/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-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 16:04:56,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 16:04:56,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 16:04:56,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 16:04:56,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 16:04:56,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 16:04:56,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 16:04:56,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 16:04:56,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 16:04:56,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 16:04:56,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 16:04:56,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 16:04:56,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 16:04:56,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 16:04:56,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 16:04:56,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 16:04:56,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 16:04:56,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 16:04:56,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 16:04:56,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 16:04:56,441 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-CovSimpl-Hitting.epf [2021-08-13 16:04:56,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 16:04:56,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 16:04:56,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 16:04:56,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 16:04:56,470 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 16:04:56,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 16:04:56,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 16:04:56,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 16:04:56,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 16:04:56,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 16:04:56,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 16:04:56,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 16:04:56,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 16:04:56,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:04:56,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 16:04:56,473 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 16:04:56,474 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 16:04:56,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 16:04:56,474 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 16:04:56,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 16:04:56,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 16:04:56,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 16:04:56,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 16:04:56,739 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 16:04:56,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-08-13 16:04:56,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b04362116/a30eedcc1e3749498ad9485105f6f598/FLAG88ff49b1f [2021-08-13 16:04:57,288 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 16:04:57,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-08-13 16:04:57,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b04362116/a30eedcc1e3749498ad9485105f6f598/FLAG88ff49b1f [2021-08-13 16:04:57,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b04362116/a30eedcc1e3749498ad9485105f6f598 [2021-08-13 16:04:57,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 16:04:57,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 16:04:57,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 16:04:57,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 16:04:57,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 16:04:57,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:04:57" (1/1) ... [2021-08-13 16:04:57,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13aba61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:57, skipping insertion in model container [2021-08-13 16:04:57,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:04:57" (1/1) ... [2021-08-13 16:04:57,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 16:04:57,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 16:04:57,947 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/safe015_tso.oepc.i[950,963] [2021-08-13 16:04:58,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:04:58,108 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 16:04:58,119 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/safe015_tso.oepc.i[950,963] [2021-08-13 16:04:58,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:04:58,213 INFO L208 MainTranslator]: Completed translation [2021-08-13 16:04:58,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58 WrapperNode [2021-08-13 16:04:58,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 16:04:58,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 16:04:58,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 16:04:58,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 16:04:58,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 16:04:58,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 16:04:58,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 16:04:58,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 16:04:58,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (1/1) ... [2021-08-13 16:04:58,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 16:04:58,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 16:04:58,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 16:04:58,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 16:04:58,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (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 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 16:04:58,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 16:04:58,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 16:04:58,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 16:04:58,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 16:04:58,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 16:04:58,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 16:04:58,335 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 16:04:58,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 16:04:58,616 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 16:04:58,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:04:58 BoogieIcfgContainer [2021-08-13 16:04:58,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 16:04:58,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 16:04:58,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 16:04:58,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 16:04:58,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 04:04:57" (1/3) ... [2021-08-13 16:04:58,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654793eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:04:58, skipping insertion in model container [2021-08-13 16:04:58,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:04:58" (2/3) ... [2021-08-13 16:04:58,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654793eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:04:58, skipping insertion in model container [2021-08-13 16:04:58,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:04:58" (3/3) ... [2021-08-13 16:04:58,622 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-08-13 16:04:58,626 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 16:04:58,627 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 16:04:58,627 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 16:04:58,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,652 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,652 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,655 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,656 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,656 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,657 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,657 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,657 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,657 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:04:58,658 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 16:04:58,673 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 16:04:58,687 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 16:04:58,687 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 16:04:58,687 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 16:04:58,688 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 16:04:58,688 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 16:04:58,688 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 16:04:58,688 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 16:04:58,688 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 16:04:58,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 16:04:58,719 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-13 16:04:58,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:04:58,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 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. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 16:04:58,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 16:04:58,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-08-13 16:04:58,737 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-08-13 16:04:58,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:04:58,737 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:04:58,738 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] [2021-08-13 16:04:58,738 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:04:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:04:58,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-08-13 16:04:58,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:04:58,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067494534] [2021-08-13 16:04:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:04:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:04:59,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:04:59,077 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 16:04:59,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 16:04:59,089 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:04:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:04:59,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:04:59,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:04:59,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:04:59,119 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 16:04:59,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:04:59,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067494534] [2021-08-13 16:04:59,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067494534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:04:59,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:04:59,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:04:59,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145190897] [2021-08-13 16:04:59,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:04:59,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:04:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:04:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:04:59,160 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 16:04:59,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 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 16:04:59,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:04:59,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 16:04:59,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:04:59,545 INFO L129 PetriNetUnfolder]: 645/1449 cut-off events. [2021-08-13 16:04:59,545 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:04:59,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 1449 events. 645/1449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9747 event pairs, 136 based on Foata normal form. 48/1456 useless extension candidates. Maximal degree in co-relation 2456. Up to 305 conditions per place. [2021-08-13 16:04:59,558 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 19 selfloop transitions, 7 changer transitions 43/120 dead transitions. [2021-08-13 16:04:59,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 120 transitions, 387 flow [2021-08-13 16:04:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 16:04:59,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 16:04:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 640 transitions. [2021-08-13 16:04:59,575 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.856760374832664 [2021-08-13 16:04:59,575 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 640 transitions. [2021-08-13 16:04:59,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 640 transitions. [2021-08-13 16:04:59,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:04:59,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 640 transitions. [2021-08-13 16:04:59,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.11111111111111) internal successors, (640), 9 states have internal predecessors, (640), 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 16:04:59,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:04:59,591 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:04:59,592 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2021-08-13 16:04:59,592 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 120 transitions, 387 flow [2021-08-13 16:04:59,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 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 16:04:59,592 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:04:59,592 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] [2021-08-13 16:04:59,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 16:04:59,593 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:04:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:04:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1466580262, now seen corresponding path program 1 times [2021-08-13 16:04:59,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:04:59,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873431395] [2021-08-13 16:04:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:04:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:04:59,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:04:59,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:04:59,704 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 16:04:59,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 16:04:59,717 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:04:59,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:04:59,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:04:59,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:04:59,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:04:59,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:04:59,751 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 16:04:59,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:04:59,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873431395] [2021-08-13 16:04:59,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873431395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:04:59,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:04:59,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:04:59,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952839940] [2021-08-13 16:04:59,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:04:59,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:04:59,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:04:59,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:04:59,755 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 16:04:59,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 120 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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 16:04:59,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:04:59,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 16:04:59,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:00,143 INFO L129 PetriNetUnfolder]: 713/1670 cut-off events. [2021-08-13 16:05:00,144 INFO L130 PetriNetUnfolder]: For 49/1157 co-relation queries the response was YES. [2021-08-13 16:05:00,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 1670 events. 713/1670 cut-off events. For 49/1157 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12027 event pairs, 15 based on Foata normal form. 38/1671 useless extension candidates. Maximal degree in co-relation 3979. Up to 371 conditions per place. [2021-08-13 16:05:00,153 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 25 selfloop transitions, 9 changer transitions 147/232 dead transitions. [2021-08-13 16:05:00,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 232 transitions, 1197 flow [2021-08-13 16:05:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:05:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:05:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-08-13 16:05:00,156 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8405931417979611 [2021-08-13 16:05:00,156 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-08-13 16:05:00,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-08-13 16:05:00,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:00,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-08-13 16:05:00,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 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 16:05:00,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:00,160 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:00,161 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2021-08-13 16:05:00,161 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 232 transitions, 1197 flow [2021-08-13 16:05:00,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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 16:05:00,161 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:00,161 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 16:05:00,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 16:05:00,162 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1161954026, now seen corresponding path program 1 times [2021-08-13 16:05:00,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:00,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583840281] [2021-08-13 16:05:00,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:00,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:00,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:00,247 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:05:00,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:05:00,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:00,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:00,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:00,275 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 16:05:00,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:00,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583840281] [2021-08-13 16:05:00,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583840281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:00,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:00,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:05:00,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020480037] [2021-08-13 16:05:00,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:05:00,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:05:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:05:00,277 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-08-13 16:05:00,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 232 transitions, 1197 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 16:05:00,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:00,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-08-13 16:05:00,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:00,574 INFO L129 PetriNetUnfolder]: 1018/2499 cut-off events. [2021-08-13 16:05:00,575 INFO L130 PetriNetUnfolder]: For 534/1692 co-relation queries the response was YES. [2021-08-13 16:05:00,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6846 conditions, 2499 events. 1018/2499 cut-off events. For 534/1692 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 20837 event pairs, 18 based on Foata normal form. 20/2486 useless extension candidates. Maximal degree in co-relation 6804. Up to 544 conditions per place. [2021-08-13 16:05:00,584 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 17 selfloop transitions, 8 changer transitions 289/380 dead transitions. [2021-08-13 16:05:00,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 380 transitions, 2569 flow [2021-08-13 16:05:00,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 16:05:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 16:05:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2021-08-13 16:05:00,586 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8862115127175368 [2021-08-13 16:05:00,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2021-08-13 16:05:00,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2021-08-13 16:05:00,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:00,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2021-08-13 16:05:00,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 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 16:05:00,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:05:00,589 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:05:00,589 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2021-08-13 16:05:00,589 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 380 transitions, 2569 flow [2021-08-13 16:05:00,590 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 16:05:00,590 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:00,590 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] [2021-08-13 16:05:00,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 16:05:00,590 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1088836325, now seen corresponding path program 1 times [2021-08-13 16:05:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:00,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939109819] [2021-08-13 16:05:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:00,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:00,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:00,624 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:05:00,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:05:00,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:00,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:00,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:00,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:00,648 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 16:05:00,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:00,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939109819] [2021-08-13 16:05:00,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939109819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:00,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:00,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:05:00,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806742826] [2021-08-13 16:05:00,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:05:00,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:05:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:05:00,650 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-08-13 16:05:00,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 380 transitions, 2569 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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 16:05:00,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:00,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-08-13 16:05:00,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:00,946 INFO L129 PetriNetUnfolder]: 1289/3063 cut-off events. [2021-08-13 16:05:00,946 INFO L130 PetriNetUnfolder]: For 1388/3127 co-relation queries the response was YES. [2021-08-13 16:05:00,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9646 conditions, 3063 events. 1289/3063 cut-off events. For 1388/3127 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 26479 event pairs, 29 based on Foata normal form. 19/3055 useless extension candidates. Maximal degree in co-relation 9601. Up to 752 conditions per place. [2021-08-13 16:05:00,957 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 10 selfloop transitions, 5 changer transitions 406/497 dead transitions. [2021-08-13 16:05:00,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 497 transitions, 3975 flow [2021-08-13 16:05:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 16:05:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 16:05:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2021-08-13 16:05:00,959 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8821954484605087 [2021-08-13 16:05:00,959 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2021-08-13 16:05:00,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2021-08-13 16:05:00,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:00,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2021-08-13 16:05:00,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 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 16:05:00,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:05:00,962 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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 16:05:00,962 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2021-08-13 16:05:00,962 INFO L482 AbstractCegarLoop]: Abstraction has has 113 places, 497 transitions, 3975 flow [2021-08-13 16:05:00,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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 16:05:00,962 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:00,962 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] [2021-08-13 16:05:00,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 16:05:00,963 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:00,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:00,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1065924166, now seen corresponding path program 1 times [2021-08-13 16:05:00,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:00,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313482873] [2021-08-13 16:05:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:01,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:01,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:01,020 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 16:05:01,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 16:05:01,033 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:05:01,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:05:01,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:01,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:01,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:01,061 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 16:05:01,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:01,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313482873] [2021-08-13 16:05:01,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313482873] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:01,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:01,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:05:01,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936324116] [2021-08-13 16:05:01,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:05:01,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:05:01,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:05:01,064 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 16:05:01,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 497 transitions, 3975 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 16:05:01,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:01,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 16:05:01,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:01,541 INFO L129 PetriNetUnfolder]: 1347/3221 cut-off events. [2021-08-13 16:05:01,541 INFO L130 PetriNetUnfolder]: For 1640/6569 co-relation queries the response was YES. [2021-08-13 16:05:01,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12632 conditions, 3221 events. 1347/3221 cut-off events. For 1640/6569 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 28422 event pairs, 5 based on Foata normal form. 44/3245 useless extension candidates. Maximal degree in co-relation 12581. Up to 848 conditions per place. [2021-08-13 16:05:01,554 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 33 selfloop transitions, 16 changer transitions 651/751 dead transitions. [2021-08-13 16:05:01,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 751 transitions, 7569 flow [2021-08-13 16:05:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:05:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:05:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 910 transitions. [2021-08-13 16:05:01,556 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8433734939759037 [2021-08-13 16:05:01,556 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 910 transitions. [2021-08-13 16:05:01,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 910 transitions. [2021-08-13 16:05:01,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:01,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 910 transitions. [2021-08-13 16:05:01,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 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 16:05:01,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:01,561 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:01,561 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2021-08-13 16:05:01,562 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 751 transitions, 7569 flow [2021-08-13 16:05:01,563 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 16:05:01,563 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:01,563 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] [2021-08-13 16:05:01,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 16:05:01,564 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:01,564 INFO L82 PathProgramCache]: Analyzing trace with hash -585148963, now seen corresponding path program 1 times [2021-08-13 16:05:01,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:01,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026793466] [2021-08-13 16:05:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:01,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:01,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:01,638 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 16:05:01,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 16:05:01,648 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:05:01,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:05:01,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:01,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:01,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:01,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:01,685 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 16:05:01,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:01,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026793466] [2021-08-13 16:05:01,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026793466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:01,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:01,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:05:01,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824605551] [2021-08-13 16:05:01,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:05:01,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:01,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:05:01,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:05:01,688 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 16:05:01,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 751 transitions, 7569 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 16:05:01,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:01,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 16:05:01,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:02,328 INFO L129 PetriNetUnfolder]: 1419/3651 cut-off events. [2021-08-13 16:05:02,328 INFO L130 PetriNetUnfolder]: For 2106/12559 co-relation queries the response was YES. [2021-08-13 16:05:02,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16728 conditions, 3651 events. 1419/3651 cut-off events. For 2106/12559 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 34728 event pairs, 4 based on Foata normal form. 49/3681 useless extension candidates. Maximal degree in co-relation 16671. Up to 943 conditions per place. [2021-08-13 16:05:02,344 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 29 selfloop transitions, 21 changer transitions 827/928 dead transitions. [2021-08-13 16:05:02,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 928 transitions, 11281 flow [2021-08-13 16:05:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:05:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:05:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 915 transitions. [2021-08-13 16:05:02,347 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8480074142724745 [2021-08-13 16:05:02,347 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 915 transitions. [2021-08-13 16:05:02,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 915 transitions. [2021-08-13 16:05:02,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:02,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 915 transitions. [2021-08-13 16:05:02,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.38461538461539) internal successors, (915), 13 states have internal predecessors, (915), 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 16:05:02,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:02,352 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:02,352 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 60 predicate places. [2021-08-13 16:05:02,352 INFO L482 AbstractCegarLoop]: Abstraction has has 137 places, 928 transitions, 11281 flow [2021-08-13 16:05:02,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 16:05:02,352 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:02,352 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] [2021-08-13 16:05:02,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 16:05:02,352 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:02,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1167341072, now seen corresponding path program 1 times [2021-08-13 16:05:02,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:02,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711209532] [2021-08-13 16:05:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:02,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:02,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:02,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:02,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:02,410 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:05:02,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:05:02,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:02,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:05:02,432 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:05:02,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:02,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:02,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:02,441 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 16:05:02,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:02,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711209532] [2021-08-13 16:05:02,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711209532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:02,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:02,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:05:02,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347751670] [2021-08-13 16:05:02,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:05:02,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:02,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:05:02,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:05:02,444 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 16:05:02,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 928 transitions, 11281 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 16:05:02,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:02,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 16:05:02,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:02,996 INFO L129 PetriNetUnfolder]: 1276/3628 cut-off events. [2021-08-13 16:05:02,997 INFO L130 PetriNetUnfolder]: For 2085/2873 co-relation queries the response was YES. [2021-08-13 16:05:03,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11938 conditions, 3628 events. 1276/3628 cut-off events. For 2085/2873 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35989 event pairs, 45 based on Foata normal form. 21/3398 useless extension candidates. Maximal degree in co-relation 11878. Up to 828 conditions per place. [2021-08-13 16:05:03,017 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 24 selfloop transitions, 17 changer transitions 207/495 dead transitions. [2021-08-13 16:05:03,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 495 transitions, 5421 flow [2021-08-13 16:05:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 16:05:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 16:05:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-08-13 16:05:03,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-08-13 16:05:03,019 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-08-13 16:05:03,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-08-13 16:05:03,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:03,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-08-13 16:05:03,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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 16:05:03,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 16:05:03,021 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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 16:05:03,021 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 69 predicate places. [2021-08-13 16:05:03,022 INFO L482 AbstractCegarLoop]: Abstraction has has 146 places, 495 transitions, 5421 flow [2021-08-13 16:05:03,022 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 16:05:03,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:03,022 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 16:05:03,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 16:05:03,022 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:03,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1834755013, now seen corresponding path program 1 times [2021-08-13 16:05:03,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:03,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798943642] [2021-08-13 16:05:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:03,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:03,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,052 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:05:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:05:03,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:05:03,070 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:05:03,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:03,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:03,078 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 16:05:03,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:03,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798943642] [2021-08-13 16:05:03,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798943642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:03,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:03,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:05:03,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589734390] [2021-08-13 16:05:03,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:05:03,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:03,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:05:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:05:03,079 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 16:05:03,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 495 transitions, 5421 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 16:05:03,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:03,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 16:05:03,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:03,427 INFO L129 PetriNetUnfolder]: 766/2086 cut-off events. [2021-08-13 16:05:03,428 INFO L130 PetriNetUnfolder]: For 896/2381 co-relation queries the response was YES. [2021-08-13 16:05:03,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 2086 events. 766/2086 cut-off events. For 896/2381 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 18667 event pairs, 0 based on Foata normal form. 243/2156 useless extension candidates. Maximal degree in co-relation 6478. Up to 591 conditions per place. [2021-08-13 16:05:03,438 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 22 selfloop transitions, 44 changer transitions 126/289 dead transitions. [2021-08-13 16:05:03,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 289 transitions, 2629 flow [2021-08-13 16:05:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:05:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:05:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-08-13 16:05:03,440 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-08-13 16:05:03,440 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-08-13 16:05:03,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-08-13 16:05:03,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:03,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-08-13 16:05:03,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 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 16:05:03,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:03,443 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:03,444 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2021-08-13 16:05:03,444 INFO L482 AbstractCegarLoop]: Abstraction has has 152 places, 289 transitions, 2629 flow [2021-08-13 16:05:03,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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 16:05:03,444 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:03,444 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 16:05:03,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 16:05:03,444 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:03,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:03,445 INFO L82 PathProgramCache]: Analyzing trace with hash 970757710, now seen corresponding path program 1 times [2021-08-13 16:05:03,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:03,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536533961] [2021-08-13 16:05:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:03,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:03,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,473 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:05:03,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:05:03,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:03,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:03,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:03,499 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 16:05:03,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:03,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536533961] [2021-08-13 16:05:03,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536533961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:03,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:03,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:05:03,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257086195] [2021-08-13 16:05:03,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:05:03,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:05:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:05:03,501 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-08-13 16:05:03,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 289 transitions, 2629 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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 16:05:03,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:03,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-08-13 16:05:03,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:03,899 INFO L129 PetriNetUnfolder]: 1343/3733 cut-off events. [2021-08-13 16:05:03,899 INFO L130 PetriNetUnfolder]: For 1982/3026 co-relation queries the response was YES. [2021-08-13 16:05:03,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11750 conditions, 3733 events. 1343/3733 cut-off events. For 1982/3026 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 38179 event pairs, 0 based on Foata normal form. 29/3486 useless extension candidates. Maximal degree in co-relation 11683. Up to 1051 conditions per place. [2021-08-13 16:05:03,918 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 35 selfloop transitions, 9 changer transitions 192/363 dead transitions. [2021-08-13 16:05:03,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 363 transitions, 3955 flow [2021-08-13 16:05:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:05:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:05:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 911 transitions. [2021-08-13 16:05:03,920 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8443002780352178 [2021-08-13 16:05:03,920 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 911 transitions. [2021-08-13 16:05:03,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 911 transitions. [2021-08-13 16:05:03,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:03,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 911 transitions. [2021-08-13 16:05:03,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.07692307692308) internal successors, (911), 13 states have internal predecessors, (911), 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 16:05:03,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:03,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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 16:05:03,924 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 87 predicate places. [2021-08-13 16:05:03,924 INFO L482 AbstractCegarLoop]: Abstraction has has 164 places, 363 transitions, 3955 flow [2021-08-13 16:05:03,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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 16:05:03,924 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:03,924 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 16:05:03,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 16:05:03,925 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash -797308166, now seen corresponding path program 2 times [2021-08-13 16:05:03,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:03,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088207888] [2021-08-13 16:05:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:03,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:03,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:03,960 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:05:03,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:05:03,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:05:03,980 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:05:03,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:03,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:03,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:03,988 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 16:05:03,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:03,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088207888] [2021-08-13 16:05:03,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088207888] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:03,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:03,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 16:05:03,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477066279] [2021-08-13 16:05:03,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 16:05:03,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 16:05:03,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 16:05:03,990 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 16:05:03,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 363 transitions, 3955 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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 16:05:03,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:03,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 16:05:03,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:04,544 INFO L129 PetriNetUnfolder]: 1217/3234 cut-off events. [2021-08-13 16:05:04,544 INFO L130 PetriNetUnfolder]: For 1292/4548 co-relation queries the response was YES. [2021-08-13 16:05:04,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 3234 events. 1217/3234 cut-off events. For 1292/4548 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 33262 event pairs, 0 based on Foata normal form. 467/3466 useless extension candidates. Maximal degree in co-relation 11053. Up to 966 conditions per place. [2021-08-13 16:05:04,554 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 4 selfloop transitions, 12 changer transitions 163/235 dead transitions. [2021-08-13 16:05:04,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 235 transitions, 2137 flow [2021-08-13 16:05:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 16:05:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 16:05:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2021-08-13 16:05:04,556 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8734939759036144 [2021-08-13 16:05:04,556 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2021-08-13 16:05:04,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2021-08-13 16:05:04,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:04,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2021-08-13 16:05:04,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 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 16:05:04,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 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 16:05:04,560 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 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 16:05:04,560 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2021-08-13 16:05:04,560 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 235 transitions, 2137 flow [2021-08-13 16:05:04,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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 16:05:04,560 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:05:04,561 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, 1] [2021-08-13 16:05:04,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 16:05:04,561 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:05:04,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:05:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1699020165, now seen corresponding path program 1 times [2021-08-13 16:05:04,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:05:04,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953996397] [2021-08-13 16:05:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:05:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:05:04,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:04,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:04,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:04,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:04,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:04,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:05:04,596 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:05:04,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:05:04,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:04,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:04,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:04,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:05:04,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:05:04,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:05:04,622 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 16:05:04,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:05:04,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953996397] [2021-08-13 16:05:04,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953996397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:05:04,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:05:04,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:05:04,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539304937] [2021-08-13 16:05:04,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:05:04,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:05:04,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:05:04,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:05:04,623 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-08-13 16:05:04,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 235 transitions, 2137 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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 16:05:04,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:05:04,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-08-13 16:05:04,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:05:04,905 INFO L129 PetriNetUnfolder]: 1512/3961 cut-off events. [2021-08-13 16:05:04,905 INFO L130 PetriNetUnfolder]: For 1797/3434 co-relation queries the response was YES. [2021-08-13 16:05:04,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 3961 events. 1512/3961 cut-off events. For 1797/3434 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 42334 event pairs, 0 based on Foata normal form. 10/3669 useless extension candidates. Maximal degree in co-relation 13732. Up to 1207 conditions per place. [2021-08-13 16:05:04,924 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 0 selfloop transitions, 0 changer transitions 243/243 dead transitions. [2021-08-13 16:05:04,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 243 transitions, 2417 flow [2021-08-13 16:05:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 16:05:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 16:05:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 557 transitions. [2021-08-13 16:05:04,925 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.838855421686747 [2021-08-13 16:05:04,925 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 557 transitions. [2021-08-13 16:05:04,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 557 transitions. [2021-08-13 16:05:04,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:05:04,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 557 transitions. [2021-08-13 16:05:04,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.625) internal successors, (557), 8 states have internal predecessors, (557), 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 16:05:04,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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 16:05:04,927 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 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 16:05:04,927 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 77 predicate places. [2021-08-13 16:05:04,927 INFO L482 AbstractCegarLoop]: Abstraction has has 154 places, 243 transitions, 2417 flow [2021-08-13 16:05:04,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 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 16:05:04,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown