/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:44:02,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:44:02,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:44:02,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:44:02,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:44:02,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:44:02,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:44:02,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:44:02,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:44:02,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:44:02,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:44:02,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:44:02,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:44:02,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:44:02,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:44:02,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:44:02,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:44:02,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:44:02,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:44:02,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:44:02,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:44:02,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:44:02,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:44:02,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:44:02,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:44:02,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:44:02,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:44:02,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:44:02,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:44:02,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:44:02,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:44:02,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:44:02,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:44:02,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:44:02,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:44:02,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:44:02,701 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 01:44:02,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:44:02,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:44:02,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:44:02,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:44:02,747 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:44:02,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:44:02,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:44:02,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:44:02,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:44:02,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:44:02,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:44:02,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:44:02,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:44:02,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:44:02,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:44:02,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:44:02,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:44:02,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:44:02,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:44:02,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:44:02,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:44:02,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:44:02,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:44:02,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:44:02,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:44:02,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:44:02,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:44:02,753 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:44:02,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:44:03,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:44:03,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:44:03,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:44:03,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:44:03,044 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:44:03,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-10-16 01:44:03,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2909d3c8/4105afcba3a944898ef17980c443be50/FLAG15a1a3ab4 [2020-10-16 01:44:03,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:44:03,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-10-16 01:44:03,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2909d3c8/4105afcba3a944898ef17980c443be50/FLAG15a1a3ab4 [2020-10-16 01:44:04,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2909d3c8/4105afcba3a944898ef17980c443be50 [2020-10-16 01:44:04,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:44:04,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:44:04,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:04,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:44:04,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:44:04,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de7132b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04, skipping insertion in model container [2020-10-16 01:44:04,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:44:04,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:44:04,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:04,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:44:04,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:04,725 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:44:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04 WrapperNode [2020-10-16 01:44:04,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:04,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:04,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:44:04,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:44:04,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:04,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:44:04,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:44:04,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:44:04,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (1/1) ... [2020-10-16 01:44:04,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:44:04,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:44:04,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:44:04,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:44:04,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (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 01:44:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:44:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:44:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:44:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:44:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:44:04,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:44:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:44:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:44:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:44:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:44:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:44:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:44:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:44:04,869 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 01:44:05,187 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:44:05,188 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:44:05,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:05 BoogieIcfgContainer [2020-10-16 01:44:05,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:44:05,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:44:05,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:44:05,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:44:05,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:04" (1/3) ... [2020-10-16 01:44:05,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec615d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:05, skipping insertion in model container [2020-10-16 01:44:05,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:04" (2/3) ... [2020-10-16 01:44:05,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec615d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:05, skipping insertion in model container [2020-10-16 01:44:05,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:05" (3/3) ... [2020-10-16 01:44:05,202 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-10-16 01:44:05,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:44:05,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:44:05,221 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:44:05,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,258 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,259 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,265 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,267 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,268 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:05,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:44:05,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:44:05,311 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:44:05,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:44:05,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:44:05,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:44:05,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:44:05,312 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:44:05,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:44:05,325 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:44:05,385 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 01:44:05,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:05,396 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 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. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:44:05,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:44:05,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:05,410 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:44:05,412 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:05,414 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:05,414 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions, 117 flow [2020-10-16 01:44:05,432 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-16 01:44:05,432 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:05,433 INFO L80 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 01:44:05,435 INFO L117 LiptonReduction]: Number of co-enabled transitions 804 [2020-10-16 01:44:06,869 INFO L132 LiptonReduction]: Checked pairs total: 1445 [2020-10-16 01:44:06,870 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:44:06,872 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1464 [2020-10-16 01:44:06,880 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:44:06,881 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:06,881 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:06,882 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:06,883 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:06,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1855988377, now seen corresponding path program 1 times [2020-10-16 01:44:06,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:06,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820555374] [2020-10-16 01:44:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:07,091 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 01:44:07,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820555374] [2020-10-16 01:44:07,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:07,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:07,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239115405] [2020-10-16 01:44:07,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:07,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:07,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:07,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:07,125 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2020-10-16 01:44:07,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:44:07,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:07,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2020-10-16 01:44:07,128 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:07,162 INFO L129 PetriNetUnfolder]: 12/42 cut-off events. [2020-10-16 01:44:07,163 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:07,163 INFO L80 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 107 event pairs, 2 based on Foata normal form. 8/47 useless extension candidates. Maximal degree in co-relation 69. Up to 25 conditions per place. [2020-10-16 01:44:07,165 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 5 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:44:07,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 63 flow [2020-10-16 01:44:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2020-10-16 01:44:07,181 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8515151515151516 [2020-10-16 01:44:07,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2020-10-16 01:44:07,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2020-10-16 01:44:07,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:07,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2020-10-16 01:44:07,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:07,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:07,198 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:07,200 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 281 transitions. [2020-10-16 01:44:07,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 63 flow [2020-10-16 01:44:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:44:07,206 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2020-10-16 01:44:07,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 01:44:07,210 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 01:44:07,210 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2020-10-16 01:44:07,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:07,211 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:07,211 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:07,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:44:07,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:07,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1701065286, now seen corresponding path program 1 times [2020-10-16 01:44:07,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:07,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204749698] [2020-10-16 01:44:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:07,302 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 01:44:07,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204749698] [2020-10-16 01:44:07,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:07,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:07,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637611539] [2020-10-16 01:44:07,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:07,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:07,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:07,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:07,307 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 110 [2020-10-16 01:44:07,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states. [2020-10-16 01:44:07,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:07,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 110 [2020-10-16 01:44:07,307 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:07,319 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:44:07,319 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 01:44:07,320 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 24 events. 3/24 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 01:44:07,320 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 1 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2020-10-16 01:44:07,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 63 flow [2020-10-16 01:44:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 01:44:07,324 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2020-10-16 01:44:07,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 01:44:07,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 01:44:07,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:07,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 01:44:07,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:07,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:07,328 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:07,328 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 277 transitions. [2020-10-16 01:44:07,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 63 flow [2020-10-16 01:44:07,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:44:07,330 INFO L241 Difference]: Finished difference. Result has 28 places, 18 transitions, 62 flow [2020-10-16 01:44:07,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2020-10-16 01:44:07,331 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2020-10-16 01:44:07,331 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 62 flow [2020-10-16 01:44:07,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:07,331 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:07,331 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:07,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:44:07,332 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:07,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1193417040, now seen corresponding path program 1 times [2020-10-16 01:44:07,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:07,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926431691] [2020-10-16 01:44:07,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:07,449 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 01:44:07,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926431691] [2020-10-16 01:44:07,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:07,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:07,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455965328] [2020-10-16 01:44:07,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:07,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:07,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:07,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:07,454 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 110 [2020-10-16 01:44:07,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 62 flow. Second operand 4 states. [2020-10-16 01:44:07,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:07,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 110 [2020-10-16 01:44:07,455 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:07,529 INFO L129 PetriNetUnfolder]: 41/94 cut-off events. [2020-10-16 01:44:07,529 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2020-10-16 01:44:07,530 INFO L80 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 94 events. 41/94 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 355 event pairs, 17 based on Foata normal form. 10/93 useless extension candidates. Maximal degree in co-relation 209. Up to 60 conditions per place. [2020-10-16 01:44:07,531 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 7 selfloop transitions, 7 changer transitions 2/28 dead transitions. [2020-10-16 01:44:07,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 114 flow [2020-10-16 01:44:07,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:44:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:44:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2020-10-16 01:44:07,535 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2020-10-16 01:44:07,535 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2020-10-16 01:44:07,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2020-10-16 01:44:07,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:07,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2020-10-16 01:44:07,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:44:07,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:44:07,556 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:44:07,556 INFO L185 Difference]: Start difference. First operand has 28 places, 18 transitions, 62 flow. Second operand 5 states and 403 transitions. [2020-10-16 01:44:07,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 114 flow [2020-10-16 01:44:07,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:07,558 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 112 flow [2020-10-16 01:44:07,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2020-10-16 01:44:07,559 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2020-10-16 01:44:07,559 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 112 flow [2020-10-16 01:44:07,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:07,559 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:07,559 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:07,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:44:07,560 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1644011429, now seen corresponding path program 1 times [2020-10-16 01:44:07,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:07,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808520763] [2020-10-16 01:44:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:07,611 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 01:44:07,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808520763] [2020-10-16 01:44:07,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:07,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:07,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436899263] [2020-10-16 01:44:07,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:07,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:07,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:07,615 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 110 [2020-10-16 01:44:07,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 112 flow. Second operand 4 states. [2020-10-16 01:44:07,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:07,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 110 [2020-10-16 01:44:07,616 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:07,668 INFO L129 PetriNetUnfolder]: 68/164 cut-off events. [2020-10-16 01:44:07,668 INFO L130 PetriNetUnfolder]: For 347/389 co-relation queries the response was YES. [2020-10-16 01:44:07,670 INFO L80 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 164 events. 68/164 cut-off events. For 347/389 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 791 event pairs, 24 based on Foata normal form. 24/176 useless extension candidates. Maximal degree in co-relation 490. Up to 113 conditions per place. [2020-10-16 01:44:07,672 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 5 selfloop transitions, 4 changer transitions 1/27 dead transitions. [2020-10-16 01:44:07,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 143 flow [2020-10-16 01:44:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 01:44:07,674 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7977272727272727 [2020-10-16 01:44:07,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 01:44:07,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 01:44:07,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:07,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 01:44:07,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:07,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:07,678 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:07,678 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 112 flow. Second operand 4 states and 351 transitions. [2020-10-16 01:44:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 143 flow [2020-10-16 01:44:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:44:07,681 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 121 flow [2020-10-16 01:44:07,682 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2020-10-16 01:44:07,682 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2020-10-16 01:44:07,682 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 121 flow [2020-10-16 01:44:07,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:07,682 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:07,683 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:07,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:44:07,683 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:07,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1228459905, now seen corresponding path program 2 times [2020-10-16 01:44:07,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:07,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959829280] [2020-10-16 01:44:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:07,760 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 01:44:07,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959829280] [2020-10-16 01:44:07,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:07,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:07,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590629604] [2020-10-16 01:44:07,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:44:07,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:07,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:44:07,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:44:07,764 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 110 [2020-10-16 01:44:07,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 121 flow. Second operand 5 states. [2020-10-16 01:44:07,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:07,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 110 [2020-10-16 01:44:07,765 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:07,846 INFO L129 PetriNetUnfolder]: 25/80 cut-off events. [2020-10-16 01:44:07,847 INFO L130 PetriNetUnfolder]: For 265/341 co-relation queries the response was YES. [2020-10-16 01:44:07,848 INFO L80 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 80 events. 25/80 cut-off events. For 265/341 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 300 event pairs, 3 based on Foata normal form. 39/114 useless extension candidates. Maximal degree in co-relation 288. Up to 54 conditions per place. [2020-10-16 01:44:07,848 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 5 selfloop transitions, 13 changer transitions 4/34 dead transitions. [2020-10-16 01:44:07,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 223 flow [2020-10-16 01:44:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:44:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:44:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 563 transitions. [2020-10-16 01:44:07,851 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7311688311688311 [2020-10-16 01:44:07,852 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 563 transitions. [2020-10-16 01:44:07,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 563 transitions. [2020-10-16 01:44:07,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:07,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 563 transitions. [2020-10-16 01:44:07,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:44:07,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:44:07,855 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:44:07,856 INFO L185 Difference]: Start difference. First operand has 36 places, 24 transitions, 121 flow. Second operand 7 states and 563 transitions. [2020-10-16 01:44:07,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 223 flow [2020-10-16 01:44:07,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 213 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 01:44:07,859 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 199 flow [2020-10-16 01:44:07,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2020-10-16 01:44:07,860 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2020-10-16 01:44:07,860 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 199 flow [2020-10-16 01:44:07,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:44:07,860 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:07,860 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:07,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:44:07,861 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:07,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:07,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1540905504, now seen corresponding path program 1 times [2020-10-16 01:44:07,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:07,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392336349] [2020-10-16 01:44:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:07,933 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 01:44:07,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392336349] [2020-10-16 01:44:07,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:07,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:44:07,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681053514] [2020-10-16 01:44:07,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:44:07,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:07,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:44:07,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:44:07,936 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 110 [2020-10-16 01:44:07,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 199 flow. Second operand 6 states. [2020-10-16 01:44:07,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:07,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 110 [2020-10-16 01:44:07,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:08,031 INFO L129 PetriNetUnfolder]: 13/62 cut-off events. [2020-10-16 01:44:08,031 INFO L130 PetriNetUnfolder]: For 323/422 co-relation queries the response was YES. [2020-10-16 01:44:08,032 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 62 events. 13/62 cut-off events. For 323/422 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 228 event pairs, 0 based on Foata normal form. 50/108 useless extension candidates. Maximal degree in co-relation 275. Up to 43 conditions per place. [2020-10-16 01:44:08,033 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 2 selfloop transitions, 17 changer transitions 3/34 dead transitions. [2020-10-16 01:44:08,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 275 flow [2020-10-16 01:44:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 01:44:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-16 01:44:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 717 transitions. [2020-10-16 01:44:08,036 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7242424242424242 [2020-10-16 01:44:08,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 717 transitions. [2020-10-16 01:44:08,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 717 transitions. [2020-10-16 01:44:08,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:08,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 717 transitions. [2020-10-16 01:44:08,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-16 01:44:08,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-16 01:44:08,041 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-16 01:44:08,041 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 199 flow. Second operand 9 states and 717 transitions. [2020-10-16 01:44:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 275 flow [2020-10-16 01:44:08,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 245 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:08,045 INFO L241 Difference]: Finished difference. Result has 51 places, 31 transitions, 225 flow [2020-10-16 01:44:08,045 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2020-10-16 01:44:08,045 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2020-10-16 01:44:08,046 INFO L481 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 225 flow [2020-10-16 01:44:08,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:44:08,046 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:08,046 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:08,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:44:08,046 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:08,047 INFO L82 PathProgramCache]: Analyzing trace with hash 994316829, now seen corresponding path program 1 times [2020-10-16 01:44:08,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:08,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138462317] [2020-10-16 01:44:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:08,081 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 01:44:08,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138462317] [2020-10-16 01:44:08,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:08,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:08,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393384391] [2020-10-16 01:44:08,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:08,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:08,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:08,085 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 110 [2020-10-16 01:44:08,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 225 flow. Second operand 4 states. [2020-10-16 01:44:08,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:08,086 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 110 [2020-10-16 01:44:08,086 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:08,122 INFO L129 PetriNetUnfolder]: 28/126 cut-off events. [2020-10-16 01:44:08,122 INFO L130 PetriNetUnfolder]: For 613/666 co-relation queries the response was YES. [2020-10-16 01:44:08,123 INFO L80 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 126 events. 28/126 cut-off events. For 613/666 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 712 event pairs, 0 based on Foata normal form. 12/130 useless extension candidates. Maximal degree in co-relation 518. Up to 55 conditions per place. [2020-10-16 01:44:08,124 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 3 selfloop transitions, 2 changer transitions 11/33 dead transitions. [2020-10-16 01:44:08,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 33 transitions, 251 flow [2020-10-16 01:44:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:44:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:44:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2020-10-16 01:44:08,126 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7927272727272727 [2020-10-16 01:44:08,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2020-10-16 01:44:08,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2020-10-16 01:44:08,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:08,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2020-10-16 01:44:08,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:44:08,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:44:08,129 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:44:08,129 INFO L185 Difference]: Start difference. First operand has 51 places, 31 transitions, 225 flow. Second operand 5 states and 436 transitions. [2020-10-16 01:44:08,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 33 transitions, 251 flow [2020-10-16 01:44:08,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 193 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-16 01:44:08,134 INFO L241 Difference]: Finished difference. Result has 49 places, 22 transitions, 124 flow [2020-10-16 01:44:08,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=49, PETRI_TRANSITIONS=22} [2020-10-16 01:44:08,135 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2020-10-16 01:44:08,135 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 22 transitions, 124 flow [2020-10-16 01:44:08,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:08,135 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:08,135 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:08,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:44:08,136 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:08,136 INFO L82 PathProgramCache]: Analyzing trace with hash 286853173, now seen corresponding path program 2 times [2020-10-16 01:44:08,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:08,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118635072] [2020-10-16 01:44:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:08,166 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 01:44:08,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118635072] [2020-10-16 01:44:08,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:08,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:08,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499692027] [2020-10-16 01:44:08,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:08,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:08,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:08,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:08,169 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 110 [2020-10-16 01:44:08,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 22 transitions, 124 flow. Second operand 4 states. [2020-10-16 01:44:08,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:08,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 110 [2020-10-16 01:44:08,170 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:08,182 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-10-16 01:44:08,182 INFO L130 PetriNetUnfolder]: For 64/67 co-relation queries the response was YES. [2020-10-16 01:44:08,182 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 24 events. 5/24 cut-off events. For 64/67 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-16 01:44:08,183 INFO L132 encePairwiseOnDemand]: 107/110 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2020-10-16 01:44:08,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 21 transitions, 110 flow [2020-10-16 01:44:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:08,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2020-10-16 01:44:08,184 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8 [2020-10-16 01:44:08,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2020-10-16 01:44:08,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2020-10-16 01:44:08,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:08,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2020-10-16 01:44:08,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:08,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:08,187 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:08,187 INFO L185 Difference]: Start difference. First operand has 49 places, 22 transitions, 124 flow. Second operand 4 states and 352 transitions. [2020-10-16 01:44:08,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 21 transitions, 110 flow [2020-10-16 01:44:08,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 21 transitions, 100 flow, removed 1 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:08,189 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2020-10-16 01:44:08,189 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=40, PETRI_TRANSITIONS=0} [2020-10-16 01:44:08,189 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2020-10-16 01:44:08,189 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2020-10-16 01:44:08,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:08,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:44:08,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:08 BasicIcfg [2020-10-16 01:44:08,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:44:08,196 INFO L168 Benchmark]: Toolchain (without parser) took 4113.65 ms. Allocated memory was 254.3 MB in the beginning and 374.9 MB in the end (delta: 120.6 MB). Free memory was 209.5 MB in the beginning and 236.5 MB in the end (delta: -27.0 MB). Peak memory consumption was 93.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,197 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 254.3 MB. Free memory was 232.3 MB in the beginning and 231.5 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.08 ms. Allocated memory was 254.3 MB in the beginning and 323.5 MB in the end (delta: 69.2 MB). Free memory was 209.5 MB in the beginning and 278.2 MB in the end (delta: -68.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 323.5 MB. Free memory was 278.2 MB in the beginning and 275.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,200 INFO L168 Benchmark]: Boogie Preprocessor took 25.68 ms. Allocated memory is still 323.5 MB. Free memory was 275.1 MB in the beginning and 273.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,200 INFO L168 Benchmark]: RCFGBuilder took 390.07 ms. Allocated memory is still 323.5 MB. Free memory was 273.4 MB in the beginning and 251.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,201 INFO L168 Benchmark]: TraceAbstraction took 3002.48 ms. Allocated memory was 323.5 MB in the beginning and 374.9 MB in the end (delta: 51.4 MB). Free memory was 250.5 MB in the beginning and 236.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 65.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:08,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 254.3 MB. Free memory was 232.3 MB in the beginning and 231.5 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 645.08 ms. Allocated memory was 254.3 MB in the beginning and 323.5 MB in the end (delta: 69.2 MB). Free memory was 209.5 MB in the beginning and 278.2 MB in the end (delta: -68.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.01 ms. Allocated memory is still 323.5 MB. Free memory was 278.2 MB in the beginning and 275.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.68 ms. Allocated memory is still 323.5 MB. Free memory was 275.1 MB in the beginning and 273.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 390.07 ms. Allocated memory is still 323.5 MB. Free memory was 273.4 MB in the beginning and 251.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3002.48 ms. Allocated memory was 323.5 MB in the beginning and 374.9 MB in the end (delta: 51.4 MB). Free memory was 250.5 MB in the beginning and 236.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 65.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 554 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 63 PlacesBefore, 26 PlacesAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1445 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, 67 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: 1.5s, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 15 SDs, 0 SdLazy, 105 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=6, 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, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2822 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...