/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:29:34,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:29:34,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:29:34,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 07:29:34,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:29:34,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:29:34,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:29:34,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:29:34,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:29:34,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:29:34,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:29:34,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:29:34,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:29:34,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:29:34,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:29:34,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:29:34,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:29:34,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:29:34,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:29:34,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:29:34,404 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:29:34,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:29:34,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:29:34,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:29:34,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:29:34,434 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:29:34,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:29:34,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:29:34,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:29:34,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:29:34,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:29:34,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:29:34,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:29:34,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:29:34,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:29:34,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:29:34,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:29:34,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:29:34,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:29:34,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:29:34,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:29:34,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:29:34,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:29:34,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:29:34,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:29:34,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:29:34,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:29:34,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:29:34,719 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:29:34,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-06-13 07:29:34,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c61f034b/be3e451c5b23493db66ad3762cabcc36/FLAG9a1d0b4df [2021-06-13 07:29:35,201 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:29:35,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-06-13 07:29:35,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c61f034b/be3e451c5b23493db66ad3762cabcc36/FLAG9a1d0b4df [2021-06-13 07:29:35,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c61f034b/be3e451c5b23493db66ad3762cabcc36 [2021-06-13 07:29:35,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:29:35,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:29:35,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:29:35,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:29:35,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:29:35,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:35,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1ea6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35, skipping insertion in model container [2021-06-13 07:29:35,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:35,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:29:35,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:29:35,722 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-06-13 07:29:35,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:29:35,858 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:29:35,866 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i[950,963] [2021-06-13 07:29:35,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:29:35,953 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:29:35,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35 WrapperNode [2021-06-13 07:29:35,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:29:35,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:29:35,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:29:35,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:29:35,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:35,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:29:36,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:29:36,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:29:36,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:29:36,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (1/1) ... [2021-06-13 07:29:36,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:29:36,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:29:36,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:29:36,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:29:36,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (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 [2021-06-13 07:29:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:29:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:29:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:29:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:29:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:29:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:29:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:29:36,085 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:29:36,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:29:36,378 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:29:36,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:29:36 BoogieIcfgContainer [2021-06-13 07:29:36,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:29:36,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:29:36,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:29:36,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:29:36,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:29:35" (1/3) ... [2021-06-13 07:29:36,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5bf01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:29:36, skipping insertion in model container [2021-06-13 07:29:36,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:35" (2/3) ... [2021-06-13 07:29:36,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5bf01e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:29:36, skipping insertion in model container [2021-06-13 07:29:36,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:29:36" (3/3) ... [2021-06-13 07:29:36,384 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-06-13 07:29:36,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:29:36,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:29:36,389 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:29:36,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,410 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,412 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,413 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,414 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,415 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,416 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,416 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,416 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,416 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:36,424 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:29:36,438 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:29:36,452 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:29:36,452 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:29:36,452 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:29:36,452 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:29:36,452 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:29:36,452 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:29:36,452 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:29:36,452 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:29:36,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:29:36,484 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-06-13 07:29:36,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:36,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-06-13 07:29:36,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:29:36,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-06-13 07:29:36,502 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-06-13 07:29:36,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:36,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:36,503 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:36,503 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash -710190392, now seen corresponding path program 1 times [2021-06-13 07:29:36,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:36,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294900427] [2021-06-13 07:29:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:36,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,795 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:29:36,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:29:36,815 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:36,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:36,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:36,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:36,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:36,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:36,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294900427] [2021-06-13 07:29:36,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294900427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:36,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:36,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:36,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770921121] [2021-06-13 07:29:36,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:36,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:36,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:36,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:36,942 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:29:36,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-06-13 07:29:36,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:36,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:29:36,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:37,303 INFO L129 PetriNetUnfolder]: 155/462 cut-off events. [2021-06-13 07:29:37,303 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:37,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 462 events. 155/462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2494 event pairs, 26 based on Foata normal form. 18/462 useless extension candidates. Maximal degree in co-relation 729. Up to 100 conditions per place. [2021-06-13 07:29:37,313 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 15 selfloop transitions, 6 changer transitions 35/109 dead transitions. [2021-06-13 07:29:37,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-06-13 07:29:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:29:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:29:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-06-13 07:29:37,323 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-06-13 07:29:37,324 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-06-13 07:29:37,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-06-13 07:29:37,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:37,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-06-13 07:29:37,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:29:37,337 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:29:37,338 INFO L185 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 13 states and 907 transitions. [2021-06-13 07:29:37,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 339 flow [2021-06-13 07:29:37,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:29:37,343 INFO L241 Difference]: Finished difference. Result has 96 places, 68 transitions, 199 flow [2021-06-13 07:29:37,345 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2021-06-13 07:29:37,345 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-06-13 07:29:37,345 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 199 flow [2021-06-13 07:29:37,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-06-13 07:29:37,346 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:37,346 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:37,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:29:37,346 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:37,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:37,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1239960759, now seen corresponding path program 1 times [2021-06-13 07:29:37,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:37,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215579144] [2021-06-13 07:29:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:37,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:37,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:37,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:37,434 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:37,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:37,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:37,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:37,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:37,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:37,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215579144] [2021-06-13 07:29:37,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215579144] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:37,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:37,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:37,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759721881] [2021-06-13 07:29:37,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:37,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:37,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:37,495 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:37,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-06-13 07:29:37,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:37,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:37,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:37,705 INFO L129 PetriNetUnfolder]: 51/261 cut-off events. [2021-06-13 07:29:37,705 INFO L130 PetriNetUnfolder]: For 346/410 co-relation queries the response was YES. [2021-06-13 07:29:37,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 261 events. 51/261 cut-off events. For 346/410 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1296 event pairs, 28 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 601. Up to 61 conditions per place. [2021-06-13 07:29:37,708 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 7 selfloop transitions, 4 changer transitions 12/80 dead transitions. [2021-06-13 07:29:37,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 80 transitions, 302 flow [2021-06-13 07:29:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 704 transitions. [2021-06-13 07:29:37,710 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8585365853658536 [2021-06-13 07:29:37,710 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 704 transitions. [2021-06-13 07:29:37,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 704 transitions. [2021-06-13 07:29:37,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:37,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 704 transitions. [2021-06-13 07:29:37,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.4) internal successors, (704), 10 states have internal predecessors, (704), 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) [2021-06-13 07:29:37,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-06-13 07:29:37,714 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-06-13 07:29:37,714 INFO L185 Difference]: Start difference. First operand has 96 places, 68 transitions, 199 flow. Second operand 10 states and 704 transitions. [2021-06-13 07:29:37,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 80 transitions, 302 flow [2021-06-13 07:29:37,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 265 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-13 07:29:37,721 INFO L241 Difference]: Finished difference. Result has 96 places, 68 transitions, 211 flow [2021-06-13 07:29:37,721 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=211, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2021-06-13 07:29:37,722 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-06-13 07:29:37,722 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 211 flow [2021-06-13 07:29:37,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-06-13 07:29:37,722 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:37,723 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:37,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:29:37,723 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:37,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1133882654, now seen corresponding path program 1 times [2021-06-13 07:29:37,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:37,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534251953] [2021-06-13 07:29:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:37,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:37,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:37,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:37,800 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:29:37,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:29:37,816 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:37,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:37,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:37,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:37,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:37,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:37,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534251953] [2021-06-13 07:29:37,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534251953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:37,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:37,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:29:37,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555616162] [2021-06-13 07:29:37,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:29:37,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:29:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:29:37,874 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:29:37,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 211 flow. Second operand has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 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) [2021-06-13 07:29:37,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:37,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:29:37,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:38,090 INFO L129 PetriNetUnfolder]: 23/219 cut-off events. [2021-06-13 07:29:38,090 INFO L130 PetriNetUnfolder]: For 318/602 co-relation queries the response was YES. [2021-06-13 07:29:38,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 219 events. 23/219 cut-off events. For 318/602 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 941 event pairs, 1 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 471. Up to 27 conditions per place. [2021-06-13 07:29:38,091 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 12 selfloop transitions, 5 changer transitions 30/99 dead transitions. [2021-06-13 07:29:38,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 491 flow [2021-06-13 07:29:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:29:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:29:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 760 transitions. [2021-06-13 07:29:38,094 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8425720620842572 [2021-06-13 07:29:38,094 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 760 transitions. [2021-06-13 07:29:38,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 760 transitions. [2021-06-13 07:29:38,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:38,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 760 transitions. [2021-06-13 07:29:38,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.0909090909091) internal successors, (760), 11 states have internal predecessors, (760), 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) [2021-06-13 07:29:38,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2021-06-13 07:29:38,098 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2021-06-13 07:29:38,098 INFO L185 Difference]: Start difference. First operand has 96 places, 68 transitions, 211 flow. Second operand 11 states and 760 transitions. [2021-06-13 07:29:38,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 491 flow [2021-06-13 07:29:38,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 99 transitions, 445 flow, removed 20 selfloop flow, removed 8 redundant places. [2021-06-13 07:29:38,101 INFO L241 Difference]: Finished difference. Result has 100 places, 65 transitions, 216 flow [2021-06-13 07:29:38,101 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=100, PETRI_TRANSITIONS=65} [2021-06-13 07:29:38,101 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2021-06-13 07:29:38,101 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 65 transitions, 216 flow [2021-06-13 07:29:38,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.375) internal successors, (531), 8 states have internal predecessors, (531), 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) [2021-06-13 07:29:38,102 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:38,102 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:38,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:29:38,102 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2060653011, now seen corresponding path program 1 times [2021-06-13 07:29:38,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:38,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514616294] [2021-06-13 07:29:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:38,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:38,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:38,149 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:38,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:38,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:38,179 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:38,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:38,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:38,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:38,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514616294] [2021-06-13 07:29:38,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514616294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:38,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:38,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:38,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280293850] [2021-06-13 07:29:38,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:38,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:38,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:38,193 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:38,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 65 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 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) [2021-06-13 07:29:38,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:38,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:38,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:38,348 INFO L129 PetriNetUnfolder]: 93/284 cut-off events. [2021-06-13 07:29:38,348 INFO L130 PetriNetUnfolder]: For 97/99 co-relation queries the response was YES. [2021-06-13 07:29:38,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 284 events. 93/284 cut-off events. For 97/99 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1346 event pairs, 2 based on Foata normal form. 8/285 useless extension candidates. Maximal degree in co-relation 523. Up to 86 conditions per place. [2021-06-13 07:29:38,352 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 9 selfloop transitions, 5 changer transitions 21/90 dead transitions. [2021-06-13 07:29:38,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 336 flow [2021-06-13 07:29:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:29:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:29:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2021-06-13 07:29:38,354 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8794037940379403 [2021-06-13 07:29:38,354 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2021-06-13 07:29:38,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2021-06-13 07:29:38,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:38,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2021-06-13 07:29:38,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 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) [2021-06-13 07:29:38,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-06-13 07:29:38,357 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-06-13 07:29:38,357 INFO L185 Difference]: Start difference. First operand has 100 places, 65 transitions, 216 flow. Second operand 9 states and 649 transitions. [2021-06-13 07:29:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 336 flow [2021-06-13 07:29:38,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 282 flow, removed 19 selfloop flow, removed 15 redundant places. [2021-06-13 07:29:38,367 INFO L241 Difference]: Finished difference. Result has 92 places, 67 transitions, 212 flow [2021-06-13 07:29:38,367 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=212, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2021-06-13 07:29:38,367 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 16 predicate places. [2021-06-13 07:29:38,367 INFO L482 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 212 flow [2021-06-13 07:29:38,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 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) [2021-06-13 07:29:38,368 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:38,368 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:38,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:29:38,368 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:38,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1099329267, now seen corresponding path program 1 times [2021-06-13 07:29:38,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:38,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454737675] [2021-06-13 07:29:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:38,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:38,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:38,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:38,453 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:38,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:38,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:38,483 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:38,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:38,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:38,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:38,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454737675] [2021-06-13 07:29:38,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454737675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:38,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:38,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:38,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953567487] [2021-06-13 07:29:38,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:38,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:38,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:38,501 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:38,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-06-13 07:29:38,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:38,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:38,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:38,662 INFO L129 PetriNetUnfolder]: 42/175 cut-off events. [2021-06-13 07:29:38,662 INFO L130 PetriNetUnfolder]: For 232/263 co-relation queries the response was YES. [2021-06-13 07:29:38,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 175 events. 42/175 cut-off events. For 232/263 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 631 event pairs, 0 based on Foata normal form. 9/182 useless extension candidates. Maximal degree in co-relation 478. Up to 64 conditions per place. [2021-06-13 07:29:38,663 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 5 selfloop transitions, 7 changer transitions 25/92 dead transitions. [2021-06-13 07:29:38,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 463 flow [2021-06-13 07:29:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 719 transitions. [2021-06-13 07:29:38,665 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8768292682926829 [2021-06-13 07:29:38,665 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 719 transitions. [2021-06-13 07:29:38,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 719 transitions. [2021-06-13 07:29:38,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:38,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 719 transitions. [2021-06-13 07:29:38,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.9) internal successors, (719), 10 states have internal predecessors, (719), 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) [2021-06-13 07:29:38,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-06-13 07:29:38,669 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-06-13 07:29:38,669 INFO L185 Difference]: Start difference. First operand has 92 places, 67 transitions, 212 flow. Second operand 10 states and 719 transitions. [2021-06-13 07:29:38,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 463 flow [2021-06-13 07:29:38,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 432 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-13 07:29:38,672 INFO L241 Difference]: Finished difference. Result has 97 places, 67 transitions, 230 flow [2021-06-13 07:29:38,672 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2021-06-13 07:29:38,672 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2021-06-13 07:29:38,673 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 230 flow [2021-06-13 07:29:38,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-06-13 07:29:38,673 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:38,673 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:38,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:29:38,673 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:38,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:38,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1539064706, now seen corresponding path program 1 times [2021-06-13 07:29:38,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:38,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884771156] [2021-06-13 07:29:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:38,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:38,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:38,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:38,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:38,748 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:38,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:38,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:38,780 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:38,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:38,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:38,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:38,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:38,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884771156] [2021-06-13 07:29:38,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884771156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:38,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:38,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:29:38,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731016389] [2021-06-13 07:29:38,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:29:38,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:38,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:29:38,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:29:38,795 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:38,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 230 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-06-13 07:29:38,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:38,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:38,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:38,951 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-06-13 07:29:38,951 INFO L130 PetriNetUnfolder]: For 147/165 co-relation queries the response was YES. [2021-06-13 07:29:38,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 76 events. 4/76 cut-off events. For 147/165 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 6/82 useless extension candidates. Maximal degree in co-relation 181. Up to 13 conditions per place. [2021-06-13 07:29:38,952 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2021-06-13 07:29:38,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 70 transitions, 326 flow [2021-06-13 07:29:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:29:38,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:29:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 771 transitions. [2021-06-13 07:29:38,954 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8547671840354767 [2021-06-13 07:29:38,954 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 771 transitions. [2021-06-13 07:29:38,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 771 transitions. [2021-06-13 07:29:38,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:38,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 771 transitions. [2021-06-13 07:29:38,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.0909090909091) internal successors, (771), 11 states have internal predecessors, (771), 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) [2021-06-13 07:29:38,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2021-06-13 07:29:38,957 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2021-06-13 07:29:38,958 INFO L185 Difference]: Start difference. First operand has 97 places, 67 transitions, 230 flow. Second operand 11 states and 771 transitions. [2021-06-13 07:29:38,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 70 transitions, 326 flow [2021-06-13 07:29:38,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 70 transitions, 259 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-06-13 07:29:38,960 INFO L241 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2021-06-13 07:29:38,960 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2021-06-13 07:29:38,960 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2021-06-13 07:29:38,960 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2021-06-13 07:29:38,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-06-13 07:29:38,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:29:38,962 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:29:38,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:29:38 BasicIcfg [2021-06-13 07:29:38,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:29:38,967 INFO L168 Benchmark]: Toolchain (without parser) took 3388.42 ms. Allocated memory was 204.5 MB in the beginning and 277.9 MB in the end (delta: 73.4 MB). Free memory was 167.1 MB in the beginning and 244.9 MB in the end (delta: -77.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:29:38,967 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:29:38,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.53 ms. Allocated memory is still 204.5 MB. Free memory was 166.9 MB in the beginning and 165.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:38,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.27 ms. Allocated memory is still 204.5 MB. Free memory was 164.7 MB in the beginning and 163.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:38,969 INFO L168 Benchmark]: Boogie Preprocessor took 27.36 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 161.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:38,969 INFO L168 Benchmark]: RCFGBuilder took 349.02 ms. Allocated memory is still 204.5 MB. Free memory was 161.6 MB in the beginning and 138.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:38,969 INFO L168 Benchmark]: TraceAbstraction took 2583.77 ms. Allocated memory was 204.5 MB in the beginning and 277.9 MB in the end (delta: 73.4 MB). Free memory was 137.4 MB in the beginning and 244.9 MB in the end (delta: -107.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:29:38,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 371.53 ms. Allocated memory is still 204.5 MB. Free memory was 166.9 MB in the beginning and 165.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.27 ms. Allocated memory is still 204.5 MB. Free memory was 164.7 MB in the beginning and 163.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.36 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 161.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 349.02 ms. Allocated memory is still 204.5 MB. Free memory was 161.6 MB in the beginning and 138.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2583.77 ms. Allocated memory was 204.5 MB in the beginning and 277.9 MB in the end (delta: 73.4 MB). Free memory was 137.4 MB in the beginning and 244.9 MB in the end (delta: -107.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2512.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1382.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 169 SDslu, 209 SDs, 0 SdLazy, 273 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 245.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1017.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=5, InterpolantAutomatonStates: 64, 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: 23.4ms SsaConstructionTime, 157.7ms SatisfiabilityAnalysisTime, 760.1ms InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...