/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/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:02:16,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:02:16,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:02:17,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:02:17,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:02:17,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:02:17,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:02:17,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:02:17,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:02:17,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:02:17,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:02:17,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:02:17,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:02:17,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:02:17,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:02:17,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:02:17,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:02:17,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:02:17,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:02:17,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:02:17,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:02:17,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:02:17,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:02:17,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:02:17,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:02:17,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:02:17,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:02:17,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:02:17,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:02:17,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:02:17,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:02:17,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:02:17,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:02:17,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:02:17,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:02:17,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:02:17,058 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 05:02:17,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:02:17,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:02:17,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:02:17,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:02:17,109 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:02:17,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:02:17,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:02:17,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:02:17,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:02:17,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:02:17,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:02:17,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:02:17,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:02:17,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:02:17,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:02:17,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:02:17,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:02:17,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:02:17,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:02:17,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:02:17,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:02:17,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:02:17,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:02:17,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:02:17,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:02:17,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:02:17,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:02:17,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:02:17,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:02:17,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:02:17,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:02:17,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:02:17,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:02:17,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:02:17,419 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-16 05:02:17,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ad8828f/363536f1c2814dcf885f2772bac44f78/FLAG2d50fa949 [2020-10-16 05:02:17,991 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:02:17,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-10-16 05:02:18,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ad8828f/363536f1c2814dcf885f2772bac44f78/FLAG2d50fa949 [2020-10-16 05:02:18,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ad8828f/363536f1c2814dcf885f2772bac44f78 [2020-10-16 05:02:18,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:02:18,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:02:18,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:18,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:02:18,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:02:18,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:18" (1/1) ... [2020-10-16 05:02:18,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0841ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:18, skipping insertion in model container [2020-10-16 05:02:18,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:02:18" (1/1) ... [2020-10-16 05:02:18,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:02:18,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:02:18,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:18,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:02:18,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:02:19,069 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:02:19,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19 WrapperNode [2020-10-16 05:02:19,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:02:19,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:19,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:02:19,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:02:19,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:02:19,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:02:19,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:02:19,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:02:19,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (1/1) ... [2020-10-16 05:02:19,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:02:19,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:02:19,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:02:19,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:02:19,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (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 05:02:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:02:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:02:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:02:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:02:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:02:19,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:02:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:02:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:02:19,235 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:02:19,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:02:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:02:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:02:19,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:02:19,238 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 05:02:19,616 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:02:19,616 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:02:19,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:19 BoogieIcfgContainer [2020-10-16 05:02:19,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:02:19,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:02:19,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:02:19,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:02:19,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:02:18" (1/3) ... [2020-10-16 05:02:19,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7832dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:19, skipping insertion in model container [2020-10-16 05:02:19,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:02:19" (2/3) ... [2020-10-16 05:02:19,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7832dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:02:19, skipping insertion in model container [2020-10-16 05:02:19,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:02:19" (3/3) ... [2020-10-16 05:02:19,626 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-10-16 05:02:19,636 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:02:19,643 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:02:19,644 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:02:19,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,672 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,672 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,672 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,672 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,674 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,674 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,675 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,678 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,686 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,686 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,687 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,689 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,690 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,690 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:02:19,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:02:19,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:02:19,728 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:02:19,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:02:19,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:02:19,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:02:19,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:02:19,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:02:19,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:02:19,741 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:02:19,783 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 05:02:19,783 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:19,788 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:02:19,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 05:02:19,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:19,797 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:02:19,799 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:19,802 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:19,803 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 05:02:19,821 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 05:02:19,821 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:19,822 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:02:19,825 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:02:21,241 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 05:02:21,242 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:02:21,244 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1450 [2020-10-16 05:02:21,253 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:02:21,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:21,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:21,254 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:21,255 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:21,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:21,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 05:02:21,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:21,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260663139] [2020-10-16 05:02:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:21,492 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 05:02:21,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260663139] [2020-10-16 05:02:21,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:21,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:02:21,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342531254] [2020-10-16 05:02:21,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:21,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:21,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:21,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:21,521 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:02:21,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:02:21,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:21,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:02:21,525 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:21,566 INFO L129 PetriNetUnfolder]: 21/62 cut-off events. [2020-10-16 05:02:21,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:02:21,567 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 62 events. 21/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 11 based on Foata normal form. 3/62 useless extension candidates. Maximal degree in co-relation 105. Up to 40 conditions per place. [2020-10-16 05:02:21,569 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 7 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 05:02:21,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 71 flow [2020-10-16 05:02:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2020-10-16 05:02:21,587 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2020-10-16 05:02:21,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2020-10-16 05:02:21,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2020-10-16 05:02:21,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:21,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2020-10-16 05:02:21,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:21,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:21,604 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:21,607 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 278 transitions. [2020-10-16 05:02:21,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 71 flow [2020-10-16 05:02:21,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:21,613 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 05:02:21,616 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2020-10-16 05:02:21,617 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:02:21,617 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 05:02:21,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:21,618 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:21,618 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:21,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:02:21,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:21,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1767159428, now seen corresponding path program 1 times [2020-10-16 05:02:21,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:21,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385886480] [2020-10-16 05:02:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:21,707 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 05:02:21,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385886480] [2020-10-16 05:02:21,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:21,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:02:21,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659672882] [2020-10-16 05:02:21,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:21,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:21,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:21,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:21,712 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 112 [2020-10-16 05:02:21,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 05:02:21,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:21,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 112 [2020-10-16 05:02:21,713 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:21,726 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 05:02:21,726 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:02:21,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 25 events. 3/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 42. Up to 10 conditions per place. [2020-10-16 05:02:21,727 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:02:21,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 65 flow [2020-10-16 05:02:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 05:02:21,731 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2020-10-16 05:02:21,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 05:02:21,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 05:02:21,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:21,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 05:02:21,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:21,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:21,736 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:21,736 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 286 transitions. [2020-10-16 05:02:21,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 65 flow [2020-10-16 05:02:21,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:02:21,738 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 05:02:21,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2020-10-16 05:02:21,739 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 05:02:21,739 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 05:02:21,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:21,740 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:21,740 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:21,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:02:21,740 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:21,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1674271503, now seen corresponding path program 1 times [2020-10-16 05:02:21,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:21,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001360367] [2020-10-16 05:02:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:21,826 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 05:02:21,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001360367] [2020-10-16 05:02:21,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:21,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281394795] [2020-10-16 05:02:21,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:21,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:21,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:21,830 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:02:21,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 4 states. [2020-10-16 05:02:21,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:21,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:02:21,831 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:21,867 INFO L129 PetriNetUnfolder]: 10/51 cut-off events. [2020-10-16 05:02:21,868 INFO L130 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2020-10-16 05:02:21,868 INFO L80 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 51 events. 10/51 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 167 event pairs, 0 based on Foata normal form. 5/55 useless extension candidates. Maximal degree in co-relation 110. Up to 20 conditions per place. [2020-10-16 05:02:21,869 INFO L132 encePairwiseOnDemand]: 107/112 looper letters, 7 selfloop transitions, 4 changer transitions 1/23 dead transitions. [2020-10-16 05:02:21,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 103 flow [2020-10-16 05:02:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2020-10-16 05:02:21,872 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7879464285714286 [2020-10-16 05:02:21,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2020-10-16 05:02:21,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2020-10-16 05:02:21,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:21,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2020-10-16 05:02:21,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:21,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:21,876 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:21,876 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 4 states and 353 transitions. [2020-10-16 05:02:21,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 103 flow [2020-10-16 05:02:21,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 97 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:21,878 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2020-10-16 05:02:21,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 05:02:21,878 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:02:21,879 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2020-10-16 05:02:21,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:21,879 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:21,879 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:21,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:02:21,879 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1700575623, now seen corresponding path program 2 times [2020-10-16 05:02:21,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:21,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955296976] [2020-10-16 05:02:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:21,968 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 05:02:21,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955296976] [2020-10-16 05:02:21,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:21,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:21,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074025506] [2020-10-16 05:02:21,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:21,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:21,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:21,974 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:02:21,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand 4 states. [2020-10-16 05:02:21,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:21,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:02:21,978 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,019 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-10-16 05:02:22,019 INFO L130 PetriNetUnfolder]: For 39/41 co-relation queries the response was YES. [2020-10-16 05:02:22,020 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 50 events. 6/50 cut-off events. For 39/41 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 166 event pairs, 2 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 111. Up to 15 conditions per place. [2020-10-16 05:02:22,020 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 7 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2020-10-16 05:02:22,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 123 flow [2020-10-16 05:02:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:02:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:02:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2020-10-16 05:02:22,023 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7839285714285714 [2020-10-16 05:02:22,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2020-10-16 05:02:22,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2020-10-16 05:02:22,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2020-10-16 05:02:22,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:02:22,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:02:22,027 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:02:22,028 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 5 states and 439 transitions. [2020-10-16 05:02:22,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 123 flow [2020-10-16 05:02:22,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 109 flow, removed 2 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:22,030 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 99 flow [2020-10-16 05:02:22,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2020-10-16 05:02:22,030 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:02:22,031 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 99 flow [2020-10-16 05:02:22,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:22,031 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:22,031 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:22,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:02:22,031 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:22,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1278214402, now seen corresponding path program 1 times [2020-10-16 05:02:22,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:22,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512659157] [2020-10-16 05:02:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:22,077 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 05:02:22,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512659157] [2020-10-16 05:02:22,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:22,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:22,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820441514] [2020-10-16 05:02:22,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:22,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:22,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:22,081 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 05:02:22,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states. [2020-10-16 05:02:22,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:22,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 05:02:22,082 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,113 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-16 05:02:22,113 INFO L130 PetriNetUnfolder]: For 72/74 co-relation queries the response was YES. [2020-10-16 05:02:22,113 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 53 events. 4/53 cut-off events. For 72/74 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 182 event pairs, 0 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 139. Up to 17 conditions per place. [2020-10-16 05:02:22,114 INFO L132 encePairwiseOnDemand]: 107/112 looper letters, 7 selfloop transitions, 4 changer transitions 3/25 dead transitions. [2020-10-16 05:02:22,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 151 flow [2020-10-16 05:02:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2020-10-16 05:02:22,116 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7879464285714286 [2020-10-16 05:02:22,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2020-10-16 05:02:22,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2020-10-16 05:02:22,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2020-10-16 05:02:22,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:22,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:22,119 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:22,119 INFO L185 Difference]: Start difference. First operand has 36 places, 21 transitions, 99 flow. Second operand 4 states and 353 transitions. [2020-10-16 05:02:22,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 151 flow [2020-10-16 05:02:22,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 127 flow, removed 6 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:22,122 INFO L241 Difference]: Finished difference. Result has 34 places, 21 transitions, 96 flow [2020-10-16 05:02:22,122 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2020-10-16 05:02:22,123 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:02:22,123 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 96 flow [2020-10-16 05:02:22,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:22,123 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:22,123 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:22,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:02:22,124 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash -779927318, now seen corresponding path program 2 times [2020-10-16 05:02:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:22,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387856694] [2020-10-16 05:02:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:22,176 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 05:02:22,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387856694] [2020-10-16 05:02:22,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:22,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:22,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997777689] [2020-10-16 05:02:22,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:22,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:22,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:22,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:22,180 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:02:22,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 96 flow. Second operand 4 states. [2020-10-16 05:02:22,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:22,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:02:22,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,239 INFO L129 PetriNetUnfolder]: 63/141 cut-off events. [2020-10-16 05:02:22,239 INFO L130 PetriNetUnfolder]: For 286/328 co-relation queries the response was YES. [2020-10-16 05:02:22,241 INFO L80 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 141 events. 63/141 cut-off events. For 286/328 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 605 event pairs, 21 based on Foata normal form. 22/152 useless extension candidates. Maximal degree in co-relation 346. Up to 92 conditions per place. [2020-10-16 05:02:22,242 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 6 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2020-10-16 05:02:22,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 150 flow [2020-10-16 05:02:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:02:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:02:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 05:02:22,244 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 05:02:22,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 05:02:22,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 05:02:22,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 05:02:22,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:02:22,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:02:22,248 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:02:22,248 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 96 flow. Second operand 5 states and 423 transitions. [2020-10-16 05:02:22,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 150 flow [2020-10-16 05:02:22,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 135 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:22,251 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 121 flow [2020-10-16 05:02:22,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2020-10-16 05:02:22,251 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:02:22,251 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 121 flow [2020-10-16 05:02:22,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:22,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:22,252 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:22,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:02:22,252 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:22,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1137845321, now seen corresponding path program 1 times [2020-10-16 05:02:22,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:22,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842828781] [2020-10-16 05:02:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:22,309 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 05:02:22,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842828781] [2020-10-16 05:02:22,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:22,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:22,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200334486] [2020-10-16 05:02:22,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:02:22,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:22,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:02:22,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:02:22,315 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:02:22,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 121 flow. Second operand 5 states. [2020-10-16 05:02:22,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:22,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:02:22,324 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,387 INFO L129 PetriNetUnfolder]: 36/101 cut-off events. [2020-10-16 05:02:22,388 INFO L130 PetriNetUnfolder]: For 357/441 co-relation queries the response was YES. [2020-10-16 05:02:22,389 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 101 events. 36/101 cut-off events. For 357/441 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 408 event pairs, 3 based on Foata normal form. 38/135 useless extension candidates. Maximal degree in co-relation 368. Up to 73 conditions per place. [2020-10-16 05:02:22,390 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 6 selfloop transitions, 7 changer transitions 7/34 dead transitions. [2020-10-16 05:02:22,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 219 flow [2020-10-16 05:02:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:02:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:02:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 05:02:22,392 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 05:02:22,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 05:02:22,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 05:02:22,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 05:02:22,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:02:22,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:02:22,396 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:02:22,396 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 121 flow. Second operand 6 states and 507 transitions. [2020-10-16 05:02:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 219 flow [2020-10-16 05:02:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 211 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:02:22,400 INFO L241 Difference]: Finished difference. Result has 41 places, 27 transitions, 173 flow [2020-10-16 05:02:22,400 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2020-10-16 05:02:22,400 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:02:22,401 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 173 flow [2020-10-16 05:02:22,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:02:22,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:22,401 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:22,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:02:22,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1869514717, now seen corresponding path program 1 times [2020-10-16 05:02:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:22,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059151514] [2020-10-16 05:02:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:22,454 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 05:02:22,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059151514] [2020-10-16 05:02:22,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:22,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:02:22,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579174695] [2020-10-16 05:02:22,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:02:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:02:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:02:22,458 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:02:22,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 173 flow. Second operand 6 states. [2020-10-16 05:02:22,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:22,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:02:22,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,520 INFO L129 PetriNetUnfolder]: 16/63 cut-off events. [2020-10-16 05:02:22,520 INFO L130 PetriNetUnfolder]: For 319/388 co-relation queries the response was YES. [2020-10-16 05:02:22,521 INFO L80 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 63 events. 16/63 cut-off events. For 319/388 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 195 event pairs, 0 based on Foata normal form. 33/93 useless extension candidates. Maximal degree in co-relation 270. Up to 43 conditions per place. [2020-10-16 05:02:22,522 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 3 selfloop transitions, 10 changer transitions 4/30 dead transitions. [2020-10-16 05:02:22,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 239 flow [2020-10-16 05:02:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:02:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:02:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 05:02:22,525 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 05:02:22,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 05:02:22,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 05:02:22,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 05:02:22,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:02:22,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:02:22,529 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:02:22,529 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 173 flow. Second operand 7 states and 585 transitions. [2020-10-16 05:02:22,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 239 flow [2020-10-16 05:02:22,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 199 flow, removed 16 selfloop flow, removed 4 redundant places. [2020-10-16 05:02:22,533 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 171 flow [2020-10-16 05:02:22,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2020-10-16 05:02:22,533 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:02:22,534 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 171 flow [2020-10-16 05:02:22,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:02:22,534 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:22,534 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:22,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:02:22,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:22,535 INFO L82 PathProgramCache]: Analyzing trace with hash 263191936, now seen corresponding path program 1 times [2020-10-16 05:02:22,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:22,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998594562] [2020-10-16 05:02:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:22,569 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 05:02:22,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998594562] [2020-10-16 05:02:22,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:22,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:02:22,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899940302] [2020-10-16 05:02:22,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:02:22,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:22,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:02:22,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:02:22,573 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:02:22,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 171 flow. Second operand 4 states. [2020-10-16 05:02:22,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:22,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:02:22,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,597 INFO L129 PetriNetUnfolder]: 16/66 cut-off events. [2020-10-16 05:02:22,597 INFO L130 PetriNetUnfolder]: For 165/178 co-relation queries the response was YES. [2020-10-16 05:02:22,598 INFO L80 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 66 events. 16/66 cut-off events. For 165/178 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 213 event pairs, 0 based on Foata normal form. 3/63 useless extension candidates. Maximal degree in co-relation 222. Up to 33 conditions per place. [2020-10-16 05:02:22,598 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 1 changer transitions 3/26 dead transitions. [2020-10-16 05:02:22,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 171 flow [2020-10-16 05:02:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:02:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:02:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 362 transitions. [2020-10-16 05:02:22,601 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2020-10-16 05:02:22,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 362 transitions. [2020-10-16 05:02:22,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 362 transitions. [2020-10-16 05:02:22,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 362 transitions. [2020-10-16 05:02:22,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:02:22,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:02:22,603 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:02:22,604 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 171 flow. Second operand 4 states and 362 transitions. [2020-10-16 05:02:22,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 171 flow [2020-10-16 05:02:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 127 flow, removed 14 selfloop flow, removed 7 redundant places. [2020-10-16 05:02:22,606 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 111 flow [2020-10-16 05:02:22,606 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2020-10-16 05:02:22,607 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2020-10-16 05:02:22,607 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 111 flow [2020-10-16 05:02:22,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:02:22,607 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:02:22,607 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:02:22,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:02:22,608 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:02:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:02:22,608 INFO L82 PathProgramCache]: Analyzing trace with hash -958716652, now seen corresponding path program 2 times [2020-10-16 05:02:22,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:02:22,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964824379] [2020-10-16 05:02:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:02:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:02:22,637 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 05:02:22,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964824379] [2020-10-16 05:02:22,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:02:22,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:02:22,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595757578] [2020-10-16 05:02:22,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:02:22,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:02:22,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:02:22,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:02:22,640 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 05:02:22,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 111 flow. Second operand 3 states. [2020-10-16 05:02:22,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:02:22,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 05:02:22,641 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:02:22,654 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2020-10-16 05:02:22,654 INFO L130 PetriNetUnfolder]: For 35/38 co-relation queries the response was YES. [2020-10-16 05:02:22,655 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 40 events. 9/40 cut-off events. For 35/38 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 111. Up to 12 conditions per place. [2020-10-16 05:02:22,655 INFO L132 encePairwiseOnDemand]: 110/112 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 05:02:22,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 120 flow [2020-10-16 05:02:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:02:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:02:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2020-10-16 05:02:22,659 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8154761904761905 [2020-10-16 05:02:22,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2020-10-16 05:02:22,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2020-10-16 05:02:22,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:02:22,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2020-10-16 05:02:22,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:02:22,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:02:22,661 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:02:22,662 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 111 flow. Second operand 3 states and 274 transitions. [2020-10-16 05:02:22,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 23 transitions, 120 flow [2020-10-16 05:02:22,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 115 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:02:22,665 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2020-10-16 05:02:22,665 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2020-10-16 05:02:22,666 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:02:22,666 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2020-10-16 05:02:22,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:02:22,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:02:22,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:02:22 BasicIcfg [2020-10-16 05:02:22,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:02:22,679 INFO L168 Benchmark]: Toolchain (without parser) took 4454.90 ms. Allocated memory was 254.3 MB in the beginning and 372.2 MB in the end (delta: 118.0 MB). Free memory was 207.1 MB in the beginning and 208.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 116.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:22,680 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 254.3 MB. Free memory is still 228.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:02:22,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 851.15 ms. Allocated memory was 254.3 MB in the beginning and 321.9 MB in the end (delta: 67.6 MB). Free memory was 207.1 MB in the beginning and 277.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:22,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.73 ms. Allocated memory is still 321.9 MB. Free memory was 277.0 MB in the beginning and 274.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:22,683 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 321.9 MB. Free memory was 274.5 MB in the beginning and 272.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:22,686 INFO L168 Benchmark]: RCFGBuilder took 462.50 ms. Allocated memory is still 321.9 MB. Free memory was 272.0 MB in the beginning and 250.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:22,687 INFO L168 Benchmark]: TraceAbstraction took 3052.10 ms. Allocated memory was 321.9 MB in the beginning and 372.2 MB in the end (delta: 50.3 MB). Free memory was 250.1 MB in the beginning and 208.1 MB in the end (delta: 42.0 MB). Peak memory consumption was 92.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:02:22,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 254.3 MB. Free memory is still 228.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 851.15 ms. Allocated memory was 254.3 MB in the beginning and 321.9 MB in the end (delta: 67.6 MB). Free memory was 207.1 MB in the beginning and 277.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 55.73 ms. Allocated memory is still 321.9 MB. Free memory was 277.0 MB in the beginning and 274.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 321.9 MB. Free memory was 274.5 MB in the beginning and 272.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 462.50 ms. Allocated memory is still 321.9 MB. Free memory was 272.0 MB in the beginning and 250.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3052.10 ms. Allocated memory was 321.9 MB in the beginning and 372.2 MB in the end (delta: 50.3 MB). Free memory was 250.1 MB in the beginning and 208.1 MB in the end (delta: 42.0 MB). Peak memory consumption was 92.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 608 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 44 SDtfs, 21 SDslu, 20 SDs, 0 SdLazy, 132 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 3826 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...