/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:52:38,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:52:38,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:52:38,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:52:38,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:52:38,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:52:38,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:52:38,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:52:38,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:52:38,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:52:38,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:52:38,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:52:38,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:52:38,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:52:38,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:52:38,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:52:38,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:52:38,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:52:38,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:52:38,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:52:38,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:52:38,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:52:38,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:52:38,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:52:38,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:52:38,608 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:52:38,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:52:38,608 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:52:38,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:52:38,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:52:38,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:52:38,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:52:38,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:52:38,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:52:38,610 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:52:38,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:52:38,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:52:38,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:52:38,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:52:38,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:52:38,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:52:38,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:52:38,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:52:38,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:52:38,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:52:38,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:52:38,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:52:38,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:52:38,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:52:38,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:52:38,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:52:38,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:52:38,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:52:38,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:52:38,938 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:52:38,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-03-24 19:52:39,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d58c893a/b38ad2da86b64e548bdce238b9631834/FLAG8acbfd92e [2021-03-24 19:52:39,494 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:52:39,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-03-24 19:52:39,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d58c893a/b38ad2da86b64e548bdce238b9631834/FLAG8acbfd92e [2021-03-24 19:52:39,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d58c893a/b38ad2da86b64e548bdce238b9631834 [2021-03-24 19:52:39,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:52:39,803 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:52:39,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:52:39,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:52:39,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:52:39,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:52:39" (1/1) ... [2021-03-24 19:52:39,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5ab989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:39, skipping insertion in model container [2021-03-24 19:52:39,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:52:39" (1/1) ... [2021-03-24 19:52:39,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:52:39,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:52:39,982 WARN L226 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_pso.oepc.i[950,963] [2021-03-24 19:52:40,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:52:40,141 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:52:40,151 WARN L226 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_pso.oepc.i[950,963] [2021-03-24 19:52:40,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:52:40,268 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:52:40,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40 WrapperNode [2021-03-24 19:52:40,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:52:40,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:52:40,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:52:40,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:52:40,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:52:40,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:52:40,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:52:40,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:52:40,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (1/1) ... [2021-03-24 19:52:40,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:52:40,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:52:40,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:52:40,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:52:40,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (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 [2021-03-24 19:52:40,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:52:40,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:52:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:52:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:52:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:52:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:52:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:52:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:52:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:52:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:52:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:52:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:52:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:52:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:52:40,412 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:52:40,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:52:40,774 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:52:40,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:52:40 BoogieIcfgContainer [2021-03-24 19:52:40,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:52:40,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:52:40,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:52:40,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:52:40,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:52:39" (1/3) ... [2021-03-24 19:52:40,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d41a5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:52:40, skipping insertion in model container [2021-03-24 19:52:40,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:52:40" (2/3) ... [2021-03-24 19:52:40,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d41a5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:52:40, skipping insertion in model container [2021-03-24 19:52:40,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:52:40" (3/3) ... [2021-03-24 19:52:40,782 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2021-03-24 19:52:40,788 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:52:40,792 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:52:40,794 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:52:40,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,834 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,835 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,835 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,839 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,843 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,843 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,849 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:52:40,858 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:52:40,874 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 19:52:40,901 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:52:40,901 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:52:40,901 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:52:40,901 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:52:40,902 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:52:40,902 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:52:40,902 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:52:40,902 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:52:40,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 19:52:40,963 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-24 19:52:40,964 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:40,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:52:40,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 19:52:40,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-24 19:52:40,980 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:52:40,990 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 19:52:40,993 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 19:52:40,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-24 19:52:41,015 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-24 19:52:41,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:41,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 19:52:41,020 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 19:52:42,441 INFO L154 LiptonReduction]: Checked pairs total: 1194 [2021-03-24 19:52:42,441 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-24 19:52:42,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1464 [2021-03-24 19:52:42,451 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 19:52:42,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:42,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:42,452 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:42,452 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 509991216, now seen corresponding path program 1 times [2021-03-24 19:52:42,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:42,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641142722] [2021-03-24 19:52:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:42,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:42,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:42,658 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:42,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:42,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:42,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:42,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641142722] [2021-03-24 19:52:42,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:42,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:42,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035658974] [2021-03-24 19:52:42,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:42,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:42,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:42,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:42,707 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:42,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-24 19:52:42,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:42,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:42,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:42,852 INFO L129 PetriNetUnfolder]: 213/439 cut-off events. [2021-03-24 19:52:42,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:52:42,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 439 events. 213/439 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2310 event pairs, 49 based on Foata normal form. 39/465 useless extension candidates. Maximal degree in co-relation 802. Up to 137 conditions per place. [2021-03-24 19:52:42,859 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 10 selfloop transitions, 7 changer transitions 13/41 dead transitions. [2021-03-24 19:52:42,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 151 flow [2021-03-24 19:52:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:52:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:52:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2021-03-24 19:52:42,877 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.775438596491228 [2021-03-24 19:52:42,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2021-03-24 19:52:42,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2021-03-24 19:52:42,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:42,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2021-03-24 19:52:42,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 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) [2021-03-24 19:52:42,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-24 19:52:42,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-24 19:52:42,903 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 442 transitions. [2021-03-24 19:52:42,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 151 flow [2021-03-24 19:52:42,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:42,907 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 118 flow [2021-03-24 19:52:42,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-24 19:52:42,909 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-24 19:52:42,909 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 118 flow [2021-03-24 19:52:42,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-24 19:52:42,910 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:42,910 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:42,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:52:42,910 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:42,911 INFO L82 PathProgramCache]: Analyzing trace with hash 17191968, now seen corresponding path program 1 times [2021-03-24 19:52:42,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:42,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462671657] [2021-03-24 19:52:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:43,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:43,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,011 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:43,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:43,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:43,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462671657] [2021-03-24 19:52:43,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:43,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:43,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127794032] [2021-03-24 19:52:43,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:43,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:43,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:43,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:43,032 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:43,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-24 19:52:43,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:43,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:43,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:43,137 INFO L129 PetriNetUnfolder]: 135/321 cut-off events. [2021-03-24 19:52:43,137 INFO L130 PetriNetUnfolder]: For 318/419 co-relation queries the response was YES. [2021-03-24 19:52:43,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 321 events. 135/321 cut-off events. For 318/419 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1646 event pairs, 7 based on Foata normal form. 37/351 useless extension candidates. Maximal degree in co-relation 1066. Up to 125 conditions per place. [2021-03-24 19:52:43,142 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 16 selfloop transitions, 9 changer transitions 21/57 dead transitions. [2021-03-24 19:52:43,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 388 flow [2021-03-24 19:52:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:43,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-24 19:52:43,146 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.768170426065163 [2021-03-24 19:52:43,146 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-24 19:52:43,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-24 19:52:43,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:43,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-24 19:52:43,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 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) [2021-03-24 19:52:43,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,151 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 118 flow. Second operand 7 states and 613 transitions. [2021-03-24 19:52:43,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 388 flow [2021-03-24 19:52:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:52:43,156 INFO L241 Difference]: Finished difference. Result has 44 places, 31 transitions, 180 flow [2021-03-24 19:52:43,157 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=180, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2021-03-24 19:52:43,157 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-24 19:52:43,157 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 180 flow [2021-03-24 19:52:43,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-24 19:52:43,158 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:43,158 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:43,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:52:43,158 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash 12769804, now seen corresponding path program 1 times [2021-03-24 19:52:43,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:43,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171661162] [2021-03-24 19:52:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:43,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:43,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,236 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:43,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:43,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171661162] [2021-03-24 19:52:43,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:43,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:43,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744573149] [2021-03-24 19:52:43,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:43,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:43,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:43,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:43,254 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:43,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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) [2021-03-24 19:52:43,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:43,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:43,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:43,336 INFO L129 PetriNetUnfolder]: 82/227 cut-off events. [2021-03-24 19:52:43,336 INFO L130 PetriNetUnfolder]: For 746/907 co-relation queries the response was YES. [2021-03-24 19:52:43,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 227 events. 82/227 cut-off events. For 746/907 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1121 event pairs, 9 based on Foata normal form. 31/253 useless extension candidates. Maximal degree in co-relation 874. Up to 87 conditions per place. [2021-03-24 19:52:43,340 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 16 selfloop transitions, 13 changer transitions 19/59 dead transitions. [2021-03-24 19:52:43,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 476 flow [2021-03-24 19:52:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-24 19:52:43,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7656641604010025 [2021-03-24 19:52:43,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-24 19:52:43,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-24 19:52:43,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:43,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-24 19:52:43,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 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) [2021-03-24 19:52:43,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,351 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 180 flow. Second operand 7 states and 611 transitions. [2021-03-24 19:52:43,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 476 flow [2021-03-24 19:52:43,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 461 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-24 19:52:43,358 INFO L241 Difference]: Finished difference. Result has 51 places, 35 transitions, 279 flow [2021-03-24 19:52:43,358 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2021-03-24 19:52:43,359 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-24 19:52:43,359 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 279 flow [2021-03-24 19:52:43,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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) [2021-03-24 19:52:43,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:43,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:43,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:52:43,360 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:43,361 INFO L82 PathProgramCache]: Analyzing trace with hash 12744818, now seen corresponding path program 1 times [2021-03-24 19:52:43,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:43,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60005724] [2021-03-24 19:52:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:43,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:43,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,439 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:43,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:43,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:43,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60005724] [2021-03-24 19:52:43,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:43,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:43,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845763485] [2021-03-24 19:52:43,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:43,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:43,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:43,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:43,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:43,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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) [2021-03-24 19:52:43,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:43,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:43,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:43,527 INFO L129 PetriNetUnfolder]: 60/175 cut-off events. [2021-03-24 19:52:43,527 INFO L130 PetriNetUnfolder]: For 790/955 co-relation queries the response was YES. [2021-03-24 19:52:43,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 175 events. 60/175 cut-off events. For 790/955 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 769 event pairs, 3 based on Foata normal form. 22/197 useless extension candidates. Maximal degree in co-relation 835. Up to 62 conditions per place. [2021-03-24 19:52:43,529 INFO L132 encePairwiseOnDemand]: 104/114 looper letters, 16 selfloop transitions, 23 changer transitions 11/61 dead transitions. [2021-03-24 19:52:43,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 637 flow [2021-03-24 19:52:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2021-03-24 19:52:43,531 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7644110275689223 [2021-03-24 19:52:43,531 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2021-03-24 19:52:43,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2021-03-24 19:52:43,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:43,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2021-03-24 19:52:43,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 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) [2021-03-24 19:52:43,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,536 INFO L185 Difference]: Start difference. First operand has 51 places, 35 transitions, 279 flow. Second operand 7 states and 610 transitions. [2021-03-24 19:52:43,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 637 flow [2021-03-24 19:52:43,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 603 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-24 19:52:43,541 INFO L241 Difference]: Finished difference. Result has 56 places, 46 transitions, 486 flow [2021-03-24 19:52:43,541 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=486, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2021-03-24 19:52:43,542 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-24 19:52:43,542 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 486 flow [2021-03-24 19:52:43,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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) [2021-03-24 19:52:43,542 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:43,542 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:43,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:52:43,543 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:43,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1821983126, now seen corresponding path program 1 times [2021-03-24 19:52:43,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:43,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672598608] [2021-03-24 19:52:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:43,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:43,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,586 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:43,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:43,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:43,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672598608] [2021-03-24 19:52:43,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:43,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:43,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147141219] [2021-03-24 19:52:43,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:43,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:43,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:43,601 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:43,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 486 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 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) [2021-03-24 19:52:43,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:43,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:43,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:43,654 INFO L129 PetriNetUnfolder]: 51/152 cut-off events. [2021-03-24 19:52:43,654 INFO L130 PetriNetUnfolder]: For 1085/1304 co-relation queries the response was YES. [2021-03-24 19:52:43,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 152 events. 51/152 cut-off events. For 1085/1304 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 613 event pairs, 0 based on Foata normal form. 11/162 useless extension candidates. Maximal degree in co-relation 844. Up to 58 conditions per place. [2021-03-24 19:52:43,656 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 23 selfloop transitions, 24 changer transitions 8/66 dead transitions. [2021-03-24 19:52:43,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 843 flow [2021-03-24 19:52:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2021-03-24 19:52:43,658 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7568922305764411 [2021-03-24 19:52:43,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2021-03-24 19:52:43,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2021-03-24 19:52:43,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:43,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2021-03-24 19:52:43,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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) [2021-03-24 19:52:43,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,661 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,662 INFO L185 Difference]: Start difference. First operand has 56 places, 46 transitions, 486 flow. Second operand 7 states and 604 transitions. [2021-03-24 19:52:43,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 843 flow [2021-03-24 19:52:43,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 811 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-24 19:52:43,668 INFO L241 Difference]: Finished difference. Result has 60 places, 53 transitions, 684 flow [2021-03-24 19:52:43,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=684, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2021-03-24 19:52:43,668 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2021-03-24 19:52:43,668 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 684 flow [2021-03-24 19:52:43,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 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) [2021-03-24 19:52:43,669 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:43,669 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:43,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:52:43,669 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:43,670 INFO L82 PathProgramCache]: Analyzing trace with hash 646882454, now seen corresponding path program 1 times [2021-03-24 19:52:43,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:43,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721706462] [2021-03-24 19:52:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:43,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,736 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:52:43,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:52:43,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:43,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721706462] [2021-03-24 19:52:43,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:43,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:52:43,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877668074] [2021-03-24 19:52:43,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:52:43,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:52:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:52:43,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-24 19:52:43,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 684 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-24 19:52:43,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:43,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-24 19:52:43,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:43,815 INFO L129 PetriNetUnfolder]: 133/328 cut-off events. [2021-03-24 19:52:43,815 INFO L130 PetriNetUnfolder]: For 1766/1952 co-relation queries the response was YES. [2021-03-24 19:52:43,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 328 events. 133/328 cut-off events. For 1766/1952 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1832 event pairs, 31 based on Foata normal form. 42/358 useless extension candidates. Maximal degree in co-relation 1276. Up to 159 conditions per place. [2021-03-24 19:52:43,819 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2021-03-24 19:52:43,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 736 flow [2021-03-24 19:52:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:52:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:52:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-24 19:52:43,821 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7771929824561403 [2021-03-24 19:52:43,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-24 19:52:43,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-24 19:52:43,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:43,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-24 19:52:43,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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) [2021-03-24 19:52:43,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-24 19:52:43,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-24 19:52:43,825 INFO L185 Difference]: Start difference. First operand has 60 places, 53 transitions, 684 flow. Second operand 5 states and 443 transitions. [2021-03-24 19:52:43,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 736 flow [2021-03-24 19:52:43,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 723 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:43,833 INFO L241 Difference]: Finished difference. Result has 61 places, 60 transitions, 731 flow [2021-03-24 19:52:43,833 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=731, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2021-03-24 19:52:43,833 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2021-03-24 19:52:43,834 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 731 flow [2021-03-24 19:52:43,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-24 19:52:43,834 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:43,834 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:43,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:52:43,834 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash -634310375, now seen corresponding path program 1 times [2021-03-24 19:52:43,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:43,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434795834] [2021-03-24 19:52:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:43,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:43,892 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:52:43,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:52:43,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:43,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:43,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434795834] [2021-03-24 19:52:43,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:43,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:43,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122928249] [2021-03-24 19:52:43,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:43,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:43,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:43,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:43,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-24 19:52:43,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 731 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2021-03-24 19:52:43,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:43,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-24 19:52:43,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:43,982 INFO L129 PetriNetUnfolder]: 100/282 cut-off events. [2021-03-24 19:52:43,982 INFO L130 PetriNetUnfolder]: For 1710/2115 co-relation queries the response was YES. [2021-03-24 19:52:43,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 282 events. 100/282 cut-off events. For 1710/2115 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1653 event pairs, 3 based on Foata normal form. 141/414 useless extension candidates. Maximal degree in co-relation 1351. Up to 162 conditions per place. [2021-03-24 19:52:43,985 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 15 changer transitions 3/70 dead transitions. [2021-03-24 19:52:43,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 835 flow [2021-03-24 19:52:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2021-03-24 19:52:43,987 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7769423558897243 [2021-03-24 19:52:43,987 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2021-03-24 19:52:43,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2021-03-24 19:52:43,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:43,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2021-03-24 19:52:43,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 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) [2021-03-24 19:52:43,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:43,991 INFO L185 Difference]: Start difference. First operand has 61 places, 60 transitions, 731 flow. Second operand 7 states and 620 transitions. [2021-03-24 19:52:43,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 835 flow [2021-03-24 19:52:43,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 827 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 19:52:43,999 INFO L241 Difference]: Finished difference. Result has 68 places, 67 transitions, 822 flow [2021-03-24 19:52:43,999 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=822, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2021-03-24 19:52:43,999 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2021-03-24 19:52:43,999 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 822 flow [2021-03-24 19:52:44,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2021-03-24 19:52:44,000 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:44,000 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:44,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:52:44,000 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash 60196320, now seen corresponding path program 1 times [2021-03-24 19:52:44,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:44,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108381940] [2021-03-24 19:52:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:44,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:44,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,059 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:44,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:44,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:44,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108381940] [2021-03-24 19:52:44,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:44,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:52:44,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805491261] [2021-03-24 19:52:44,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:52:44,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:44,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:52:44,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:52:44,077 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:44,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 822 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2021-03-24 19:52:44,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:44,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:44,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:44,160 INFO L129 PetriNetUnfolder]: 121/359 cut-off events. [2021-03-24 19:52:44,160 INFO L130 PetriNetUnfolder]: For 2427/2876 co-relation queries the response was YES. [2021-03-24 19:52:44,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 359 events. 121/359 cut-off events. For 2427/2876 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2319 event pairs, 6 based on Foata normal form. 30/369 useless extension candidates. Maximal degree in co-relation 1938. Up to 221 conditions per place. [2021-03-24 19:52:44,164 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 14 selfloop transitions, 34 changer transitions 4/77 dead transitions. [2021-03-24 19:52:44,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 1059 flow [2021-03-24 19:52:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2021-03-24 19:52:44,167 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7556390977443609 [2021-03-24 19:52:44,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2021-03-24 19:52:44,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2021-03-24 19:52:44,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:44,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2021-03-24 19:52:44,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 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) [2021-03-24 19:52:44,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:44,170 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:44,170 INFO L185 Difference]: Start difference. First operand has 68 places, 67 transitions, 822 flow. Second operand 7 states and 603 transitions. [2021-03-24 19:52:44,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 1059 flow [2021-03-24 19:52:44,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 1012 flow, removed 19 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:44,182 INFO L241 Difference]: Finished difference. Result has 77 places, 69 transitions, 968 flow [2021-03-24 19:52:44,182 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=968, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2021-03-24 19:52:44,182 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2021-03-24 19:52:44,182 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 968 flow [2021-03-24 19:52:44,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 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) [2021-03-24 19:52:44,183 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:44,183 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:44,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:52:44,183 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:44,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:44,183 INFO L82 PathProgramCache]: Analyzing trace with hash -87558269, now seen corresponding path program 1 times [2021-03-24 19:52:44,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:44,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891149983] [2021-03-24 19:52:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:44,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,239 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 19:52:44,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:52:44,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:44,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891149983] [2021-03-24 19:52:44,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:44,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:52:44,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568545279] [2021-03-24 19:52:44,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:52:44,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:44,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:52:44,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:52:44,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-24 19:52:44,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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) [2021-03-24 19:52:44,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:44,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-24 19:52:44,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:44,375 INFO L129 PetriNetUnfolder]: 109/319 cut-off events. [2021-03-24 19:52:44,375 INFO L130 PetriNetUnfolder]: For 2141/2778 co-relation queries the response was YES. [2021-03-24 19:52:44,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 319 events. 109/319 cut-off events. For 2141/2778 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2079 event pairs, 0 based on Foata normal form. 207/503 useless extension candidates. Maximal degree in co-relation 1668. Up to 95 conditions per place. [2021-03-24 19:52:44,378 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 2 selfloop transitions, 17 changer transitions 31/73 dead transitions. [2021-03-24 19:52:44,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 1046 flow [2021-03-24 19:52:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:52:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:52:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 791 transitions. [2021-03-24 19:52:44,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7709551656920078 [2021-03-24 19:52:44,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 791 transitions. [2021-03-24 19:52:44,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 791 transitions. [2021-03-24 19:52:44,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:44,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 791 transitions. [2021-03-24 19:52:44,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.88888888888889) internal successors, (791), 9 states have internal predecessors, (791), 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) [2021-03-24 19:52:44,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2021-03-24 19:52:44,385 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 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) [2021-03-24 19:52:44,385 INFO L185 Difference]: Start difference. First operand has 77 places, 69 transitions, 968 flow. Second operand 9 states and 791 transitions. [2021-03-24 19:52:44,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 1046 flow [2021-03-24 19:52:44,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 1032 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-24 19:52:44,393 INFO L241 Difference]: Finished difference. Result has 82 places, 42 transitions, 499 flow [2021-03-24 19:52:44,393 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=499, PETRI_PLACES=82, PETRI_TRANSITIONS=42} [2021-03-24 19:52:44,394 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2021-03-24 19:52:44,394 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 42 transitions, 499 flow [2021-03-24 19:52:44,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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) [2021-03-24 19:52:44,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:44,394 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:44,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:52:44,396 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1289004552, now seen corresponding path program 1 times [2021-03-24 19:52:44,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:44,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842138968] [2021-03-24 19:52:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:44,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:44,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,440 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:44,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:44,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:44,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842138968] [2021-03-24 19:52:44,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:44,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:52:44,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286023499] [2021-03-24 19:52:44,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:52:44,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:44,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:52:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:52:44,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:44,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 42 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-03-24 19:52:44,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:44,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:44,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:44,510 INFO L129 PetriNetUnfolder]: 18/88 cut-off events. [2021-03-24 19:52:44,510 INFO L130 PetriNetUnfolder]: For 707/733 co-relation queries the response was YES. [2021-03-24 19:52:44,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 88 events. 18/88 cut-off events. For 707/733 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 324 event pairs, 0 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 500. Up to 30 conditions per place. [2021-03-24 19:52:44,511 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 3 selfloop transitions, 7 changer transitions 17/44 dead transitions. [2021-03-24 19:52:44,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 44 transitions, 588 flow [2021-03-24 19:52:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:52:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:52:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2021-03-24 19:52:44,513 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7418546365914787 [2021-03-24 19:52:44,513 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2021-03-24 19:52:44,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2021-03-24 19:52:44,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:44,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2021-03-24 19:52:44,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 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) [2021-03-24 19:52:44,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:44,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 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) [2021-03-24 19:52:44,516 INFO L185 Difference]: Start difference. First operand has 82 places, 42 transitions, 499 flow. Second operand 7 states and 592 transitions. [2021-03-24 19:52:44,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 44 transitions, 588 flow [2021-03-24 19:52:44,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 44 transitions, 415 flow, removed 22 selfloop flow, removed 19 redundant places. [2021-03-24 19:52:44,521 INFO L241 Difference]: Finished difference. Result has 70 places, 27 transitions, 216 flow [2021-03-24 19:52:44,521 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=27} [2021-03-24 19:52:44,522 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2021-03-24 19:52:44,522 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 27 transitions, 216 flow [2021-03-24 19:52:44,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-03-24 19:52:44,522 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:52:44,522 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:52:44,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:52:44,522 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:52:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:52:44,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1055629938, now seen corresponding path program 2 times [2021-03-24 19:52:44,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:52:44,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947863530] [2021-03-24 19:52:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:52:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:52:44,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:52:44,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,571 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:52:44,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:52:44,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:52:44,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:52:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:52:44,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947863530] [2021-03-24 19:52:44,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:52:44,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:52:44,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758787494] [2021-03-24 19:52:44,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:52:44,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:52:44,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:52:44,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:52:44,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-24 19:52:44,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 27 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-03-24 19:52:44,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:52:44,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-24 19:52:44,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:52:44,612 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-24 19:52:44,612 INFO L130 PetriNetUnfolder]: For 145/146 co-relation queries the response was YES. [2021-03-24 19:52:44,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 31 events. 5/31 cut-off events. For 145/146 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 139. Up to 8 conditions per place. [2021-03-24 19:52:44,613 INFO L132 encePairwiseOnDemand]: 109/114 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:52:44,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 26 transitions, 230 flow [2021-03-24 19:52:44,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:52:44,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:52:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2021-03-24 19:52:44,615 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2021-03-24 19:52:44,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 420 transitions. [2021-03-24 19:52:44,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 420 transitions. [2021-03-24 19:52:44,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:52:44,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 420 transitions. [2021-03-24 19:52:44,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2021-03-24 19:52:44,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-24 19:52:44,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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) [2021-03-24 19:52:44,617 INFO L185 Difference]: Start difference. First operand has 70 places, 27 transitions, 216 flow. Second operand 5 states and 420 transitions. [2021-03-24 19:52:44,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 26 transitions, 230 flow [2021-03-24 19:52:44,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 26 transitions, 136 flow, removed 11 selfloop flow, removed 22 redundant places. [2021-03-24 19:52:44,620 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-03-24 19:52:44,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-03-24 19:52:44,620 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 19:52:44,620 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-03-24 19:52:44,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2021-03-24 19:52:44,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:52:44,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:52:44 BasicIcfg [2021-03-24 19:52:44,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:52:44,625 INFO L168 Benchmark]: Toolchain (without parser) took 4821.31 ms. Allocated memory was 255.9 MB in the beginning and 421.5 MB in the end (delta: 165.7 MB). Free memory was 233.9 MB in the beginning and 335.6 MB in the end (delta: -101.7 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:44,625 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 165.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:52:44,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.78 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 233.2 MB in the beginning and 312.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:44,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.22 ms. Allocated memory is still 350.2 MB. Free memory was 312.7 MB in the beginning and 310.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:44,628 INFO L168 Benchmark]: Boogie Preprocessor took 26.82 ms. Allocated memory is still 350.2 MB. Free memory was 310.8 MB in the beginning and 309.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:44,628 INFO L168 Benchmark]: RCFGBuilder took 425.90 ms. Allocated memory is still 350.2 MB. Free memory was 309.2 MB in the beginning and 327.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:44,628 INFO L168 Benchmark]: TraceAbstraction took 3846.92 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 326.5 MB in the beginning and 335.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:52:44,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 165.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 464.78 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 233.2 MB in the beginning and 312.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.22 ms. Allocated memory is still 350.2 MB. Free memory was 312.7 MB in the beginning and 310.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.82 ms. Allocated memory is still 350.2 MB. Free memory was 310.8 MB in the beginning and 309.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 425.90 ms. Allocated memory is still 350.2 MB. Free memory was 309.2 MB in the beginning and 327.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3846.92 ms. Allocated memory was 350.2 MB in the beginning and 421.5 MB in the end (delta: 71.3 MB). Free memory was 326.5 MB in the beginning and 335.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1448.5ms, 68 PlacesBefore, 31 PlacesAfterwards, 59 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 743, positive: 704, positive conditional: 0, positive unconditional: 704, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 601, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 601, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 601, positive: 567, positive conditional: 0, positive unconditional: 567, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 137, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 743, positive: 132, positive conditional: 0, positive unconditional: 132, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 601, unknown conditional: 0, unknown unconditional: 601] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3723.8ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1123.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1545.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 121 SDtfs, 99 SDslu, 150 SDs, 0 SdLazy, 245 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 198.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 298.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=968occurred in iteration=8, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.6ms SsaConstructionTime, 213.2ms SatisfiabilityAnalysisTime, 619.8ms InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 915 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...