/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 01:11:22,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 01:11:22,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 01:11:23,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 01:11:23,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 01:11:23,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 01:11:23,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 01:11:23,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 01:11:23,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 01:11:23,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 01:11:23,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 01:11:23,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 01:11:23,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 01:11:23,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 01:11:23,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 01:11:23,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 01:11:23,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 01:11:23,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 01:11:23,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 01:11:23,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 01:11:23,084 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-NoLbe-OGIterative.epf [2021-08-13 01:11:23,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 01:11:23,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 01:11:23,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 01:11:23,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 01:11:23,105 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 01:11:23,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 01:11:23,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 01:11:23,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 01:11:23,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 01:11:23,107 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 01:11:23,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 01:11:23,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 01:11:23,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 01:11:23,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 01:11:23,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 01:11:23,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 01:11:23,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 01:11:23,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 01:11:23,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 01:11:23,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 01:11:23,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 01:11:23,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 01:11:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 01:11:23,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 01:11:23,455 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 01:11:23,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-08-13 01:11:23,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fb31d8d/9934e8f94c9b4962b7dd1f79fd28ae66/FLAG272d04cef [2021-08-13 01:11:24,080 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 01:11:24,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2021-08-13 01:11:24,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fb31d8d/9934e8f94c9b4962b7dd1f79fd28ae66/FLAG272d04cef [2021-08-13 01:11:24,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fb31d8d/9934e8f94c9b4962b7dd1f79fd28ae66 [2021-08-13 01:11:24,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 01:11:24,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 01:11:24,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 01:11:24,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 01:11:24,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 01:11:24,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 01:11:24" (1/1) ... [2021-08-13 01:11:24,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3464e1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:24, skipping insertion in model container [2021-08-13 01:11:24,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 01:11:24" (1/1) ... [2021-08-13 01:11:24,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 01:11:24,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 01:11:24,696 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i[950,963] [2021-08-13 01:11:24,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 01:11:24,907 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 01:11:24,924 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i[950,963] [2021-08-13 01:11:24,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 01:11:25,041 INFO L208 MainTranslator]: Completed translation [2021-08-13 01:11:25,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25 WrapperNode [2021-08-13 01:11:25,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 01:11:25,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 01:11:25,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 01:11:25,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 01:11:25,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 01:11:25,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 01:11:25,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 01:11:25,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 01:11:25,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (1/1) ... [2021-08-13 01:11:25,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 01:11:25,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 01:11:25,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 01:11:25,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 01:11:25,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (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 [2021-08-13 01:11:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 01:11:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 01:11:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 01:11:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 01:11:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 01:11:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 01:11:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 01:11:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 01:11:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 01:11:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 01:11:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 01:11:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 01:11:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 01:11:25,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 01:11:25,179 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 01:11:25,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 01:11:25,573 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 01:11:25,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 01:11:25 BoogieIcfgContainer [2021-08-13 01:11:25,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 01:11:25,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 01:11:25,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 01:11:25,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 01:11:25,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 01:11:24" (1/3) ... [2021-08-13 01:11:25,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b1d36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 01:11:25, skipping insertion in model container [2021-08-13 01:11:25,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 01:11:25" (2/3) ... [2021-08-13 01:11:25,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b1d36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 01:11:25, skipping insertion in model container [2021-08-13 01:11:25,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 01:11:25" (3/3) ... [2021-08-13 01:11:25,583 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2021-08-13 01:11:25,588 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 01:11:25,589 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 01:11:25,590 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 01:11:25,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,622 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,623 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,624 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,626 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,626 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,632 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,632 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,633 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,642 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,642 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,645 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 01:11:25,649 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 01:11:25,671 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 01:11:25,700 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 01:11:25,700 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 01:11:25,700 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 01:11:25,700 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 01:11:25,700 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 01:11:25,700 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 01:11:25,701 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 01:11:25,701 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 01:11:25,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 01:11:25,768 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-13 01:11:25,769 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 01:11:25,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 01:11:25,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 01:11:25,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-08-13 01:11:25,811 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-08-13 01:11:25,811 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 01:11:25,812 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:25,812 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:25,814 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:25,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-08-13 01:11:25,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:25,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990058487] [2021-08-13 01:11:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:26,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:26,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:26,172 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 01:11:26,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 01:11:26,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:26,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:26,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:26,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:26,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990058487] [2021-08-13 01:11:26,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990058487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:26,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:26,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 01:11:26,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087559103] [2021-08-13 01:11:26,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 01:11:26,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:26,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 01:11:26,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 01:11:26,257 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-08-13 01:11:26,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:26,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-08-13 01:11:26,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:26,435 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2021-08-13 01:11:26,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 01:11:26,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 4/94 useless extension candidates. Maximal degree in co-relation 90. Up to 7 conditions per place. [2021-08-13 01:11:26,437 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-08-13 01:11:26,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-08-13 01:11:26,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 01:11:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 01:11:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-08-13 01:11:26,458 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-08-13 01:11:26,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-08-13 01:11:26,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-08-13 01:11:26,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:26,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-08-13 01:11:26,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,483 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,483 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2021-08-13 01:11:26,484 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 201 flow [2021-08-13 01:11:26,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,485 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:26,485 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:26,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 01:11:26,485 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1169777821, now seen corresponding path program 1 times [2021-08-13 01:11:26,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:26,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486660244] [2021-08-13 01:11:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:26,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:26,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:26,617 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 01:11:26,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 01:11:26,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:26,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:26,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:26,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:26,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486660244] [2021-08-13 01:11:26,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486660244] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:26,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:26,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 01:11:26,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764894404] [2021-08-13 01:11:26,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 01:11:26,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:26,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 01:11:26,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 01:11:26,656 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-08-13 01:11:26,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:26,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-08-13 01:11:26,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:26,882 INFO L129 PetriNetUnfolder]: 337/790 cut-off events. [2021-08-13 01:11:26,882 INFO L130 PetriNetUnfolder]: For 80/85 co-relation queries the response was YES. [2021-08-13 01:11:26,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1570 conditions, 790 events. 337/790 cut-off events. For 80/85 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4881 event pairs, 129 based on Foata normal form. 12/777 useless extension candidates. Maximal degree in co-relation 1536. Up to 271 conditions per place. [2021-08-13 01:11:26,889 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 11 selfloop transitions, 3 changer transitions 51/122 dead transitions. [2021-08-13 01:11:26,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 453 flow [2021-08-13 01:11:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 01:11:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 01:11:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 665 transitions. [2021-08-13 01:11:26,892 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8796296296296297 [2021-08-13 01:11:26,892 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 665 transitions. [2021-08-13 01:11:26,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 665 transitions. [2021-08-13 01:11:26,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:26,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 665 transitions. [2021-08-13 01:11:26,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.88888888888889) internal successors, (665), 9 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,897 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2021-08-13 01:11:26,897 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 122 transitions, 453 flow [2021-08-13 01:11:26,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:26,898 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:26,898 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:26,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 01:11:26,898 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:26,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:26,899 INFO L82 PathProgramCache]: Analyzing trace with hash -643084036, now seen corresponding path program 1 times [2021-08-13 01:11:26,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:26,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093436980] [2021-08-13 01:11:26,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:26,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:26,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:26,966 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 01:11:26,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 01:11:26,977 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 01:11:26,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 01:11:26,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:26,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:27,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:27,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:27,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:27,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093436980] [2021-08-13 01:11:27,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093436980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:27,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:27,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 01:11:27,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198911592] [2021-08-13 01:11:27,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 01:11:27,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:27,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 01:11:27,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 01:11:27,015 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-08-13 01:11:27,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 122 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:27,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:27,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-08-13 01:11:27,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:27,656 INFO L129 PetriNetUnfolder]: 1162/2552 cut-off events. [2021-08-13 01:11:27,657 INFO L130 PetriNetUnfolder]: For 702/2423 co-relation queries the response was YES. [2021-08-13 01:11:27,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6668 conditions, 2552 events. 1162/2552 cut-off events. For 702/2423 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 19603 event pairs, 24 based on Foata normal form. 30/2546 useless extension candidates. Maximal degree in co-relation 6627. Up to 882 conditions per place. [2021-08-13 01:11:27,672 INFO L132 encePairwiseOnDemand]: 70/84 looper letters, 30 selfloop transitions, 15 changer transitions 222/318 dead transitions. [2021-08-13 01:11:27,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 318 transitions, 1949 flow [2021-08-13 01:11:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 01:11:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 01:11:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1189 transitions. [2021-08-13 01:11:27,676 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8326330532212886 [2021-08-13 01:11:27,676 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1189 transitions. [2021-08-13 01:11:27,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1189 transitions. [2021-08-13 01:11:27,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:27,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1189 transitions. [2021-08-13 01:11:27,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 69.94117647058823) internal successors, (1189), 17 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:27,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:27,684 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:27,684 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2021-08-13 01:11:27,684 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 318 transitions, 1949 flow [2021-08-13 01:11:27,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:27,685 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:27,685 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:27,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 01:11:27,685 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:27,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:27,686 INFO L82 PathProgramCache]: Analyzing trace with hash -451847074, now seen corresponding path program 1 times [2021-08-13 01:11:27,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:27,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545910330] [2021-08-13 01:11:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:27,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:27,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:27,744 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 01:11:27,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 01:11:27,760 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 01:11:27,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 01:11:27,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:27,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:27,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:27,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:27,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:27,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545910330] [2021-08-13 01:11:27,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545910330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:27,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:27,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 01:11:27,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313574735] [2021-08-13 01:11:27,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 01:11:27,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:27,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 01:11:27,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 01:11:27,844 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 01:11:27,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 318 transitions, 1949 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:27,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:27,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 01:11:27,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:28,419 INFO L129 PetriNetUnfolder]: 1232/2741 cut-off events. [2021-08-13 01:11:28,419 INFO L130 PetriNetUnfolder]: For 1459/6288 co-relation queries the response was YES. [2021-08-13 01:11:28,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8928 conditions, 2741 events. 1232/2741 cut-off events. For 1459/6288 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 21620 event pairs, 3 based on Foata normal form. 36/2751 useless extension candidates. Maximal degree in co-relation 8881. Up to 981 conditions per place. [2021-08-13 01:11:28,432 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 33 selfloop transitions, 11 changer transitions 545/643 dead transitions. [2021-08-13 01:11:28,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 643 transitions, 5409 flow [2021-08-13 01:11:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 01:11:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 01:11:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 01:11:28,435 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8388278388278388 [2021-08-13 01:11:28,435 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 01:11:28,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 01:11:28,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:28,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 01:11:28,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:28,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:28,441 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:28,441 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2021-08-13 01:11:28,441 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 643 transitions, 5409 flow [2021-08-13 01:11:28,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:28,441 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:28,441 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:28,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 01:11:28,442 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:28,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1173107605, now seen corresponding path program 1 times [2021-08-13 01:11:28,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:28,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070359135] [2021-08-13 01:11:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:28,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:28,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:28,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:28,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:28,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:28,493 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 01:11:28,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 01:11:28,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:28,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:28,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:28,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:28,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:28,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:28,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:28,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070359135] [2021-08-13 01:11:28,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070359135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:28,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:28,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 01:11:28,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209987738] [2021-08-13 01:11:28,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 01:11:28,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:28,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 01:11:28,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 01:11:28,527 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 01:11:28,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 643 transitions, 5409 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:28,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:28,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 01:11:28,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:29,220 INFO L129 PetriNetUnfolder]: 1345/3007 cut-off events. [2021-08-13 01:11:29,220 INFO L130 PetriNetUnfolder]: For 3427/13978 co-relation queries the response was YES. [2021-08-13 01:11:29,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11291 conditions, 3007 events. 1345/3007 cut-off events. For 3427/13978 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 24386 event pairs, 3 based on Foata normal form. 55/3034 useless extension candidates. Maximal degree in co-relation 11240. Up to 1169 conditions per place. [2021-08-13 01:11:29,235 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 10 selfloop transitions, 6 changer transitions 624/705 dead transitions. [2021-08-13 01:11:29,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 705 transitions, 6851 flow [2021-08-13 01:11:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 01:11:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 01:11:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 943 transitions. [2021-08-13 01:11:29,238 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8635531135531136 [2021-08-13 01:11:29,239 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 943 transitions. [2021-08-13 01:11:29,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 943 transitions. [2021-08-13 01:11:29,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:29,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 943 transitions. [2021-08-13 01:11:29,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:29,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:29,244 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:29,244 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 56 predicate places. [2021-08-13 01:11:29,244 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 705 transitions, 6851 flow [2021-08-13 01:11:29,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:29,245 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:29,245 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:29,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 01:11:29,245 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:29,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash -381815481, now seen corresponding path program 1 times [2021-08-13 01:11:29,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:29,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13387691] [2021-08-13 01:11:29,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:29,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:29,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:29,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:29,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:29,287 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 01:11:29,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 01:11:29,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:29,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 01:11:29,307 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 01:11:29,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:29,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:29,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:29,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:29,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13387691] [2021-08-13 01:11:29,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13387691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:29,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:29,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 01:11:29,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136305790] [2021-08-13 01:11:29,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 01:11:29,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:29,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 01:11:29,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 01:11:29,317 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 01:11:29,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 705 transitions, 6851 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:29,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:29,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 01:11:29,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:30,115 INFO L129 PetriNetUnfolder]: 1395/3608 cut-off events. [2021-08-13 01:11:30,115 INFO L130 PetriNetUnfolder]: For 2124/2650 co-relation queries the response was YES. [2021-08-13 01:11:30,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 3608 events. 1395/3608 cut-off events. For 2124/2650 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 34019 event pairs, 27 based on Foata normal form. 24/3397 useless extension candidates. Maximal degree in co-relation 10803. Up to 1159 conditions per place. [2021-08-13 01:11:30,146 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 24 selfloop transitions, 17 changer transitions 328/528 dead transitions. [2021-08-13 01:11:30,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 528 transitions, 4809 flow [2021-08-13 01:11:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 01:11:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 01:11:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-08-13 01:11:30,149 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-08-13 01:11:30,149 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-08-13 01:11:30,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-08-13 01:11:30,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:30,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-08-13 01:11:30,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,153 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,154 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 65 predicate places. [2021-08-13 01:11:30,154 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 528 transitions, 4809 flow [2021-08-13 01:11:30,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,154 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:30,154 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:30,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 01:11:30,154 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:30,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:30,155 INFO L82 PathProgramCache]: Analyzing trace with hash 652696242, now seen corresponding path program 1 times [2021-08-13 01:11:30,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:30,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157605552] [2021-08-13 01:11:30,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:30,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:30,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:30,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:30,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:30,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:30,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:30,239 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 01:11:30,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 01:11:30,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:30,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 01:11:30,262 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 01:11:30,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:30,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:30,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:30,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:30,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157605552] [2021-08-13 01:11:30,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157605552] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:30,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:30,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 01:11:30,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582927228] [2021-08-13 01:11:30,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 01:11:30,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:30,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 01:11:30,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 01:11:30,280 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 01:11:30,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 528 transitions, 4809 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:30,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 01:11:30,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:30,908 INFO L129 PetriNetUnfolder]: 758/2191 cut-off events. [2021-08-13 01:11:30,908 INFO L130 PetriNetUnfolder]: For 797/2040 co-relation queries the response was YES. [2021-08-13 01:11:30,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6278 conditions, 2191 events. 758/2191 cut-off events. For 797/2040 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 20697 event pairs, 1 based on Foata normal form. 240/2260 useless extension candidates. Maximal degree in co-relation 6221. Up to 570 conditions per place. [2021-08-13 01:11:30,931 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 17 selfloop transitions, 44 changer transitions 154/292 dead transitions. [2021-08-13 01:11:30,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 292 transitions, 2269 flow [2021-08-13 01:11:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 01:11:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 01:11:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-08-13 01:11:30,935 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8855311355311355 [2021-08-13 01:11:30,935 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-08-13 01:11:30,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-08-13 01:11:30,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:30,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-08-13 01:11:30,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,940 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,940 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 71 predicate places. [2021-08-13 01:11:30,940 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 292 transitions, 2269 flow [2021-08-13 01:11:30,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:30,941 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 01:11:30,941 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 01:11:30,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 01:11:30,941 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 01:11:30,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 01:11:30,942 INFO L82 PathProgramCache]: Analyzing trace with hash 329767965, now seen corresponding path program 1 times [2021-08-13 01:11:30,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 01:11:30,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121461140] [2021-08-13 01:11:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 01:11:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 01:11:31,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:31,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:31,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:31,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:31,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:31,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:31,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:31,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 01:11:31,024 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 01:11:31,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 01:11:31,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:31,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 01:11:31,047 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 01:11:31,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 01:11:31,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 01:11:31,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 01:11:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 01:11:31,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 01:11:31,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121461140] [2021-08-13 01:11:31,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121461140] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 01:11:31,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 01:11:31,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 01:11:31,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657179979] [2021-08-13 01:11:31,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 01:11:31,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 01:11:31,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 01:11:31,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 01:11:31,071 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 01:11:31,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 292 transitions, 2269 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:31,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 01:11:31,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 01:11:31,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 01:11:31,572 INFO L129 PetriNetUnfolder]: 676/1891 cut-off events. [2021-08-13 01:11:31,572 INFO L130 PetriNetUnfolder]: For 783/2551 co-relation queries the response was YES. [2021-08-13 01:11:31,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6338 conditions, 1891 events. 676/1891 cut-off events. For 783/2551 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 18172 event pairs, 1 based on Foata normal form. 279/2019 useless extension candidates. Maximal degree in co-relation 6278. Up to 526 conditions per place. [2021-08-13 01:11:31,586 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 0 selfloop transitions, 0 changer transitions 201/201 dead transitions. [2021-08-13 01:11:31,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 201 transitions, 1443 flow [2021-08-13 01:11:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 01:11:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 01:11:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1176 transitions. [2021-08-13 01:11:31,590 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 01:11:31,590 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1176 transitions. [2021-08-13 01:11:31,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1176 transitions. [2021-08-13 01:11:31,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 01:11:31,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1176 transitions. [2021-08-13 01:11:31,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.5) internal successors, (1176), 16 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:31,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:31,598 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:31,598 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 57 predicate places. [2021-08-13 01:11:31,598 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 201 transitions, 1443 flow [2021-08-13 01:11:31,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 01:11:31,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown