/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:06:10,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:06:10,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:06:10,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:06:10,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:06:10,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:06:10,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:06:10,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:06:10,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:06:10,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:06:10,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:06:10,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:06:10,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:06:10,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:06:10,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:06:10,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:06:10,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:06:10,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:06:10,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:06:10,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:06:10,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:06:10,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:06:10,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:06:10,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:06:10,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:06:10,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:06:10,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:06:10,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:06:10,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:06:10,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:06:10,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:06:10,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:06:10,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:06:10,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:06:10,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:06:10,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:06:10,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:06:10,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:06:10,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:06:10,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:06:10,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:06:10,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:06:10,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:06:10,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:06:10,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:06:10,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:06:10,935 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:06:10,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:06:10,936 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:06:10,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:06:10,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:06:10,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:06:10,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:06:10,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:06:10,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:06:10,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:06:10,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:06:10,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:06:10,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:06:10,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:06:10,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:06:10,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:06:10,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:06:10,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:06:10,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:06:10,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:06:10,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:06:10,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:06:10,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:06:10,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:06:10,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:06:11,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:06:11,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:06:11,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:06:11,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:06:11,256 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:06:11,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-10-16 05:06:11,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667d4ff0d/aeae9a1e9534410bb6fb2c30eed57c5b/FLAG3512865fd [2020-10-16 05:06:11,865 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:06:11,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2020-10-16 05:06:11,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667d4ff0d/aeae9a1e9534410bb6fb2c30eed57c5b/FLAG3512865fd [2020-10-16 05:06:12,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667d4ff0d/aeae9a1e9534410bb6fb2c30eed57c5b [2020-10-16 05:06:12,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:06:12,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:06:12,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:06:12,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:06:12,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:06:12,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647a3d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12, skipping insertion in model container [2020-10-16 05:06:12,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:06:12,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:06:12,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:06:12,660 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:06:12,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:06:12,813 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:06:12,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12 WrapperNode [2020-10-16 05:06:12,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:06:12,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:06:12,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:06:12,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:06:12,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:06:12,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:06:12,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:06:12,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:06:12,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (1/1) ... [2020-10-16 05:06:12,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:06:12,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:06:12,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:06:12,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:06:12,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (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 [2020-10-16 05:06:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:06:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:06:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:06:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:06:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:06:12,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:06:12,972 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:06:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:06:12,973 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:06:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:06:12,974 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 05:06:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 05:06:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:06:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:06:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:06:12,976 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:06:13,351 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:06:13,351 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:06:13,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:06:13 BoogieIcfgContainer [2020-10-16 05:06:13,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:06:13,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:06:13,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:06:13,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:06:13,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:06:12" (1/3) ... [2020-10-16 05:06:13,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e775f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:06:13, skipping insertion in model container [2020-10-16 05:06:13,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:06:12" (2/3) ... [2020-10-16 05:06:13,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e775f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:06:13, skipping insertion in model container [2020-10-16 05:06:13,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:06:13" (3/3) ... [2020-10-16 05:06:13,368 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-10-16 05:06:13,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:06:13,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:06:13,390 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:06:13,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,449 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,449 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,450 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,452 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,453 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,453 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,455 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,455 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,455 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,455 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,456 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,456 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,460 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,461 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,461 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,461 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,468 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,468 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,470 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,473 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:06:13,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:06:13,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:06:13,517 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:06:13,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:06:13,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:06:13,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:06:13,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:06:13,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:06:13,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:06:13,533 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-10-16 05:06:13,584 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-10-16 05:06:13,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:06:13,591 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 05:06:13,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 81 transitions, 182 flow [2020-10-16 05:06:13,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 64 transitions, 140 flow [2020-10-16 05:06:13,604 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:06:13,607 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 64 transitions, 140 flow [2020-10-16 05:06:13,611 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 64 transitions, 140 flow [2020-10-16 05:06:13,612 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 64 transitions, 140 flow [2020-10-16 05:06:13,652 INFO L129 PetriNetUnfolder]: 1/64 cut-off events. [2020-10-16 05:06:13,653 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:06:13,654 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 64 events. 1/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 05:06:13,658 INFO L117 LiptonReduction]: Number of co-enabled transitions 1250 [2020-10-16 05:06:15,145 INFO L132 LiptonReduction]: Checked pairs total: 1949 [2020-10-16 05:06:15,145 INFO L134 LiptonReduction]: Total number of compositions: 46 [2020-10-16 05:06:15,148 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1545 [2020-10-16 05:06:15,157 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2020-10-16 05:06:15,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:06:15,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:15,159 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:15,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:15,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:15,165 INFO L82 PathProgramCache]: Analyzing trace with hash 651694145, now seen corresponding path program 1 times [2020-10-16 05:06:15,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:15,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880184870] [2020-10-16 05:06:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:15,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880184870] [2020-10-16 05:06:15,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:15,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:06:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776357456] [2020-10-16 05:06:15,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:06:15,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:15,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:06:15,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:06:15,513 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 127 [2020-10-16 05:06:15,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states. [2020-10-16 05:06:15,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:15,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 127 [2020-10-16 05:06:15,520 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:15,568 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2020-10-16 05:06:15,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:06:15,568 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:06:15,570 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2020-10-16 05:06:15,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 20 transitions, 58 flow [2020-10-16 05:06:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:06:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:06:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2020-10-16 05:06:15,588 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8766404199475065 [2020-10-16 05:06:15,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2020-10-16 05:06:15,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2020-10-16 05:06:15,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:15,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2020-10-16 05:06:15,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:06:15,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:06:15,606 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:06:15,609 INFO L185 Difference]: Start difference. First operand has 33 places, 20 transitions, 52 flow. Second operand 3 states and 334 transitions. [2020-10-16 05:06:15,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 20 transitions, 58 flow [2020-10-16 05:06:15,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 54 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 05:06:15,615 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 56 flow [2020-10-16 05:06:15,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2020-10-16 05:06:15,620 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2020-10-16 05:06:15,620 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 56 flow [2020-10-16 05:06:15,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:06:15,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:15,620 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:15,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:06:15,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash -184313190, now seen corresponding path program 1 times [2020-10-16 05:06:15,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:15,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798486273] [2020-10-16 05:06:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:15,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798486273] [2020-10-16 05:06:15,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:15,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:06:15,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503876257] [2020-10-16 05:06:15,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:06:15,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:15,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:06:15,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:06:15,721 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 05:06:15,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states. [2020-10-16 05:06:15,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:15,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 05:06:15,722 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:15,765 INFO L129 PetriNetUnfolder]: 6/45 cut-off events. [2020-10-16 05:06:15,766 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2020-10-16 05:06:15,767 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 45 events. 6/45 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 130 event pairs, 0 based on Foata normal form. 4/47 useless extension candidates. Maximal degree in co-relation 79. Up to 11 conditions per place. [2020-10-16 05:06:15,768 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 5 selfloop transitions, 4 changer transitions 1/25 dead transitions. [2020-10-16 05:06:15,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 89 flow [2020-10-16 05:06:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:06:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:06:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2020-10-16 05:06:15,776 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8346456692913385 [2020-10-16 05:06:15,776 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 424 transitions. [2020-10-16 05:06:15,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 424 transitions. [2020-10-16 05:06:15,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:15,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 424 transitions. [2020-10-16 05:06:15,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:06:15,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:06:15,783 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:06:15,783 INFO L185 Difference]: Start difference. First operand has 32 places, 20 transitions, 56 flow. Second operand 4 states and 424 transitions. [2020-10-16 05:06:15,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 89 flow [2020-10-16 05:06:15,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 83 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:06:15,785 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 78 flow [2020-10-16 05:06:15,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 05:06:15,786 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 05:06:15,787 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 78 flow [2020-10-16 05:06:15,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:06:15,787 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:15,787 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:15,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:06:15,788 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash -787763169, now seen corresponding path program 1 times [2020-10-16 05:06:15,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:15,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188918267] [2020-10-16 05:06:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:15,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188918267] [2020-10-16 05:06:15,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:15,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:06:15,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704170847] [2020-10-16 05:06:15,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:06:15,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:15,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:06:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:06:15,870 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 127 [2020-10-16 05:06:15,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 78 flow. Second operand 3 states. [2020-10-16 05:06:15,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:15,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 127 [2020-10-16 05:06:15,871 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:15,886 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2020-10-16 05:06:15,887 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-10-16 05:06:15,887 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 31 events. 3/31 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 1 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2020-10-16 05:06:15,888 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 1 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2020-10-16 05:06:15,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 84 flow [2020-10-16 05:06:15,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:06:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:06:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2020-10-16 05:06:15,890 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8766404199475065 [2020-10-16 05:06:15,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2020-10-16 05:06:15,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2020-10-16 05:06:15,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:15,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2020-10-16 05:06:15,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:06:15,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:06:15,893 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:06:15,893 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 78 flow. Second operand 3 states and 334 transitions. [2020-10-16 05:06:15,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 84 flow [2020-10-16 05:06:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 75 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 05:06:15,895 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 77 flow [2020-10-16 05:06:15,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 05:06:15,895 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2020-10-16 05:06:15,896 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 77 flow [2020-10-16 05:06:15,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:06:15,896 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:15,896 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:15,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:06:15,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1367500132, now seen corresponding path program 1 times [2020-10-16 05:06:15,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:15,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305203272] [2020-10-16 05:06:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:15,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305203272] [2020-10-16 05:06:15,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:15,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:06:15,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000278861] [2020-10-16 05:06:15,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:06:15,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:15,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:06:15,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:06:15,940 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 05:06:15,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 77 flow. Second operand 4 states. [2020-10-16 05:06:15,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:15,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 05:06:15,941 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:15,976 INFO L129 PetriNetUnfolder]: 0/40 cut-off events. [2020-10-16 05:06:15,976 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2020-10-16 05:06:15,977 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 0/40 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 120 event pairs, 0 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2020-10-16 05:06:15,977 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 2/24 dead transitions. [2020-10-16 05:06:15,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 102 flow [2020-10-16 05:06:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:06:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:06:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2020-10-16 05:06:15,980 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8283464566929134 [2020-10-16 05:06:15,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2020-10-16 05:06:15,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2020-10-16 05:06:15,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:15,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2020-10-16 05:06:15,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:06:15,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:06:15,984 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:06:15,984 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 77 flow. Second operand 5 states and 526 transitions. [2020-10-16 05:06:15,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 102 flow [2020-10-16 05:06:15,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:06:15,986 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 90 flow [2020-10-16 05:06:15,986 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2020-10-16 05:06:15,987 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 05:06:15,987 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 90 flow [2020-10-16 05:06:15,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:06:15,987 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:15,987 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:15,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:06:15,988 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:15,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1349777370, now seen corresponding path program 1 times [2020-10-16 05:06:15,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:15,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346527177] [2020-10-16 05:06:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:16,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346527177] [2020-10-16 05:06:16,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:16,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:06:16,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32247183] [2020-10-16 05:06:16,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:06:16,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:16,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:06:16,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:06:16,029 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 05:06:16,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 90 flow. Second operand 4 states. [2020-10-16 05:06:16,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:16,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 05:06:16,030 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:16,066 INFO L129 PetriNetUnfolder]: 7/70 cut-off events. [2020-10-16 05:06:16,066 INFO L130 PetriNetUnfolder]: For 250/257 co-relation queries the response was YES. [2020-10-16 05:06:16,067 INFO L80 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 70 events. 7/70 cut-off events. For 250/257 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 299 event pairs, 2 based on Foata normal form. 8/74 useless extension candidates. Maximal degree in co-relation 161. Up to 18 conditions per place. [2020-10-16 05:06:16,067 INFO L132 encePairwiseOnDemand]: 123/127 looper letters, 4 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2020-10-16 05:06:16,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 113 flow [2020-10-16 05:06:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:06:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:06:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2020-10-16 05:06:16,070 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8307086614173228 [2020-10-16 05:06:16,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2020-10-16 05:06:16,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2020-10-16 05:06:16,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:16,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2020-10-16 05:06:16,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:06:16,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:06:16,073 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:06:16,073 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 90 flow. Second operand 4 states and 422 transitions. [2020-10-16 05:06:16,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 113 flow [2020-10-16 05:06:16,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 25 transitions, 104 flow, removed 3 selfloop flow, removed 3 redundant places. [2020-10-16 05:06:16,076 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 95 flow [2020-10-16 05:06:16,076 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2020-10-16 05:06:16,077 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2020-10-16 05:06:16,077 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 95 flow [2020-10-16 05:06:16,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:06:16,077 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:16,077 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:16,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:06:16,078 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:16,078 INFO L82 PathProgramCache]: Analyzing trace with hash -552410563, now seen corresponding path program 1 times [2020-10-16 05:06:16,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:16,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446141253] [2020-10-16 05:06:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:16,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446141253] [2020-10-16 05:06:16,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:16,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:06:16,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77394508] [2020-10-16 05:06:16,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:06:16,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:06:16,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:06:16,149 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 05:06:16,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 95 flow. Second operand 4 states. [2020-10-16 05:06:16,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:16,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 05:06:16,150 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:16,235 INFO L129 PetriNetUnfolder]: 185/340 cut-off events. [2020-10-16 05:06:16,236 INFO L130 PetriNetUnfolder]: For 1110/1179 co-relation queries the response was YES. [2020-10-16 05:06:16,238 INFO L80 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 340 events. 185/340 cut-off events. For 1110/1179 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 1728 event pairs, 91 based on Foata normal form. 26/333 useless extension candidates. Maximal degree in co-relation 823. Up to 243 conditions per place. [2020-10-16 05:06:16,240 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 5 changer transitions 9/35 dead transitions. [2020-10-16 05:06:16,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 161 flow [2020-10-16 05:06:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:06:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:06:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2020-10-16 05:06:16,243 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7984251968503937 [2020-10-16 05:06:16,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2020-10-16 05:06:16,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2020-10-16 05:06:16,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:16,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2020-10-16 05:06:16,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:06:16,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:06:16,246 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:06:16,247 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 95 flow. Second operand 5 states and 507 transitions. [2020-10-16 05:06:16,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 161 flow [2020-10-16 05:06:16,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 149 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:06:16,250 INFO L241 Difference]: Finished difference. Result has 43 places, 26 transitions, 128 flow [2020-10-16 05:06:16,250 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2020-10-16 05:06:16,250 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2020-10-16 05:06:16,251 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 128 flow [2020-10-16 05:06:16,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:06:16,251 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:16,251 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:16,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:06:16,252 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1324778427, now seen corresponding path program 1 times [2020-10-16 05:06:16,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:16,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247761220] [2020-10-16 05:06:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:16,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247761220] [2020-10-16 05:06:16,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:16,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:06:16,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994494256] [2020-10-16 05:06:16,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:06:16,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:16,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:06:16,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:06:16,349 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 05:06:16,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 128 flow. Second operand 5 states. [2020-10-16 05:06:16,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:16,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 05:06:16,350 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:16,440 INFO L129 PetriNetUnfolder]: 133/266 cut-off events. [2020-10-16 05:06:16,440 INFO L130 PetriNetUnfolder]: For 913/1311 co-relation queries the response was YES. [2020-10-16 05:06:16,442 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 266 events. 133/266 cut-off events. For 913/1311 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1258 event pairs, 25 based on Foata normal form. 50/300 useless extension candidates. Maximal degree in co-relation 1050. Up to 229 conditions per place. [2020-10-16 05:06:16,444 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 9 changer transitions 9/39 dead transitions. [2020-10-16 05:06:16,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 252 flow [2020-10-16 05:06:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:06:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:06:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 608 transitions. [2020-10-16 05:06:16,447 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7979002624671916 [2020-10-16 05:06:16,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 608 transitions. [2020-10-16 05:06:16,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 608 transitions. [2020-10-16 05:06:16,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:16,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 608 transitions. [2020-10-16 05:06:16,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:06:16,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:06:16,451 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:06:16,451 INFO L185 Difference]: Start difference. First operand has 43 places, 26 transitions, 128 flow. Second operand 6 states and 608 transitions. [2020-10-16 05:06:16,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 252 flow [2020-10-16 05:06:16,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:06:16,455 INFO L241 Difference]: Finished difference. Result has 47 places, 30 transitions, 193 flow [2020-10-16 05:06:16,456 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2020-10-16 05:06:16,456 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2020-10-16 05:06:16,456 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 193 flow [2020-10-16 05:06:16,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:06:16,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:16,457 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:16,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:06:16,457 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:16,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1209272257, now seen corresponding path program 1 times [2020-10-16 05:06:16,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:16,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162990323] [2020-10-16 05:06:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:16,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162990323] [2020-10-16 05:06:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:16,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:06:16,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48189128] [2020-10-16 05:06:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:06:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:06:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:06:16,534 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 05:06:16,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 193 flow. Second operand 6 states. [2020-10-16 05:06:16,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:16,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 05:06:16,535 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:16,623 INFO L129 PetriNetUnfolder]: 74/170 cut-off events. [2020-10-16 05:06:16,623 INFO L130 PetriNetUnfolder]: For 967/1381 co-relation queries the response was YES. [2020-10-16 05:06:16,624 INFO L80 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 170 events. 74/170 cut-off events. For 967/1381 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 719 event pairs, 3 based on Foata normal form. 57/218 useless extension candidates. Maximal degree in co-relation 894. Up to 145 conditions per place. [2020-10-16 05:06:16,625 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 6 selfloop transitions, 13 changer transitions 9/43 dead transitions. [2020-10-16 05:06:16,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 375 flow [2020-10-16 05:06:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:06:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:06:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 709 transitions. [2020-10-16 05:06:16,628 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7975253093363329 [2020-10-16 05:06:16,628 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 709 transitions. [2020-10-16 05:06:16,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 709 transitions. [2020-10-16 05:06:16,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:16,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 709 transitions. [2020-10-16 05:06:16,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:06:16,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:06:16,633 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:06:16,633 INFO L185 Difference]: Start difference. First operand has 47 places, 30 transitions, 193 flow. Second operand 7 states and 709 transitions. [2020-10-16 05:06:16,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 375 flow [2020-10-16 05:06:16,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 313 flow, removed 26 selfloop flow, removed 4 redundant places. [2020-10-16 05:06:16,638 INFO L241 Difference]: Finished difference. Result has 50 places, 34 transitions, 243 flow [2020-10-16 05:06:16,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2020-10-16 05:06:16,639 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2020-10-16 05:06:16,639 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 243 flow [2020-10-16 05:06:16,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:06:16,640 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:16,640 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:06:16,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:06:16,640 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:16,641 INFO L82 PathProgramCache]: Analyzing trace with hash 188844575, now seen corresponding path program 1 times [2020-10-16 05:06:16,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:16,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327612016] [2020-10-16 05:06:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:16,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327612016] [2020-10-16 05:06:16,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:16,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:06:16,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275106155] [2020-10-16 05:06:16,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:06:16,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:16,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:06:16,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:06:16,739 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 127 [2020-10-16 05:06:16,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 243 flow. Second operand 7 states. [2020-10-16 05:06:16,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:16,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 127 [2020-10-16 05:06:16,740 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:16,833 INFO L129 PetriNetUnfolder]: 44/110 cut-off events. [2020-10-16 05:06:16,833 INFO L130 PetriNetUnfolder]: For 558/794 co-relation queries the response was YES. [2020-10-16 05:06:16,834 INFO L80 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 110 events. 44/110 cut-off events. For 558/794 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 408 event pairs, 0 based on Foata normal form. 56/157 useless extension candidates. Maximal degree in co-relation 556. Up to 83 conditions per place. [2020-10-16 05:06:16,835 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 2 selfloop transitions, 17 changer transitions 7/39 dead transitions. [2020-10-16 05:06:16,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 39 transitions, 347 flow [2020-10-16 05:06:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 05:06:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-16 05:06:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 802 transitions. [2020-10-16 05:06:16,840 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7893700787401575 [2020-10-16 05:06:16,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 802 transitions. [2020-10-16 05:06:16,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 802 transitions. [2020-10-16 05:06:16,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:16,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 802 transitions. [2020-10-16 05:06:16,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-16 05:06:16,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-16 05:06:16,845 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-16 05:06:16,845 INFO L185 Difference]: Start difference. First operand has 50 places, 34 transitions, 243 flow. Second operand 8 states and 802 transitions. [2020-10-16 05:06:16,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 39 transitions, 347 flow [2020-10-16 05:06:16,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 285 flow, removed 22 selfloop flow, removed 5 redundant places. [2020-10-16 05:06:16,849 INFO L241 Difference]: Finished difference. Result has 53 places, 32 transitions, 226 flow [2020-10-16 05:06:16,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2020-10-16 05:06:16,850 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2020-10-16 05:06:16,850 INFO L481 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 226 flow [2020-10-16 05:06:16,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:06:16,850 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:06:16,850 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] [2020-10-16 05:06:16,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:06:16,851 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:06:16,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:06:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash -90365718, now seen corresponding path program 1 times [2020-10-16 05:06:16,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:06:16,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687627736] [2020-10-16 05:06:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:06:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:06:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:06:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687627736] [2020-10-16 05:06:16,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:06:16,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:06:16,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625043504] [2020-10-16 05:06:16,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:06:16,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:06:16,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:06:16,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:06:16,885 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 127 [2020-10-16 05:06:16,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 226 flow. Second operand 4 states. [2020-10-16 05:06:16,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:06:16,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 127 [2020-10-16 05:06:16,886 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:06:16,902 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2020-10-16 05:06:16,903 INFO L130 PetriNetUnfolder]: For 110/130 co-relation queries the response was YES. [2020-10-16 05:06:16,903 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 47 events. 17/47 cut-off events. For 110/130 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 0 based on Foata normal form. 3/45 useless extension candidates. Maximal degree in co-relation 169. Up to 18 conditions per place. [2020-10-16 05:06:16,903 INFO L132 encePairwiseOnDemand]: 124/127 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2020-10-16 05:06:16,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 31 transitions, 218 flow [2020-10-16 05:06:16,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:06:16,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:06:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2020-10-16 05:06:16,905 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8208661417322834 [2020-10-16 05:06:16,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2020-10-16 05:06:16,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2020-10-16 05:06:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:06:16,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2020-10-16 05:06:16,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:06:16,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:06:16,908 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:06:16,909 INFO L185 Difference]: Start difference. First operand has 53 places, 32 transitions, 226 flow. Second operand 4 states and 417 transitions. [2020-10-16 05:06:16,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 31 transitions, 218 flow [2020-10-16 05:06:16,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 152 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 05:06:16,910 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 05:06:16,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 05:06:16,911 INFO L342 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2020-10-16 05:06:16,911 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 05:06:16,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:06:16,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:06:16,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:06:16 BasicIcfg [2020-10-16 05:06:16,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:06:16,918 INFO L168 Benchmark]: Toolchain (without parser) took 4796.84 ms. Allocated memory was 251.7 MB in the beginning and 421.5 MB in the end (delta: 169.9 MB). Free memory was 205.1 MB in the beginning and 351.4 MB in the end (delta: -146.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:06:16,919 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:06:16,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.25 ms. Allocated memory was 251.7 MB in the beginning and 316.1 MB in the end (delta: 64.5 MB). Free memory was 205.1 MB in the beginning and 267.1 MB in the end (delta: -61.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:06:16,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 316.1 MB. Free memory was 267.1 MB in the beginning and 264.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:06:16,921 INFO L168 Benchmark]: Boogie Preprocessor took 29.50 ms. Allocated memory is still 316.1 MB. Free memory was 264.6 MB in the beginning and 262.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:06:16,922 INFO L168 Benchmark]: RCFGBuilder took 460.03 ms. Allocated memory is still 316.1 MB. Free memory was 262.0 MB in the beginning and 237.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:06:16,923 INFO L168 Benchmark]: TraceAbstraction took 3556.99 ms. Allocated memory was 316.1 MB in the beginning and 421.5 MB in the end (delta: 105.4 MB). Free memory was 237.7 MB in the beginning and 351.4 MB in the end (delta: -113.7 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:06:16,927 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory is still 225.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 692.25 ms. Allocated memory was 251.7 MB in the beginning and 316.1 MB in the end (delta: 64.5 MB). Free memory was 205.1 MB in the beginning and 267.1 MB in the end (delta: -61.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.29 ms. Allocated memory is still 316.1 MB. Free memory was 267.1 MB in the beginning and 264.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.50 ms. Allocated memory is still 316.1 MB. Free memory was 264.6 MB in the beginning and 262.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 460.03 ms. Allocated memory is still 316.1 MB. Free memory was 262.0 MB in the beginning and 237.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3556.99 ms. Allocated memory was 316.1 MB in the beginning and 421.5 MB in the end (delta: 105.4 MB). Free memory was 237.7 MB in the beginning and 351.4 MB in the end (delta: -113.7 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 747 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 77 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 76 PlacesBefore, 33 PlacesAfterwards, 64 TransitionsBefore, 20 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1949 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 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: 3.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 34 SDtfs, 27 SDslu, 25 SDs, 0 SdLazy, 200 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 5526 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...