) ... [2020-10-16 01:45:29,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1bb7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:29, skipping insertion in model container [2020-10-16 01:45:29,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:28" (2/3) ... [2020-10-16 01:45:29,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1bb7ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:29, skipping insertion in model container [2020-10-16 01:45:29,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:29" (3/3) ... [2020-10-16 01:45:29,196 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-10-16 01:45:29,211 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:45:29,219 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:45:29,220 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:45:29,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,252 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,253 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,255 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,255 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,257 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,257 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,257 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,257 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,270 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:29,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:45:29,331 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:45:29,331 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:45:29,331 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:45:29,331 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:45:29,332 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:45:29,332 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:45:29,332 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:45:29,332 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:45:29,347 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:45:29,398 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:45:29,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:29,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:45:29,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:45:29,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:29,413 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:45:29,416 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:29,418 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:29,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:45:29,438 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:45:29,439 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:29,440 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:45:29,442 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:45:30,808 INFO L132 LiptonReduction]: Checked pairs total: 1588 [2020-10-16 01:45:30,808 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:45:30,811 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1400 [2020-10-16 01:45:30,819 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:45:30,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:30,820 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:30,821 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:30,821 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:30,827 INFO L82 PathProgramCache]: Analyzing trace with hash 98967, now seen corresponding path program 1 times [2020-10-16 01:45:30,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:30,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631242899] [2020-10-16 01:45:30,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:31,133 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 01:45:31,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631242899] [2020-10-16 01:45:31,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:31,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:45:31,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110633438] [2020-10-16 01:45:31,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:31,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:31,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:31,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:31,163 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 01:45:31,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:45:31,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:31,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 01:45:31,167 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:31,189 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:45:31,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:31,190 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2020-10-16 01:45:31,191 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:45:31,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 01:45:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2020-10-16 01:45:31,208 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2020-10-16 01:45:31,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2020-10-16 01:45:31,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2020-10-16 01:45:31,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:31,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2020-10-16 01:45:31,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:31,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:31,225 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:31,227 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 288 transitions. [2020-10-16 01:45:31,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 01:45:31,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:45:31,233 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 01:45:31,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 01:45:31,237 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:45:31,237 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 01:45:31,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:31,237 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:31,237 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:31,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:45:31,238 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:31,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:31,239 INFO L82 PathProgramCache]: Analyzing trace with hash 3067560, now seen corresponding path program 1 times [2020-10-16 01:45:31,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:31,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482084653] [2020-10-16 01:45:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:31,287 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 01:45:31,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482084653] [2020-10-16 01:45:31,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:31,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:45:31,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346323305] [2020-10-16 01:45:31,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:31,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:31,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:31,293 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 01:45:31,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:45:31,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:31,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 01:45:31,293 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:31,316 INFO L129 PetriNetUnfolder]: 11/42 cut-off events. [2020-10-16 01:45:31,316 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2020-10-16 01:45:31,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 42 events. 11/42 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 97 event pairs, 3 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 80. Up to 19 conditions per place. [2020-10-16 01:45:31,317 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 01:45:31,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 75 flow [2020-10-16 01:45:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:45:31,326 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8588588588588588 [2020-10-16 01:45:31,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:45:31,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:45:31,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:31,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:45:31,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:31,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:31,336 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:31,336 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:45:31,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 75 flow [2020-10-16 01:45:31,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:31,338 INFO L241 Difference]: Finished difference. Result has 29 places, 21 transitions, 75 flow [2020-10-16 01:45:31,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2020-10-16 01:45:31,339 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:45:31,340 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 75 flow [2020-10-16 01:45:31,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:31,340 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:31,340 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:31,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:45:31,341 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:31,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash 705012810, now seen corresponding path program 1 times [2020-10-16 01:45:31,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:31,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153357624] [2020-10-16 01:45:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:31,471 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 01:45:31,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153357624] [2020-10-16 01:45:31,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:31,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:31,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82879214] [2020-10-16 01:45:31,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:31,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:31,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:31,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:31,477 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 111 [2020-10-16 01:45:31,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 75 flow. Second operand 4 states. [2020-10-16 01:45:31,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:31,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 111 [2020-10-16 01:45:31,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:31,581 INFO L129 PetriNetUnfolder]: 59/133 cut-off events. [2020-10-16 01:45:31,581 INFO L130 PetriNetUnfolder]: For 113/154 co-relation queries the response was YES. [2020-10-16 01:45:31,585 INFO L80 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 133 events. 59/133 cut-off events. For 113/154 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 553 event pairs, 23 based on Foata normal form. 26/146 useless extension candidates. Maximal degree in co-relation 304. Up to 79 conditions per place. [2020-10-16 01:45:31,587 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 8 selfloop transitions, 8 changer transitions 0/31 dead transitions. [2020-10-16 01:45:31,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 127 flow [2020-10-16 01:45:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:45:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:45:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2020-10-16 01:45:31,590 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7441441441441441 [2020-10-16 01:45:31,590 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2020-10-16 01:45:31,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2020-10-16 01:45:31,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:31,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2020-10-16 01:45:31,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:45:31,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:45:31,596 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:45:31,596 INFO L185 Difference]: Start difference. First operand has 29 places, 21 transitions, 75 flow. Second operand 5 states and 413 transitions. [2020-10-16 01:45:31,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 127 flow [2020-10-16 01:45:31,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:31,599 INFO L241 Difference]: Finished difference. Result has 35 places, 28 transitions, 132 flow [2020-10-16 01:45:31,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2020-10-16 01:45:31,600 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:45:31,600 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 132 flow [2020-10-16 01:45:31,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:31,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:31,600 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:31,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:45:31,601 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1369025118, now seen corresponding path program 1 times [2020-10-16 01:45:31,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:31,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786219154] [2020-10-16 01:45:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:31,670 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 01:45:31,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786219154] [2020-10-16 01:45:31,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:31,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:31,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332456686] [2020-10-16 01:45:31,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:31,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:31,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:31,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:31,677 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 01:45:31,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 132 flow. Second operand 3 states. [2020-10-16 01:45:31,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:31,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 01:45:31,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:31,765 INFO L129 PetriNetUnfolder]: 69/169 cut-off events. [2020-10-16 01:45:31,766 INFO L130 PetriNetUnfolder]: For 421/487 co-relation queries the response was YES. [2020-10-16 01:45:31,767 INFO L80 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 169 events. 69/169 cut-off events. For 421/487 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 861 event pairs, 27 based on Foata normal form. 18/173 useless extension candidates. Maximal degree in co-relation 511. Up to 113 conditions per place. [2020-10-16 01:45:31,769 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2020-10-16 01:45:31,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 144 flow [2020-10-16 01:45:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2020-10-16 01:45:31,771 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8558558558558559 [2020-10-16 01:45:31,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2020-10-16 01:45:31,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2020-10-16 01:45:31,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:31,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2020-10-16 01:45:31,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:31,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:31,774 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:31,774 INFO L185 Difference]: Start difference. First operand has 35 places, 28 transitions, 132 flow. Second operand 3 states and 285 transitions. [2020-10-16 01:45:31,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 144 flow [2020-10-16 01:45:31,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:31,778 INFO L241 Difference]: Finished difference. Result has 37 places, 27 transitions, 133 flow [2020-10-16 01:45:31,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2020-10-16 01:45:31,778 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:45:31,778 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 133 flow [2020-10-16 01:45:31,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:31,779 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:31,779 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:31,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:45:31,779 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:31,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:31,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1089339716, now seen corresponding path program 1 times [2020-10-16 01:45:31,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:31,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904571253] [2020-10-16 01:45:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:31,818 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 01:45:31,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904571253] [2020-10-16 01:45:31,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:31,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:31,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738241827] [2020-10-16 01:45:31,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:45:31,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:31,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:45:31,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:45:31,822 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 111 [2020-10-16 01:45:31,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 133 flow. Second operand 5 states. [2020-10-16 01:45:31,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:31,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 111 [2020-10-16 01:45:31,823 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:31,894 INFO L129 PetriNetUnfolder]: 44/137 cut-off events. [2020-10-16 01:45:31,895 INFO L130 PetriNetUnfolder]: For 405/559 co-relation queries the response was YES. [2020-10-16 01:45:31,896 INFO L80 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 137 events. 44/137 cut-off events. For 405/559 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 680 event pairs, 4 based on Foata normal form. 68/200 useless extension candidates. Maximal degree in co-relation 496. Up to 100 conditions per place. [2020-10-16 01:45:31,897 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 13 changer transitions 4/37 dead transitions. [2020-10-16 01:45:31,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 235 flow [2020-10-16 01:45:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:45:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:45:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 577 transitions. [2020-10-16 01:45:31,900 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7425997425997426 [2020-10-16 01:45:31,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 577 transitions. [2020-10-16 01:45:31,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 577 transitions. [2020-10-16 01:45:31,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:31,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 577 transitions. [2020-10-16 01:45:31,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:45:31,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:45:31,904 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:45:31,904 INFO L185 Difference]: Start difference. First operand has 37 places, 27 transitions, 133 flow. Second operand 7 states and 577 transitions. [2020-10-16 01:45:31,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 235 flow [2020-10-16 01:45:31,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 230 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:31,908 INFO L241 Difference]: Finished difference. Result has 45 places, 33 transitions, 216 flow [2020-10-16 01:45:31,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2020-10-16 01:45:31,909 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 01:45:31,909 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 216 flow [2020-10-16 01:45:31,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:45:31,909 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:31,909 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:31,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:45:31,910 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:31,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1526086825, now seen corresponding path program 1 times [2020-10-16 01:45:31,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:31,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785529174] [2020-10-16 01:45:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:31,934 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 01:45:31,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785529174] [2020-10-16 01:45:31,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:31,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:31,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790811843] [2020-10-16 01:45:31,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:31,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:31,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:31,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:31,937 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 01:45:31,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 216 flow. Second operand 3 states. [2020-10-16 01:45:31,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:31,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 01:45:31,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:31,969 INFO L129 PetriNetUnfolder]: 43/156 cut-off events. [2020-10-16 01:45:31,970 INFO L130 PetriNetUnfolder]: For 773/865 co-relation queries the response was YES. [2020-10-16 01:45:31,971 INFO L80 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 156 events. 43/156 cut-off events. For 773/865 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 900 event pairs, 5 based on Foata normal form. 16/164 useless extension candidates. Maximal degree in co-relation 651. Up to 121 conditions per place. [2020-10-16 01:45:31,972 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 6/33 dead transitions. [2020-10-16 01:45:31,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 228 flow [2020-10-16 01:45:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2020-10-16 01:45:31,974 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8558558558558559 [2020-10-16 01:45:31,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2020-10-16 01:45:31,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2020-10-16 01:45:31,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:31,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2020-10-16 01:45:31,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:31,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:31,976 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:31,976 INFO L185 Difference]: Start difference. First operand has 45 places, 33 transitions, 216 flow. Second operand 3 states and 285 transitions. [2020-10-16 01:45:31,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 228 flow [2020-10-16 01:45:31,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 198 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:45:31,982 INFO L241 Difference]: Finished difference. Result has 46 places, 27 transitions, 157 flow [2020-10-16 01:45:31,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2020-10-16 01:45:31,983 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2020-10-16 01:45:31,983 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 157 flow [2020-10-16 01:45:31,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:31,983 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:31,983 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:31,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:45:31,984 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash -132259397, now seen corresponding path program 1 times [2020-10-16 01:45:31,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:31,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136776782] [2020-10-16 01:45:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:32,026 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 01:45:32,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136776782] [2020-10-16 01:45:32,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:32,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:45:32,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864532678] [2020-10-16 01:45:32,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:45:32,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:32,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:45:32,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:45:32,030 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 111 [2020-10-16 01:45:32,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 157 flow. Second operand 6 states. [2020-10-16 01:45:32,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:32,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 111 [2020-10-16 01:45:32,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:32,094 INFO L129 PetriNetUnfolder]: 28/95 cut-off events. [2020-10-16 01:45:32,094 INFO L130 PetriNetUnfolder]: For 361/400 co-relation queries the response was YES. [2020-10-16 01:45:32,095 INFO L80 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 95 events. 28/95 cut-off events. For 361/400 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 389 event pairs, 0 based on Foata normal form. 30/121 useless extension candidates. Maximal degree in co-relation 376. Up to 50 conditions per place. [2020-10-16 01:45:32,096 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 2 selfloop transitions, 10 changer transitions 8/31 dead transitions. [2020-10-16 01:45:32,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 31 transitions, 221 flow [2020-10-16 01:45:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:45:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:45:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 571 transitions. [2020-10-16 01:45:32,099 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7348777348777349 [2020-10-16 01:45:32,099 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 571 transitions. [2020-10-16 01:45:32,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 571 transitions. [2020-10-16 01:45:32,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:32,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 571 transitions. [2020-10-16 01:45:32,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:45:32,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:45:32,103 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:45:32,103 INFO L185 Difference]: Start difference. First operand has 46 places, 27 transitions, 157 flow. Second operand 7 states and 571 transitions. [2020-10-16 01:45:32,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 31 transitions, 221 flow [2020-10-16 01:45:32,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 194 flow, removed 12 selfloop flow, removed 4 redundant places. [2020-10-16 01:45:32,106 INFO L241 Difference]: Finished difference. Result has 47 places, 23 transitions, 150 flow [2020-10-16 01:45:32,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=47, PETRI_TRANSITIONS=23} [2020-10-16 01:45:32,107 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2020-10-16 01:45:32,107 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 23 transitions, 150 flow [2020-10-16 01:45:32,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:45:32,107 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:32,108 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 01:45:32,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:45:32,108 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1762504018, now seen corresponding path program 1 times [2020-10-16 01:45:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:32,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200334486] [2020-10-16 01:45:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:32,142 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 01:45:32,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200334486] [2020-10-16 01:45:32,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:32,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:32,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48573160] [2020-10-16 01:45:32,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:32,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:32,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:32,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:32,145 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2020-10-16 01:45:32,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 23 transitions, 150 flow. Second operand 4 states. [2020-10-16 01:45:32,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:32,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2020-10-16 01:45:32,146 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:32,158 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 01:45:32,159 INFO L130 PetriNetUnfolder]: For 57/61 co-relation queries the response was YES. [2020-10-16 01:45:32,159 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 25 events. 5/25 cut-off events. For 57/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2020-10-16 01:45:32,159 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:45:32,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 22 transitions, 140 flow [2020-10-16 01:45:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:45:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:45:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2020-10-16 01:45:32,161 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2020-10-16 01:45:32,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2020-10-16 01:45:32,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2020-10-16 01:45:32,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:32,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2020-10-16 01:45:32,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:45:32,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:45:32,165 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:45:32,165 INFO L185 Difference]: Start difference. First operand has 47 places, 23 transitions, 150 flow. Second operand 4 states and 360 transitions. [2020-10-16 01:45:32,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 22 transitions, 140 flow [2020-10-16 01:45:32,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 96 flow, removed 6 selfloop flow, removed 11 redundant places. [2020-10-16 01:45:32,166 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:45:32,167 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2020-10-16 01:45:32,167 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:45:32,167 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:45:32,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:32,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:45:32,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:45:32 BasicIcfg [2020-10-16 01:45:32,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:45:32,175 INFO L168 Benchmark]: Toolchain (without parser) took 4143.04 ms. Allocated memory was 250.1 MB in the beginning and 370.1 MB in the end (delta: 120.1 MB). Free memory was 205.4 MB in the beginning and 248.1 MB in the end (delta: -42.6 MB). Peak memory consumption was 77.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:32,175 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:45:32,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.53 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 205.4 MB in the beginning and 266.7 MB in the end (delta: -61.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:32,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 311.4 MB. Free memory was 266.7 MB in the beginning and 264.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:32,178 INFO L168 Benchmark]: Boogie Preprocessor took 27.02 ms. Allocated memory is still 311.4 MB. Free memory was 264.2 MB in the beginning and 261.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:32,178 INFO L168 Benchmark]: RCFGBuilder took 403.76 ms. Allocated memory is still 311.4 MB. Free memory was 261.6 MB in the beginning and 239.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:32,179 INFO L168 Benchmark]: TraceAbstraction took 2983.82 ms. Allocated memory was 311.4 MB in the beginning and 370.1 MB in the end (delta: 58.7 MB). Free memory was 239.8 MB in the beginning and 248.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 50.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:32,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 669.53 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 205.4 MB in the beginning and 266.7 MB in the end (delta: -61.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.42 ms. Allocated memory is still 311.4 MB. Free memory was 266.7 MB in the beginning and 264.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.02 ms. Allocated memory is still 311.4 MB. Free memory was 264.2 MB in the beginning and 261.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 403.76 ms. Allocated memory is still 311.4 MB. Free memory was 261.6 MB in the beginning and 239.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2983.82 ms. Allocated memory was 311.4 MB in the beginning and 370.1 MB in the end (delta: 58.7 MB). Free memory was 239.8 MB in the beginning and 248.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 50.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 628 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 40 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 91 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1588 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 4 procedures, 68 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: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 30 SDtfs, 11 SDslu, 11 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...