/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:41:10,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:41:10,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:41:10,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:41:10,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:41:10,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:41:10,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:41:10,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:41:10,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:41:10,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:41:10,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:41:10,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:41:10,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:41:10,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:41:10,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:41:10,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:41:10,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:41:10,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:41:10,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:41:10,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:41:10,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:41:10,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:41:10,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:41:10,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:41:10,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 18:41:10,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:41:10,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:41:10,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:41:10,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:41:10,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:41:10,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:41:10,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:41:10,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:41:10,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:41:10,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:41:10,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:41:10,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:41:10,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:41:10,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:41:10,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:41:10,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:41:10,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:41:10,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:41:10,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:41:10,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:41:10,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:41:10,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:41:10,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:41:10,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:41:10,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:41:10,886 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:41:10,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:41:10,886 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:41:10,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:41:10,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:41:10,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:41:10,887 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:41:10,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:41:10,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:41:10,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:41:10,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:41:10,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:41:10,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:41:10,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:41:10,889 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:41:10,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:41:10,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:41:11,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:41:11,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:41:11,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:41:11,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:41:11,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:41:11,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-11 18:41:11,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082379aa2/f2abc6beab394f5eb58170b71388c7bf/FLAG6431b3b31 [2020-10-11 18:41:11,644 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:41:11,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-10-11 18:41:11,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082379aa2/f2abc6beab394f5eb58170b71388c7bf/FLAG6431b3b31 [2020-10-11 18:41:11,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082379aa2/f2abc6beab394f5eb58170b71388c7bf [2020-10-11 18:41:11,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:41:11,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:41:11,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:41:11,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:41:11,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:41:11,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:41:11" (1/1) ... [2020-10-11 18:41:11,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9df403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:11, skipping insertion in model container [2020-10-11 18:41:11,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:41:11" (1/1) ... [2020-10-11 18:41:12,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:41:12,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:41:12,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:41:12,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:41:12,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:41:12,724 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:41:12,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12 WrapperNode [2020-10-11 18:41:12,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:41:12,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:41:12,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:41:12,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:41:12,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:41:12,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:41:12,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:41:12,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:41:12,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (1/1) ... [2020-10-11 18:41:12,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:41:12,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:41:12,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:41:12,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:41:12,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (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 [2020-10-11 18:41:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:41:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:41:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:41:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:41:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:41:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:41:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:41:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:41:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:41:12,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:41:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:41:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:41:12,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:41:12,958 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:41:13,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:41:13,412 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:41:13,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:41:13 BoogieIcfgContainer [2020-10-11 18:41:13,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:41:13,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:41:13,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:41:13,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:41:13,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:41:11" (1/3) ... [2020-10-11 18:41:13,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aedcbf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:41:13, skipping insertion in model container [2020-10-11 18:41:13,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:41:12" (2/3) ... [2020-10-11 18:41:13,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aedcbf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:41:13, skipping insertion in model container [2020-10-11 18:41:13,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:41:13" (3/3) ... [2020-10-11 18:41:13,422 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-10-11 18:41:13,434 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:41:13,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:41:13,442 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:41:13,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,468 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,468 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,468 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,471 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,482 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,482 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,482 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,485 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:41:13,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:41:13,525 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:41:13,525 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:41:13,525 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:41:13,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:41:13,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:41:13,526 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:41:13,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:41:13,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:41:13,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:41:13,590 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-11 18:41:13,591 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:13,598 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 51 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. [2020-10-11 18:41:13,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-11 18:41:13,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-11 18:41:13,642 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-11 18:41:13,642 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:13,643 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:13,644 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:13,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-10-11 18:41:13,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:13,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704922161] [2020-10-11 18:41:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:14,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704922161] [2020-10-11 18:41:14,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:14,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:14,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703127382] [2020-10-11 18:41:14,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:14,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:14,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:14,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:14,384 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:41:14,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 6 states. [2020-10-11 18:41:14,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:14,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:41:14,388 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:14,534 INFO L129 PetriNetUnfolder]: 24/128 cut-off events. [2020-10-11 18:41:14,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:41:14,535 INFO L80 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 128 events. 24/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 407 event pairs, 5 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 174. Up to 31 conditions per place. [2020-10-11 18:41:14,537 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 8 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2020-10-11 18:41:14,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 221 flow [2020-10-11 18:41:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 565 transitions. [2020-10-11 18:41:14,556 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8968253968253969 [2020-10-11 18:41:14,557 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 565 transitions. [2020-10-11 18:41:14,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 565 transitions. [2020-10-11 18:41:14,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:14,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 565 transitions. [2020-10-11 18:41:14,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:14,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:14,577 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:14,579 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 565 transitions. [2020-10-11 18:41:14,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 221 flow [2020-10-11 18:41:14,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 76 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:41:14,589 INFO L241 Difference]: Finished difference. Result has 77 places, 57 transitions, 159 flow [2020-10-11 18:41:14,592 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2020-10-11 18:41:14,593 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-11 18:41:14,593 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 159 flow [2020-10-11 18:41:14,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:14,593 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:14,594 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:14,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:41:14,594 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:14,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:14,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1618521006, now seen corresponding path program 1 times [2020-10-11 18:41:14,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:14,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370997582] [2020-10-11 18:41:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:14,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370997582] [2020-10-11 18:41:14,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:14,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:14,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061100796] [2020-10-11 18:41:14,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:14,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:14,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:14,883 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:41:14,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 159 flow. Second operand 6 states. [2020-10-11 18:41:14,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:14,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:41:14,884 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:15,017 INFO L129 PetriNetUnfolder]: 28/151 cut-off events. [2020-10-11 18:41:15,017 INFO L130 PetriNetUnfolder]: For 171/172 co-relation queries the response was YES. [2020-10-11 18:41:15,019 INFO L80 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 151 events. 28/151 cut-off events. For 171/172 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 514 event pairs, 9 based on Foata normal form. 6/151 useless extension candidates. Maximal degree in co-relation 321. Up to 31 conditions per place. [2020-10-11 18:41:15,020 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/67 dead transitions. [2020-10-11 18:41:15,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 67 transitions, 233 flow [2020-10-11 18:41:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:41:15,024 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:41:15,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:41:15,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:41:15,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:15,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:41:15,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:15,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:15,029 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:15,029 INFO L185 Difference]: Start difference. First operand has 77 places, 57 transitions, 159 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:41:15,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 67 transitions, 233 flow [2020-10-11 18:41:15,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 216 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:41:15,037 INFO L241 Difference]: Finished difference. Result has 82 places, 57 transitions, 170 flow [2020-10-11 18:41:15,037 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=82, PETRI_TRANSITIONS=57} [2020-10-11 18:41:15,038 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2020-10-11 18:41:15,038 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 57 transitions, 170 flow [2020-10-11 18:41:15,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:15,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:15,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:15,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:41:15,039 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:15,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1714447379, now seen corresponding path program 1 times [2020-10-11 18:41:15,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:15,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37186960] [2020-10-11 18:41:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:15,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37186960] [2020-10-11 18:41:15,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:15,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:15,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356455857] [2020-10-11 18:41:15,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:15,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:15,309 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-11 18:41:15,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 57 transitions, 170 flow. Second operand 6 states. [2020-10-11 18:41:15,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:15,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-11 18:41:15,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:15,435 INFO L129 PetriNetUnfolder]: 19/126 cut-off events. [2020-10-11 18:41:15,435 INFO L130 PetriNetUnfolder]: For 187/189 co-relation queries the response was YES. [2020-10-11 18:41:15,437 INFO L80 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 126 events. 19/126 cut-off events. For 187/189 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 361 event pairs, 9 based on Foata normal form. 5/127 useless extension candidates. Maximal degree in co-relation 276. Up to 23 conditions per place. [2020-10-11 18:41:15,438 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/67 dead transitions. [2020-10-11 18:41:15,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 254 flow [2020-10-11 18:41:15,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-11 18:41:15,441 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-11 18:41:15,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-11 18:41:15,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-11 18:41:15,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:15,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-11 18:41:15,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:15,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:15,446 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:15,446 INFO L185 Difference]: Start difference. First operand has 82 places, 57 transitions, 170 flow. Second operand 9 states and 560 transitions. [2020-10-11 18:41:15,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 254 flow [2020-10-11 18:41:15,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 67 transitions, 220 flow, removed 15 selfloop flow, removed 8 redundant places. [2020-10-11 18:41:15,451 INFO L241 Difference]: Finished difference. Result has 83 places, 57 transitions, 172 flow [2020-10-11 18:41:15,451 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=172, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2020-10-11 18:41:15,452 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2020-10-11 18:41:15,452 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 172 flow [2020-10-11 18:41:15,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:15,452 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:15,452 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:15,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:41:15,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1979867003, now seen corresponding path program 1 times [2020-10-11 18:41:15,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:15,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551748255] [2020-10-11 18:41:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:15,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551748255] [2020-10-11 18:41:15,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:15,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:15,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998512847] [2020-10-11 18:41:15,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:15,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:15,789 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-11 18:41:15,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 172 flow. Second operand 7 states. [2020-10-11 18:41:15,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:15,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-11 18:41:15,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:15,923 INFO L129 PetriNetUnfolder]: 8/98 cut-off events. [2020-10-11 18:41:15,923 INFO L130 PetriNetUnfolder]: For 90/102 co-relation queries the response was YES. [2020-10-11 18:41:15,924 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 98 events. 8/98 cut-off events. For 90/102 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 253 event pairs, 3 based on Foata normal form. 5/99 useless extension candidates. Maximal degree in co-relation 196. Up to 12 conditions per place. [2020-10-11 18:41:15,924 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 7 selfloop transitions, 4 changer transitions 11/69 dead transitions. [2020-10-11 18:41:15,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 69 transitions, 277 flow [2020-10-11 18:41:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:41:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:41:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 604 transitions. [2020-10-11 18:41:15,927 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2020-10-11 18:41:15,928 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 604 transitions. [2020-10-11 18:41:15,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 604 transitions. [2020-10-11 18:41:15,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:15,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 604 transitions. [2020-10-11 18:41:15,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:41:15,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:41:15,932 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:41:15,932 INFO L185 Difference]: Start difference. First operand has 83 places, 57 transitions, 172 flow. Second operand 10 states and 604 transitions. [2020-10-11 18:41:15,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 69 transitions, 277 flow [2020-10-11 18:41:15,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 69 transitions, 239 flow, removed 17 selfloop flow, removed 8 redundant places. [2020-10-11 18:41:15,936 INFO L241 Difference]: Finished difference. Result has 86 places, 58 transitions, 185 flow [2020-10-11 18:41:15,936 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=185, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2020-10-11 18:41:15,936 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-11 18:41:15,936 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 185 flow [2020-10-11 18:41:15,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:15,937 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:15,937 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:15,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:41:15,937 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:15,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:15,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1387037274, now seen corresponding path program 1 times [2020-10-11 18:41:15,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:15,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222328909] [2020-10-11 18:41:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:16,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222328909] [2020-10-11 18:41:16,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:16,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:16,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834213069] [2020-10-11 18:41:16,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:16,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:16,301 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:16,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 185 flow. Second operand 7 states. [2020-10-11 18:41:16,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:16,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:16,302 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:16,382 INFO L129 PetriNetUnfolder]: 0/111 cut-off events. [2020-10-11 18:41:16,382 INFO L130 PetriNetUnfolder]: For 140/210 co-relation queries the response was YES. [2020-10-11 18:41:16,382 INFO L80 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 111 events. 0/111 cut-off events. For 140/210 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 398 event pairs, 0 based on Foata normal form. 4/110 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2020-10-11 18:41:16,383 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 15 selfloop transitions, 3 changer transitions 7/68 dead transitions. [2020-10-11 18:41:16,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 302 flow [2020-10-11 18:41:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:41:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:41:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 422 transitions. [2020-10-11 18:41:16,385 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8612244897959184 [2020-10-11 18:41:16,385 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 422 transitions. [2020-10-11 18:41:16,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 422 transitions. [2020-10-11 18:41:16,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:16,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 422 transitions. [2020-10-11 18:41:16,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:41:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:41:16,388 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:41:16,389 INFO L185 Difference]: Start difference. First operand has 86 places, 58 transitions, 185 flow. Second operand 7 states and 422 transitions. [2020-10-11 18:41:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 68 transitions, 302 flow [2020-10-11 18:41:16,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 246 flow, removed 26 selfloop flow, removed 11 redundant places. [2020-10-11 18:41:16,392 INFO L241 Difference]: Finished difference. Result has 80 places, 56 transitions, 171 flow [2020-10-11 18:41:16,392 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2020-10-11 18:41:16,393 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2020-10-11 18:41:16,393 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 171 flow [2020-10-11 18:41:16,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:16,393 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:16,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:16,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:41:16,394 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash -680128004, now seen corresponding path program 2 times [2020-10-11 18:41:16,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:16,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658786566] [2020-10-11 18:41:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:16,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:16,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658786566] [2020-10-11 18:41:16,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:16,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:16,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891083654] [2020-10-11 18:41:16,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:16,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:16,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:16,601 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:16,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 171 flow. Second operand 6 states. [2020-10-11 18:41:16,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:16,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:16,602 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:16,808 INFO L129 PetriNetUnfolder]: 206/610 cut-off events. [2020-10-11 18:41:16,809 INFO L130 PetriNetUnfolder]: For 234/241 co-relation queries the response was YES. [2020-10-11 18:41:16,815 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 610 events. 206/610 cut-off events. For 234/241 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4082 event pairs, 32 based on Foata normal form. 18/594 useless extension candidates. Maximal degree in co-relation 1130. Up to 186 conditions per place. [2020-10-11 18:41:16,819 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 6 changer transitions 19/81 dead transitions. [2020-10-11 18:41:16,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 291 flow [2020-10-11 18:41:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:41:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:41:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 550 transitions. [2020-10-11 18:41:16,823 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2020-10-11 18:41:16,823 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 550 transitions. [2020-10-11 18:41:16,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 550 transitions. [2020-10-11 18:41:16,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:16,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 550 transitions. [2020-10-11 18:41:16,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:41:16,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:41:16,829 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:41:16,829 INFO L185 Difference]: Start difference. First operand has 80 places, 56 transitions, 171 flow. Second operand 9 states and 550 transitions. [2020-10-11 18:41:16,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 291 flow [2020-10-11 18:41:16,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 81 transitions, 270 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-11 18:41:16,834 INFO L241 Difference]: Finished difference. Result has 82 places, 59 transitions, 206 flow [2020-10-11 18:41:16,835 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2020-10-11 18:41:16,835 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2020-10-11 18:41:16,835 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 206 flow [2020-10-11 18:41:16,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:16,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:16,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:16,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:41:16,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -437669339, now seen corresponding path program 1 times [2020-10-11 18:41:16,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:16,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216143940] [2020-10-11 18:41:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:16,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216143940] [2020-10-11 18:41:16,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:16,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:16,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271902113] [2020-10-11 18:41:16,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:16,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:16,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:16,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:17,157 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:17,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 206 flow. Second operand 7 states. [2020-10-11 18:41:17,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:17,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:17,159 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:17,347 INFO L129 PetriNetUnfolder]: 112/406 cut-off events. [2020-10-11 18:41:17,350 INFO L130 PetriNetUnfolder]: For 628/732 co-relation queries the response was YES. [2020-10-11 18:41:17,354 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 406 events. 112/406 cut-off events. For 628/732 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2348 event pairs, 0 based on Foata normal form. 32/428 useless extension candidates. Maximal degree in co-relation 1241. Up to 165 conditions per place. [2020-10-11 18:41:17,356 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 10 selfloop transitions, 9 changer transitions 19/84 dead transitions. [2020-10-11 18:41:17,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 459 flow [2020-10-11 18:41:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:41:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:41:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2020-10-11 18:41:17,362 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8714285714285714 [2020-10-11 18:41:17,362 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2020-10-11 18:41:17,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2020-10-11 18:41:17,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:17,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2020-10-11 18:41:17,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:41:17,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:41:17,366 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:41:17,366 INFO L185 Difference]: Start difference. First operand has 82 places, 59 transitions, 206 flow. Second operand 10 states and 610 transitions. [2020-10-11 18:41:17,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 459 flow [2020-10-11 18:41:17,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 435 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:41:17,372 INFO L241 Difference]: Finished difference. Result has 88 places, 62 transitions, 274 flow [2020-10-11 18:41:17,372 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2020-10-11 18:41:17,372 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2020-10-11 18:41:17,373 INFO L481 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 274 flow [2020-10-11 18:41:17,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:17,373 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:17,373 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:17,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:41:17,373 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash 156287804, now seen corresponding path program 1 times [2020-10-11 18:41:17,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:17,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685634647] [2020-10-11 18:41:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:17,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685634647] [2020-10-11 18:41:17,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:17,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:41:17,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158604960] [2020-10-11 18:41:17,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:41:17,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:17,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:41:17,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:41:17,623 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:17,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 274 flow. Second operand 8 states. [2020-10-11 18:41:17,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:17,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:17,624 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:17,838 INFO L129 PetriNetUnfolder]: 33/190 cut-off events. [2020-10-11 18:41:17,839 INFO L130 PetriNetUnfolder]: For 784/887 co-relation queries the response was YES. [2020-10-11 18:41:17,840 INFO L80 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 190 events. 33/190 cut-off events. For 784/887 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 772 event pairs, 0 based on Foata normal form. 33/219 useless extension candidates. Maximal degree in co-relation 663. Up to 64 conditions per place. [2020-10-11 18:41:17,841 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 4 selfloop transitions, 12 changer transitions 13/75 dead transitions. [2020-10-11 18:41:17,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 458 flow [2020-10-11 18:41:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:41:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:41:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 658 transitions. [2020-10-11 18:41:17,867 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8545454545454545 [2020-10-11 18:41:17,867 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 658 transitions. [2020-10-11 18:41:17,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 658 transitions. [2020-10-11 18:41:17,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:17,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 658 transitions. [2020-10-11 18:41:17,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:41:17,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:41:17,872 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:41:17,872 INFO L185 Difference]: Start difference. First operand has 88 places, 62 transitions, 274 flow. Second operand 11 states and 658 transitions. [2020-10-11 18:41:17,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 458 flow [2020-10-11 18:41:17,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 75 transitions, 353 flow, removed 41 selfloop flow, removed 11 redundant places. [2020-10-11 18:41:17,877 INFO L241 Difference]: Finished difference. Result has 89 places, 62 transitions, 254 flow [2020-10-11 18:41:17,877 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=254, PETRI_PLACES=89, PETRI_TRANSITIONS=62} [2020-10-11 18:41:17,877 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2020-10-11 18:41:17,877 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 62 transitions, 254 flow [2020-10-11 18:41:17,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:41:17,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:17,878 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:17,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:41:17,878 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:17,879 INFO L82 PathProgramCache]: Analyzing trace with hash -964176949, now seen corresponding path program 1 times [2020-10-11 18:41:17,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:17,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228130669] [2020-10-11 18:41:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:18,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228130669] [2020-10-11 18:41:18,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:18,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:41:18,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866395558] [2020-10-11 18:41:18,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:41:18,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:18,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:41:18,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:41:18,187 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-11 18:41:18,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 62 transitions, 254 flow. Second operand 7 states. [2020-10-11 18:41:18,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:18,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-11 18:41:18,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:18,326 INFO L129 PetriNetUnfolder]: 16/161 cut-off events. [2020-10-11 18:41:18,326 INFO L130 PetriNetUnfolder]: For 235/258 co-relation queries the response was YES. [2020-10-11 18:41:18,327 INFO L80 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 161 events. 16/161 cut-off events. For 235/258 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 586 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 369. Up to 33 conditions per place. [2020-10-11 18:41:18,328 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 9 selfloop transitions, 2 changer transitions 12/72 dead transitions. [2020-10-11 18:41:18,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 72 transitions, 324 flow [2020-10-11 18:41:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:41:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:41:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 651 transitions. [2020-10-11 18:41:18,331 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8454545454545455 [2020-10-11 18:41:18,331 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 651 transitions. [2020-10-11 18:41:18,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 651 transitions. [2020-10-11 18:41:18,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:18,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 651 transitions. [2020-10-11 18:41:18,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:41:18,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:41:18,335 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:41:18,335 INFO L185 Difference]: Start difference. First operand has 89 places, 62 transitions, 254 flow. Second operand 11 states and 651 transitions. [2020-10-11 18:41:18,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 72 transitions, 324 flow [2020-10-11 18:41:18,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 238 flow, removed 24 selfloop flow, removed 15 redundant places. [2020-10-11 18:41:18,339 INFO L241 Difference]: Finished difference. Result has 89 places, 60 transitions, 184 flow [2020-10-11 18:41:18,339 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=184, PETRI_PLACES=89, PETRI_TRANSITIONS=60} [2020-10-11 18:41:18,339 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2020-10-11 18:41:18,339 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 60 transitions, 184 flow [2020-10-11 18:41:18,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:41:18,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:41:18,340 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:41:18,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:41:18,340 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:41:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:41:18,340 INFO L82 PathProgramCache]: Analyzing trace with hash -801609961, now seen corresponding path program 2 times [2020-10-11 18:41:18,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:41:18,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915952036] [2020-10-11 18:41:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:41:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:41:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:41:18,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915952036] [2020-10-11 18:41:18,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:41:18,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:41:18,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136219000] [2020-10-11 18:41:18,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:41:18,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:41:18,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:41:18,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:41:18,625 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-11 18:41:18,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 60 transitions, 184 flow. Second operand 6 states. [2020-10-11 18:41:18,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:41:18,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-11 18:41:18,626 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:41:18,681 INFO L129 PetriNetUnfolder]: 5/69 cut-off events. [2020-10-11 18:41:18,681 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-10-11 18:41:18,682 INFO L80 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 69 events. 5/69 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2020-10-11 18:41:18,682 INFO L132 encePairwiseOnDemand]: 65/70 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2020-10-11 18:41:18,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 58 transitions, 192 flow [2020-10-11 18:41:18,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:41:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:41:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 363 transitions. [2020-10-11 18:41:18,684 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2020-10-11 18:41:18,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 363 transitions. [2020-10-11 18:41:18,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 363 transitions. [2020-10-11 18:41:18,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:41:18,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 363 transitions. [2020-10-11 18:41:18,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:41:18,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:41:18,687 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:41:18,687 INFO L185 Difference]: Start difference. First operand has 89 places, 60 transitions, 184 flow. Second operand 6 states and 363 transitions. [2020-10-11 18:41:18,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 58 transitions, 192 flow [2020-10-11 18:41:18,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 58 transitions, 168 flow, removed 7 selfloop flow, removed 11 redundant places. [2020-10-11 18:41:18,689 INFO L241 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2020-10-11 18:41:18,690 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2020-10-11 18:41:18,690 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2020-10-11 18:41:18,690 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2020-10-11 18:41:18,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:41:18,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:41:18,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:41:18 BasicIcfg [2020-10-11 18:41:18,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:41:18,704 INFO L168 Benchmark]: Toolchain (without parser) took 6710.74 ms. Allocated memory was 254.8 MB in the beginning and 424.7 MB in the end (delta: 169.9 MB). Free memory was 209.0 MB in the beginning and 244.0 MB in the end (delta: -35.0 MB). Peak memory consumption was 134.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:18,704 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:41:18,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.86 ms. Allocated memory was 254.8 MB in the beginning and 324.0 MB in the end (delta: 69.2 MB). Free memory was 209.0 MB in the beginning and 276.9 MB in the end (delta: -67.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:18,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.95 ms. Allocated memory is still 324.0 MB. Free memory is still 276.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:41:18,706 INFO L168 Benchmark]: Boogie Preprocessor took 53.20 ms. Allocated memory is still 324.0 MB. Free memory was 276.9 MB in the beginning and 274.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:18,707 INFO L168 Benchmark]: RCFGBuilder took 549.26 ms. Allocated memory is still 324.0 MB. Free memory was 274.3 MB in the beginning and 252.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:18,710 INFO L168 Benchmark]: TraceAbstraction took 5281.36 ms. Allocated memory was 324.0 MB in the beginning and 424.7 MB in the end (delta: 100.7 MB). Free memory was 250.0 MB in the beginning and 244.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 106.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:41:18,721 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 254.8 MB. Free memory is still 231.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 736.86 ms. Allocated memory was 254.8 MB in the beginning and 324.0 MB in the end (delta: 69.2 MB). Free memory was 209.0 MB in the beginning and 276.9 MB in the end (delta: -67.8 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 82.95 ms. Allocated memory is still 324.0 MB. Free memory is still 276.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 53.20 ms. Allocated memory is still 324.0 MB. Free memory was 276.9 MB in the beginning and 274.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 549.26 ms. Allocated memory is still 324.0 MB. Free memory was 274.3 MB in the beginning and 252.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5281.36 ms. Allocated memory was 324.0 MB in the beginning and 424.7 MB in the end (delta: 100.7 MB). Free memory was 250.0 MB in the beginning and 244.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 106.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 284 SDslu, 688 SDs, 0 SdLazy, 688 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=7, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 51306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...