/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/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:39:48,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:39:48,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:39:48,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:39:48,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:39:48,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:39:48,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:39:48,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:39:48,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:39:48,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:39:48,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:39:48,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:39:48,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:39:48,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:39:48,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:39:48,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:39:48,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:39:48,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:39:48,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:39:48,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:39:48,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:39:48,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:39:48,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:39:48,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:39:48,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:39:48,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:39:48,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:39:48,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:39:48,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:39:48,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:39:48,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:39:48,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:39:48,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:39:48,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:39:48,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:39:48,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:39:48,674 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 01:39:48,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:39:48,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:39:48,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:39:48,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:39:48,697 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:39:48,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:39:48,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:39:48,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:39:48,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:39:48,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:39:48,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:39:48,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:39:48,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:39:48,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:39:48,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:39:48,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:39:48,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:39:48,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:39:48,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:39:48,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:39:48,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:39:48,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:39:48,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:39:48,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:39:48,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:39:48,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:39:48,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:39:48,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:39:48,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:39:48,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:39:48,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:39:48,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:39:48,999 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:39:48,999 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:39:49,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-10-16 01:39:49,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a625fb5c/e3a0d043510f429aaeb409ba961bf2c5/FLAG5ebfbfd22 [2020-10-16 01:39:49,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:39:49,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-10-16 01:39:49,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a625fb5c/e3a0d043510f429aaeb409ba961bf2c5/FLAG5ebfbfd22 [2020-10-16 01:39:49,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a625fb5c/e3a0d043510f429aaeb409ba961bf2c5 [2020-10-16 01:39:49,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:39:49,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:39:49,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:49,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:39:49,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:39:49,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:49" (1/1) ... [2020-10-16 01:39:49,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f018203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:49, skipping insertion in model container [2020-10-16 01:39:49,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:49" (1/1) ... [2020-10-16 01:39:49,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:39:49,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:39:50,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:50,471 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:39:50,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:50,622 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:39:50,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50 WrapperNode [2020-10-16 01:39:50,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:50,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:50,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:39:50,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:39:50,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:50,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:39:50,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:39:50,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:39:50,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (1/1) ... [2020-10-16 01:39:50,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:39:50,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:39:50,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:39:50,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:39:50,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (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 01:39:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:39:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:39:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:39:50,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:39:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:39:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:39:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:39:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:39:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:39:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:39:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:39:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:39:50,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:39:50,768 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 01:39:51,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:39:51,084 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:39:51,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:51 BoogieIcfgContainer [2020-10-16 01:39:51,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:39:51,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:39:51,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:39:51,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:39:51,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:49" (1/3) ... [2020-10-16 01:39:51,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec618f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:51, skipping insertion in model container [2020-10-16 01:39:51,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:50" (2/3) ... [2020-10-16 01:39:51,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec618f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:51, skipping insertion in model container [2020-10-16 01:39:51,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:51" (3/3) ... [2020-10-16 01:39:51,095 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-10-16 01:39:51,106 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:39:51,113 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:39:51,114 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:39:51,144 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,144 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,144 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,146 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,146 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,147 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,147 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,147 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,147 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,148 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,149 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,149 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,154 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,154 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,167 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,167 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,170 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,170 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:51,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:39:51,208 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:39:51,208 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:39:51,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:39:51,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:39:51,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:39:51,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:39:51,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:39:51,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:39:51,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:39:51,267 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:39:51,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:51,272 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:39:51,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:39:51,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:51,280 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:39:51,283 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:51,285 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:51,286 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:39:51,304 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:39:51,304 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:51,305 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:39:51,307 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:39:52,544 INFO L132 LiptonReduction]: Checked pairs total: 1702 [2020-10-16 01:39:52,545 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:39:52,547 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1269 [2020-10-16 01:39:52,555 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2020-10-16 01:39:52,555 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:52,556 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:52,557 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:52,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:52,563 INFO L82 PathProgramCache]: Analyzing trace with hash 967519021, now seen corresponding path program 1 times [2020-10-16 01:39:52,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:52,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580213025] [2020-10-16 01:39:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:52,783 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 01:39:52,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580213025] [2020-10-16 01:39:52,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:52,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323229313] [2020-10-16 01:39:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:52,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:52,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:52,808 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:39:52,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:39:52,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:52,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:39:52,812 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:52,828 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:39:52,829 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:52,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:39:52,830 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:39:52,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:39:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:39:52,846 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:39:52,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:39:52,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:39:52,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:52,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:39:52,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:52,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:52,861 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:52,863 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:39:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:39:52,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:39:52,869 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:39:52,871 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:39:52,872 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:39:52,873 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:39:52,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:52,873 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:52,873 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:52,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:39:52,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:52,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:52,874 INFO L82 PathProgramCache]: Analyzing trace with hash -71690202, now seen corresponding path program 1 times [2020-10-16 01:39:52,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:52,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833724548] [2020-10-16 01:39:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:52,946 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 01:39:52,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833724548] [2020-10-16 01:39:52,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:52,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:52,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824920104] [2020-10-16 01:39:52,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:52,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:52,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:52,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:52,951 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 111 [2020-10-16 01:39:52,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:39:52,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:52,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 111 [2020-10-16 01:39:52,952 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,000 INFO L129 PetriNetUnfolder]: 13/56 cut-off events. [2020-10-16 01:39:53,000 INFO L130 PetriNetUnfolder]: For 12/17 co-relation queries the response was YES. [2020-10-16 01:39:53,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 56 events. 13/56 cut-off events. For 12/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 197 event pairs, 1 based on Foata normal form. 7/61 useless extension candidates. Maximal degree in co-relation 106. Up to 17 conditions per place. [2020-10-16 01:39:53,002 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2020-10-16 01:39:53,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 79 flow [2020-10-16 01:39:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2020-10-16 01:39:53,006 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 01:39:53,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2020-10-16 01:39:53,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2020-10-16 01:39:53,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2020-10-16 01:39:53,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:53,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:53,011 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:53,011 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 372 transitions. [2020-10-16 01:39:53,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 79 flow [2020-10-16 01:39:53,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 73 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:53,013 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 01:39:53,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:39:53,014 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:39:53,014 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 01:39:53,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:53,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,014 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:53,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:39:53,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2072831054, now seen corresponding path program 1 times [2020-10-16 01:39:53,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552656716] [2020-10-16 01:39:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,064 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 01:39:53,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552656716] [2020-10-16 01:39:53,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:53,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144640689] [2020-10-16 01:39:53,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:53,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:53,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:53,068 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 111 [2020-10-16 01:39:53,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 01:39:53,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 111 [2020-10-16 01:39:53,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,130 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2020-10-16 01:39:53,130 INFO L130 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2020-10-16 01:39:53,131 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 40 events. 6/40 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 3 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2020-10-16 01:39:53,131 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 5 selfloop transitions, 2 changer transitions 4/22 dead transitions. [2020-10-16 01:39:53,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 94 flow [2020-10-16 01:39:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:39:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:39:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2020-10-16 01:39:53,134 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8342342342342343 [2020-10-16 01:39:53,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2020-10-16 01:39:53,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2020-10-16 01:39:53,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2020-10-16 01:39:53,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:39:53,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:39:53,137 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:39:53,138 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 5 states and 463 transitions. [2020-10-16 01:39:53,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 94 flow [2020-10-16 01:39:53,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 80 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:53,140 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 58 flow [2020-10-16 01:39:53,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 01:39:53,140 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:39:53,140 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 58 flow [2020-10-16 01:39:53,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:53,141 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,141 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:53,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:39:53,141 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -450986952, now seen corresponding path program 1 times [2020-10-16 01:39:53,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314999149] [2020-10-16 01:39:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,178 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 01:39:53,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314999149] [2020-10-16 01:39:53,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:53,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342002031] [2020-10-16 01:39:53,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:53,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:53,182 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 111 [2020-10-16 01:39:53,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 58 flow. Second operand 3 states. [2020-10-16 01:39:53,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 111 [2020-10-16 01:39:53,182 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,191 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:39:53,191 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2020-10-16 01:39:53,191 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 17 events. 0/17 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:39:53,192 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:39:53,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 17 transitions, 64 flow [2020-10-16 01:39:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:39:53,194 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8678678678678678 [2020-10-16 01:39:53,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:39:53,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:39:53,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:39:53,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:53,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:53,196 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:53,196 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 58 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:39:53,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 17 transitions, 64 flow [2020-10-16 01:39:53,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 56 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:53,198 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 01:39:53,198 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:39:53,198 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:39:53,198 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 01:39:53,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:53,199 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,199 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:53,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:39:53,199 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash -888052261, now seen corresponding path program 1 times [2020-10-16 01:39:53,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177213573] [2020-10-16 01:39:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,239 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 01:39:53,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177213573] [2020-10-16 01:39:53,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:53,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812848583] [2020-10-16 01:39:53,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:53,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:53,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:53,242 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 111 [2020-10-16 01:39:53,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states. [2020-10-16 01:39:53,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 111 [2020-10-16 01:39:53,243 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,262 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 01:39:53,263 INFO L130 PetriNetUnfolder]: For 10/12 co-relation queries the response was YES. [2020-10-16 01:39:53,263 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 22 events. 0/22 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:39:53,263 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 01:39:53,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 18 transitions, 73 flow [2020-10-16 01:39:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:53,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2020-10-16 01:39:53,265 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8265765765765766 [2020-10-16 01:39:53,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2020-10-16 01:39:53,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2020-10-16 01:39:53,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2020-10-16 01:39:53,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:53,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:53,268 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:53,268 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 4 states and 367 transitions. [2020-10-16 01:39:53,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 18 transitions, 73 flow [2020-10-16 01:39:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 18 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:53,270 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 68 flow [2020-10-16 01:39:53,270 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 01:39:53,270 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:39:53,271 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 68 flow [2020-10-16 01:39:53,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:53,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,271 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:53,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:39:53,271 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1362611835, now seen corresponding path program 1 times [2020-10-16 01:39:53,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105257617] [2020-10-16 01:39:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,337 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 01:39:53,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105257617] [2020-10-16 01:39:53,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:53,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387942237] [2020-10-16 01:39:53,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:53,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:53,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:53,341 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 01:39:53,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 68 flow. Second operand 4 states. [2020-10-16 01:39:53,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 01:39:53,341 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,383 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:39:53,383 INFO L130 PetriNetUnfolder]: For 124/134 co-relation queries the response was YES. [2020-10-16 01:39:53,384 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 69 events. 28/69 cut-off events. For 124/134 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 205 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 165. Up to 45 conditions per place. [2020-10-16 01:39:53,384 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 01:39:53,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 120 flow [2020-10-16 01:39:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:39:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:39:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2020-10-16 01:39:53,387 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7711711711711712 [2020-10-16 01:39:53,387 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2020-10-16 01:39:53,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2020-10-16 01:39:53,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2020-10-16 01:39:53,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:39:53,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:39:53,390 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:39:53,390 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 68 flow. Second operand 5 states and 428 transitions. [2020-10-16 01:39:53,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 120 flow [2020-10-16 01:39:53,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 3 selfloop flow, removed 6 redundant places. [2020-10-16 01:39:53,392 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 01:39:53,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:39:53,392 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:39:53,393 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 01:39:53,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:53,393 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:53,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:39:53,393 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash -936763998, now seen corresponding path program 1 times [2020-10-16 01:39:53,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499053251] [2020-10-16 01:39:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,461 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 01:39:53,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499053251] [2020-10-16 01:39:53,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:53,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271476204] [2020-10-16 01:39:53,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:39:53,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:39:53,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:39:53,465 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 01:39:53,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 01:39:53,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 01:39:53,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,518 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:39:53,518 INFO L130 PetriNetUnfolder]: For 75/119 co-relation queries the response was YES. [2020-10-16 01:39:53,519 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 75/119 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 168. Up to 35 conditions per place. [2020-10-16 01:39:53,519 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 01:39:53,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 01:39:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:39:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:39:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 01:39:53,522 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2020-10-16 01:39:53,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 01:39:53,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 01:39:53,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 01:39:53,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:39:53,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:39:53,525 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:39:53,525 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 513 transitions. [2020-10-16 01:39:53,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 01:39:53,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:53,528 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 01:39:53,528 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:39:53,528 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:39:53,528 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 01:39:53,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:39:53,528 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,529 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:53,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:39:53,529 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1345081989, now seen corresponding path program 1 times [2020-10-16 01:39:53,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527959603] [2020-10-16 01:39:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,591 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 01:39:53,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527959603] [2020-10-16 01:39:53,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:39:53,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295517995] [2020-10-16 01:39:53,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:39:53,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:39:53,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:39:53,596 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 111 [2020-10-16 01:39:53,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 01:39:53,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 111 [2020-10-16 01:39:53,597 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,691 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:39:53,691 INFO L130 PetriNetUnfolder]: For 98/137 co-relation queries the response was YES. [2020-10-16 01:39:53,692 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 98/137 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 01:39:53,692 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 01:39:53,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 01:39:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:39:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:39:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2020-10-16 01:39:53,695 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2020-10-16 01:39:53,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2020-10-16 01:39:53,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2020-10-16 01:39:53,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2020-10-16 01:39:53,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:39:53,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:39:53,699 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:39:53,699 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 592 transitions. [2020-10-16 01:39:53,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 01:39:53,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:53,702 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 01:39:53,702 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 01:39:53,702 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:39:53,702 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 01:39:53,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:39:53,703 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:53,703 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 01:39:53,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:39:53,703 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash 159865127, now seen corresponding path program 1 times [2020-10-16 01:39:53,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:53,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469168575] [2020-10-16 01:39:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:53,733 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 01:39:53,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469168575] [2020-10-16 01:39:53,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:53,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:53,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498741383] [2020-10-16 01:39:53,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:53,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:53,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:53,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:53,737 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2020-10-16 01:39:53,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states. [2020-10-16 01:39:53,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:53,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2020-10-16 01:39:53,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:53,755 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 01:39:53,755 INFO L130 PetriNetUnfolder]: For 48/58 co-relation queries the response was YES. [2020-10-16 01:39:53,756 INFO L80 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 25 events. 5/25 cut-off events. For 48/58 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 81. Up to 11 conditions per place. [2020-10-16 01:39:53,756 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:39:53,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 138 flow [2020-10-16 01:39:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 01:39:53,758 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8153153153153153 [2020-10-16 01:39:53,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 01:39:53,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 01:39:53,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:53,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 01:39:53,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:53,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:53,760 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:53,760 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 4 states and 362 transitions. [2020-10-16 01:39:53,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 138 flow [2020-10-16 01:39:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 104 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 01:39:53,762 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2020-10-16 01:39:53,762 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=94, 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 01:39:53,762 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:39:53,763 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2020-10-16 01:39:53,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:53,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:39:53,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:53 BasicIcfg [2020-10-16 01:39:53,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:39:53,772 INFO L168 Benchmark]: Toolchain (without parser) took 3879.20 ms. Allocated memory was 251.7 MB in the beginning and 370.7 MB in the end (delta: 119.0 MB). Free memory was 206.9 MB in the beginning and 228.7 MB in the end (delta: -21.7 MB). Peak memory consumption was 97.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:53,772 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:39:53,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.18 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 206.9 MB in the beginning and 268.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:53,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 315.6 MB. Free memory was 268.9 MB in the beginning and 266.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:53,775 INFO L168 Benchmark]: Boogie Preprocessor took 26.16 ms. Allocated memory is still 315.6 MB. Free memory was 266.3 MB in the beginning and 263.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:53,776 INFO L168 Benchmark]: RCFGBuilder took 389.52 ms. Allocated memory is still 315.6 MB. Free memory was 263.8 MB in the beginning and 241.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:53,777 INFO L168 Benchmark]: TraceAbstraction took 2681.74 ms. Allocated memory was 315.6 MB in the beginning and 370.7 MB in the end (delta: 55.1 MB). Free memory was 241.9 MB in the beginning and 228.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:53,781 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 730.18 ms. Allocated memory was 251.7 MB in the beginning and 315.6 MB in the end (delta: 64.0 MB). Free memory was 206.9 MB in the beginning and 268.9 MB in the end (delta: -61.9 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.85 ms. Allocated memory is still 315.6 MB. Free memory was 268.9 MB in the beginning and 266.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.16 ms. Allocated memory is still 315.6 MB. Free memory was 266.3 MB in the beginning and 263.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 389.52 ms. Allocated memory is still 315.6 MB. Free memory was 263.8 MB in the beginning and 241.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2681.74 ms. Allocated memory was 315.6 MB in the beginning and 370.7 MB in the end (delta: 55.1 MB). Free memory was 241.9 MB in the beginning and 228.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 561 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1702 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, 69 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: 2.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 33 SDtfs, 21 SDslu, 18 SDs, 0 SdLazy, 129 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=8, 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, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...