/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:26:02,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:26:02,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:26:02,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:26:02,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:26:02,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:26:02,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:26:02,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:26:02,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:26:02,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:26:02,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:26:02,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:26:02,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:26:02,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:26:02,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:26:02,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:26:02,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:26:02,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:26:02,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:26:02,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:26:02,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:26:02,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:26:02,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:26:02,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:26:02,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:26:02,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:26:02,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:26:02,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:26:02,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:26:02,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:26:02,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:26:02,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:26:02,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:26:02,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:26:02,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:26:02,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:26:02,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:26:02,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:26:02,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:26:02,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:26:02,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:26:02,793 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 [2021-06-10 12:26:02,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:26:02,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:26:02,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:26:02,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:26:02,830 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:26:02,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:26:02,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:26:02,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:26:02,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:26:02,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:26:02,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:26:02,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:26:02,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:26:02,832 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:26:02,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:26:02,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:26:02,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:26:02,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:26:02,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:26:02,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:26:02,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:26:02,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:26:02,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:26:02,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:26:03,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:26:03,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:26:03,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:26:03,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:26:03,176 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:26:03,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2021-06-10 12:26:03,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad79e4678/74de5d5d3a88474fae437f9ea08f8b04/FLAGc13e1e1e6 [2021-06-10 12:26:03,709 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:26:03,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2021-06-10 12:26:03,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad79e4678/74de5d5d3a88474fae437f9ea08f8b04/FLAGc13e1e1e6 [2021-06-10 12:26:04,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad79e4678/74de5d5d3a88474fae437f9ea08f8b04 [2021-06-10 12:26:04,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:26:04,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:26:04,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:26:04,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:26:04,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:26:04,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43484dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04, skipping insertion in model container [2021-06-10 12:26:04,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:26:04,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:26:04,236 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i[950,963] [2021-06-10 12:26:04,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:26:04,391 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:26:04,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i[950,963] [2021-06-10 12:26:04,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:26:04,510 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:26:04,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04 WrapperNode [2021-06-10 12:26:04,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:26:04,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:26:04,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:26:04,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:26:04,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:26:04,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:26:04,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:26:04,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:26:04,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (1/1) ... [2021-06-10 12:26:04,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:26:04,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:26:04,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:26:04,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:26:04,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (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 [2021-06-10 12:26:04,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:26:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:26:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:26:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:26:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:26:04,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:26:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:26:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:26:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:26:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:26:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:26:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:26:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:26:04,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:26:04,665 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:26:05,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:26:05,047 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:26:05,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:26:05 BoogieIcfgContainer [2021-06-10 12:26:05,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:26:05,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:26:05,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:26:05,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:26:05,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:26:04" (1/3) ... [2021-06-10 12:26:05,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d1a2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:26:05, skipping insertion in model container [2021-06-10 12:26:05,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:26:04" (2/3) ... [2021-06-10 12:26:05,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d1a2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:26:05, skipping insertion in model container [2021-06-10 12:26:05,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:26:05" (3/3) ... [2021-06-10 12:26:05,055 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2021-06-10 12:26:05,062 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:26:05,066 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:26:05,067 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:26:05,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,100 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,100 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,101 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,101 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,101 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,101 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,108 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,108 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,120 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,121 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,128 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,128 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:26:05,131 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:26:05,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:26:05,180 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:26:05,181 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:26:05,181 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:26:05,181 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:26:05,181 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:26:05,181 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:26:05,181 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:26:05,181 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:26:05,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:26:05,244 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 12:26:05,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:26:05,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 12:26:05,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:26:05,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 12:26:05,265 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-10 12:26:05,265 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:26:05,265 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:05,266 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:05,266 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:05,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-06-10 12:26:05,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:05,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166613107] [2021-06-10 12:26:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:05,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:05,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:05,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:05,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:05,564 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:05,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:05,591 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:05,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:05,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:05,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:05,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:05,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:05,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:05,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:05,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166613107] [2021-06-10 12:26:05,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:05,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:05,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643515062] [2021-06-10 12:26:05,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:05,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:05,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:05,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:05,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:26:05,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-06-10 12:26:05,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:05,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:26:05,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:06,249 INFO L129 PetriNetUnfolder]: 304/746 cut-off events. [2021-06-10 12:26:06,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:26:06,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 746 events. 304/746 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4595 event pairs, 60 based on Foata normal form. 32/755 useless extension candidates. Maximal degree in co-relation 1243. Up to 147 conditions per place. [2021-06-10 12:26:06,256 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 20 selfloop transitions, 6 changer transitions 47/117 dead transitions. [2021-06-10 12:26:06,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 389 flow [2021-06-10 12:26:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 807 transitions. [2021-06-10 12:26:06,276 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8276923076923077 [2021-06-10 12:26:06,277 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 807 transitions. [2021-06-10 12:26:06,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 807 transitions. [2021-06-10 12:26:06,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:06,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 807 transitions. [2021-06-10 12:26:06,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.07692307692308) internal successors, (807), 13 states have internal predecessors, (807), 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) [2021-06-10 12:26:06,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:06,299 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:06,301 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 807 transitions. [2021-06-10 12:26:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 389 flow [2021-06-10 12:26:06,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:26:06,313 INFO L241 Difference]: Finished difference. Result has 90 places, 63 transitions, 210 flow [2021-06-10 12:26:06,315 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2021-06-10 12:26:06,316 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2021-06-10 12:26:06,316 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 210 flow [2021-06-10 12:26:06,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-06-10 12:26:06,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:06,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:06,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:26:06,318 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:06,319 INFO L82 PathProgramCache]: Analyzing trace with hash -880296958, now seen corresponding path program 1 times [2021-06-10 12:26:06,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:06,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94221593] [2021-06-10 12:26:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:06,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:06,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:06,464 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:06,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:06,481 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:06,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:06,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:06,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:06,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:06,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94221593] [2021-06-10 12:26:06,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:06,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:06,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540794367] [2021-06-10 12:26:06,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:06,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:06,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:06,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:06,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:26:06,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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) [2021-06-10 12:26:06,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:06,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:26:06,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:06,828 INFO L129 PetriNetUnfolder]: 168/506 cut-off events. [2021-06-10 12:26:06,828 INFO L130 PetriNetUnfolder]: For 1185/1503 co-relation queries the response was YES. [2021-06-10 12:26:06,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 506 events. 168/506 cut-off events. For 1185/1503 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2794 event pairs, 2 based on Foata normal form. 19/511 useless extension candidates. Maximal degree in co-relation 1608. Up to 112 conditions per place. [2021-06-10 12:26:06,833 INFO L132 encePairwiseOnDemand]: 63/75 looper letters, 22 selfloop transitions, 11 changer transitions 52/129 dead transitions. [2021-06-10 12:26:06,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 882 flow [2021-06-10 12:26:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 798 transitions. [2021-06-10 12:26:06,835 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8184615384615385 [2021-06-10 12:26:06,836 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 798 transitions. [2021-06-10 12:26:06,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 798 transitions. [2021-06-10 12:26:06,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:06,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 798 transitions. [2021-06-10 12:26:06,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.38461538461539) internal successors, (798), 13 states have internal predecessors, (798), 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) [2021-06-10 12:26:06,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:06,840 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:06,840 INFO L185 Difference]: Start difference. First operand has 90 places, 63 transitions, 210 flow. Second operand 13 states and 798 transitions. [2021-06-10 12:26:06,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 882 flow [2021-06-10 12:26:06,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 854 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 12:26:06,847 INFO L241 Difference]: Finished difference. Result has 101 places, 69 transitions, 339 flow [2021-06-10 12:26:06,848 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=339, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2021-06-10 12:26:06,848 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2021-06-10 12:26:06,848 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 339 flow [2021-06-10 12:26:06,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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) [2021-06-10 12:26:06,849 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:06,849 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:06,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:26:06,849 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:06,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1341594819, now seen corresponding path program 1 times [2021-06-10 12:26:06,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:06,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123817449] [2021-06-10 12:26:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:06,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:06,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:06,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:06,907 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:06,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:06,918 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:06,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:06,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:06,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:06,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:06,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:06,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123817449] [2021-06-10 12:26:06,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:06,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:06,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978048291] [2021-06-10 12:26:06,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:06,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:06,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:06,970 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 75 [2021-06-10 12:26:06,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 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) [2021-06-10 12:26:06,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:06,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 75 [2021-06-10 12:26:06,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:07,202 INFO L129 PetriNetUnfolder]: 199/551 cut-off events. [2021-06-10 12:26:07,202 INFO L130 PetriNetUnfolder]: For 2803/3247 co-relation queries the response was YES. [2021-06-10 12:26:07,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 551 events. 199/551 cut-off events. For 2803/3247 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2838 event pairs, 8 based on Foata normal form. 21/560 useless extension candidates. Maximal degree in co-relation 2153. Up to 116 conditions per place. [2021-06-10 12:26:07,214 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 24 selfloop transitions, 8 changer transitions 62/136 dead transitions. [2021-06-10 12:26:07,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1195 flow [2021-06-10 12:26:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:26:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:26:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 656 transitions. [2021-06-10 12:26:07,217 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7951515151515152 [2021-06-10 12:26:07,217 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 656 transitions. [2021-06-10 12:26:07,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 656 transitions. [2021-06-10 12:26:07,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:07,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 656 transitions. [2021-06-10 12:26:07,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.63636363636363) internal successors, (656), 11 states have internal predecessors, (656), 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) [2021-06-10 12:26:07,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 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) [2021-06-10 12:26:07,221 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 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) [2021-06-10 12:26:07,221 INFO L185 Difference]: Start difference. First operand has 101 places, 69 transitions, 339 flow. Second operand 11 states and 656 transitions. [2021-06-10 12:26:07,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1195 flow [2021-06-10 12:26:07,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 1132 flow, removed 30 selfloop flow, removed 4 redundant places. [2021-06-10 12:26:07,233 INFO L241 Difference]: Finished difference. Result has 106 places, 65 transitions, 306 flow [2021-06-10 12:26:07,233 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=306, PETRI_PLACES=106, PETRI_TRANSITIONS=65} [2021-06-10 12:26:07,233 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 37 predicate places. [2021-06-10 12:26:07,233 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 65 transitions, 306 flow [2021-06-10 12:26:07,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 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) [2021-06-10 12:26:07,234 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:07,234 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:07,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:26:07,235 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:07,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1532306767, now seen corresponding path program 1 times [2021-06-10 12:26:07,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:07,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345312874] [2021-06-10 12:26:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:07,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:07,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:07,333 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:07,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:07,350 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:07,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:07,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:07,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:07,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:07,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345312874] [2021-06-10 12:26:07,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:07,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:07,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114821754] [2021-06-10 12:26:07,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:07,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:07,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:26:07,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 65 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2021-06-10 12:26:07,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:07,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:26:07,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:07,625 INFO L129 PetriNetUnfolder]: 47/236 cut-off events. [2021-06-10 12:26:07,625 INFO L130 PetriNetUnfolder]: For 987/1054 co-relation queries the response was YES. [2021-06-10 12:26:07,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 236 events. 47/236 cut-off events. For 987/1054 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1060 event pairs, 0 based on Foata normal form. 9/244 useless extension candidates. Maximal degree in co-relation 858. Up to 39 conditions per place. [2021-06-10 12:26:07,628 INFO L132 encePairwiseOnDemand]: 62/75 looper letters, 17 selfloop transitions, 13 changer transitions 28/102 dead transitions. [2021-06-10 12:26:07,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 802 flow [2021-06-10 12:26:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 782 transitions. [2021-06-10 12:26:07,631 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8020512820512821 [2021-06-10 12:26:07,631 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 782 transitions. [2021-06-10 12:26:07,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 782 transitions. [2021-06-10 12:26:07,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:07,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 782 transitions. [2021-06-10 12:26:07,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.15384615384615) internal successors, (782), 13 states have internal predecessors, (782), 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) [2021-06-10 12:26:07,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:07,636 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:07,636 INFO L185 Difference]: Start difference. First operand has 106 places, 65 transitions, 306 flow. Second operand 13 states and 782 transitions. [2021-06-10 12:26:07,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 802 flow [2021-06-10 12:26:07,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 682 flow, removed 35 selfloop flow, removed 12 redundant places. [2021-06-10 12:26:07,643 INFO L241 Difference]: Finished difference. Result has 112 places, 68 transitions, 382 flow [2021-06-10 12:26:07,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=382, PETRI_PLACES=112, PETRI_TRANSITIONS=68} [2021-06-10 12:26:07,643 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2021-06-10 12:26:07,643 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 68 transitions, 382 flow [2021-06-10 12:26:07,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2021-06-10 12:26:07,646 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:07,647 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:07,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:26:07,647 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:07,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1957084048, now seen corresponding path program 1 times [2021-06-10 12:26:07,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:07,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056603222] [2021-06-10 12:26:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:07,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:07,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:07,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:07,728 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:07,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:07,740 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:07,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:07,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:07,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:07,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:07,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:07,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056603222] [2021-06-10 12:26:07,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:07,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:07,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142814997] [2021-06-10 12:26:07,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:07,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:07,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:07,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:07,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:26:07,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 68 transitions, 382 flow. Second operand has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 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) [2021-06-10 12:26:07,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:07,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:26:07,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:08,149 INFO L129 PetriNetUnfolder]: 36/250 cut-off events. [2021-06-10 12:26:08,149 INFO L130 PetriNetUnfolder]: For 1414/1497 co-relation queries the response was YES. [2021-06-10 12:26:08,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 250 events. 36/250 cut-off events. For 1414/1497 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1244 event pairs, 0 based on Foata normal form. 18/267 useless extension candidates. Maximal degree in co-relation 924. Up to 34 conditions per place. [2021-06-10 12:26:08,152 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 16 selfloop transitions, 13 changer transitions 49/122 dead transitions. [2021-06-10 12:26:08,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 122 transitions, 1166 flow [2021-06-10 12:26:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-10 12:26:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-06-10 12:26:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1246 transitions. [2021-06-10 12:26:08,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-06-10 12:26:08,157 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1246 transitions. [2021-06-10 12:26:08,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1246 transitions. [2021-06-10 12:26:08,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:08,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1246 transitions. [2021-06-10 12:26:08,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.333333333333336) internal successors, (1246), 21 states have internal predecessors, (1246), 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) [2021-06-10 12:26:08,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 75.0) internal successors, (1650), 22 states have internal predecessors, (1650), 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) [2021-06-10 12:26:08,166 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 75.0) internal successors, (1650), 22 states have internal predecessors, (1650), 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) [2021-06-10 12:26:08,166 INFO L185 Difference]: Start difference. First operand has 112 places, 68 transitions, 382 flow. Second operand 21 states and 1246 transitions. [2021-06-10 12:26:08,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 122 transitions, 1166 flow [2021-06-10 12:26:08,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 122 transitions, 1026 flow, removed 68 selfloop flow, removed 7 redundant places. [2021-06-10 12:26:08,175 INFO L241 Difference]: Finished difference. Result has 136 places, 69 transitions, 456 flow [2021-06-10 12:26:08,175 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=456, PETRI_PLACES=136, PETRI_TRANSITIONS=69} [2021-06-10 12:26:08,175 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 67 predicate places. [2021-06-10 12:26:08,175 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 69 transitions, 456 flow [2021-06-10 12:26:08,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 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) [2021-06-10 12:26:08,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:08,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:08,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:26:08,176 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:08,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1688140546, now seen corresponding path program 1 times [2021-06-10 12:26:08,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:08,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470509025] [2021-06-10 12:26:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:08,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:08,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:08,239 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:08,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:08,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:08,264 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:08,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:08,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:08,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470509025] [2021-06-10 12:26:08,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:08,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:26:08,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8230664] [2021-06-10 12:26:08,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:26:08,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:08,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:26:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:26:08,279 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:26:08,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 69 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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) [2021-06-10 12:26:08,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:08,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:26:08,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:08,462 INFO L129 PetriNetUnfolder]: 231/611 cut-off events. [2021-06-10 12:26:08,462 INFO L130 PetriNetUnfolder]: For 1029/1062 co-relation queries the response was YES. [2021-06-10 12:26:08,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 611 events. 231/611 cut-off events. For 1029/1062 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3932 event pairs, 4 based on Foata normal form. 9/581 useless extension candidates. Maximal degree in co-relation 1436. Up to 166 conditions per place. [2021-06-10 12:26:08,469 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 15 selfloop transitions, 13 changer transitions 13/99 dead transitions. [2021-06-10 12:26:08,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 598 flow [2021-06-10 12:26:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:26:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:26:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-06-10 12:26:08,471 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-06-10 12:26:08,471 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-06-10 12:26:08,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-06-10 12:26:08,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:08,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-06-10 12:26:08,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2021-06-10 12:26:08,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-06-10 12:26:08,475 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-06-10 12:26:08,475 INFO L185 Difference]: Start difference. First operand has 136 places, 69 transitions, 456 flow. Second operand 10 states and 653 transitions. [2021-06-10 12:26:08,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 598 flow [2021-06-10 12:26:08,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 99 transitions, 517 flow, removed 37 selfloop flow, removed 21 redundant places. [2021-06-10 12:26:08,481 INFO L241 Difference]: Finished difference. Result has 113 places, 81 transitions, 473 flow [2021-06-10 12:26:08,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=113, PETRI_TRANSITIONS=81} [2021-06-10 12:26:08,482 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2021-06-10 12:26:08,482 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 81 transitions, 473 flow [2021-06-10 12:26:08,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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) [2021-06-10 12:26:08,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:08,482 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:08,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:26:08,483 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash 141561641, now seen corresponding path program 1 times [2021-06-10 12:26:08,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:08,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238039811] [2021-06-10 12:26:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:08,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:08,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:08,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:08,547 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:08,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:08,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:08,572 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:08,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:08,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:08,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238039811] [2021-06-10 12:26:08,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:08,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:08,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817465805] [2021-06-10 12:26:08,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:08,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:08,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:08,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:26:08,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 81 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 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) [2021-06-10 12:26:08,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:08,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:26:08,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:08,804 INFO L129 PetriNetUnfolder]: 191/575 cut-off events. [2021-06-10 12:26:08,804 INFO L130 PetriNetUnfolder]: For 1264/1643 co-relation queries the response was YES. [2021-06-10 12:26:08,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 575 events. 191/575 cut-off events. For 1264/1643 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3965 event pairs, 0 based on Foata normal form. 55/610 useless extension candidates. Maximal degree in co-relation 1887. Up to 171 conditions per place. [2021-06-10 12:26:08,810 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 17 selfloop transitions, 17 changer transitions 24/116 dead transitions. [2021-06-10 12:26:08,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 116 transitions, 785 flow [2021-06-10 12:26:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 845 transitions. [2021-06-10 12:26:08,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-06-10 12:26:08,812 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 845 transitions. [2021-06-10 12:26:08,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 845 transitions. [2021-06-10 12:26:08,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:08,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 845 transitions. [2021-06-10 12:26:08,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.0) internal successors, (845), 13 states have internal predecessors, (845), 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) [2021-06-10 12:26:08,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:08,817 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-06-10 12:26:08,817 INFO L185 Difference]: Start difference. First operand has 113 places, 81 transitions, 473 flow. Second operand 13 states and 845 transitions. [2021-06-10 12:26:08,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 116 transitions, 785 flow [2021-06-10 12:26:08,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 752 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-06-10 12:26:08,827 INFO L241 Difference]: Finished difference. Result has 124 places, 87 transitions, 566 flow [2021-06-10 12:26:08,827 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=566, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2021-06-10 12:26:08,827 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 55 predicate places. [2021-06-10 12:26:08,827 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 566 flow [2021-06-10 12:26:08,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 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) [2021-06-10 12:26:08,827 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:08,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:08,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:26:08,828 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash 180215324, now seen corresponding path program 1 times [2021-06-10 12:26:08,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:08,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994915154] [2021-06-10 12:26:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:08,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:08,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:08,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:08,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:08,896 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:08,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:08,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:08,922 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:08,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:08,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:08,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:08,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994915154] [2021-06-10 12:26:08,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:08,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:08,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298842840] [2021-06-10 12:26:08,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:08,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:08,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:08,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:08,935 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:26:08,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 87 transitions, 566 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 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) [2021-06-10 12:26:08,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:08,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:26:08,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:09,179 INFO L129 PetriNetUnfolder]: 61/347 cut-off events. [2021-06-10 12:26:09,179 INFO L130 PetriNetUnfolder]: For 1593/2256 co-relation queries the response was YES. [2021-06-10 12:26:09,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 347 events. 61/347 cut-off events. For 1593/2256 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2250 event pairs, 0 based on Foata normal form. 72/405 useless extension candidates. Maximal degree in co-relation 1317. Up to 97 conditions per place. [2021-06-10 12:26:09,183 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 11 selfloop transitions, 20 changer transitions 17/103 dead transitions. [2021-06-10 12:26:09,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 103 transitions, 786 flow [2021-06-10 12:26:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 12:26:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 12:26:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 958 transitions. [2021-06-10 12:26:09,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8515555555555555 [2021-06-10 12:26:09,186 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 958 transitions. [2021-06-10 12:26:09,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 958 transitions. [2021-06-10 12:26:09,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:09,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 958 transitions. [2021-06-10 12:26:09,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.86666666666667) internal successors, (958), 15 states have internal predecessors, (958), 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) [2021-06-10 12:26:09,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 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) [2021-06-10 12:26:09,193 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 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) [2021-06-10 12:26:09,193 INFO L185 Difference]: Start difference. First operand has 124 places, 87 transitions, 566 flow. Second operand 15 states and 958 transitions. [2021-06-10 12:26:09,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 103 transitions, 786 flow [2021-06-10 12:26:09,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 103 transitions, 727 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-06-10 12:26:09,201 INFO L241 Difference]: Finished difference. Result has 130 places, 83 transitions, 526 flow [2021-06-10 12:26:09,202 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=526, PETRI_PLACES=130, PETRI_TRANSITIONS=83} [2021-06-10 12:26:09,202 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 61 predicate places. [2021-06-10 12:26:09,202 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 83 transitions, 526 flow [2021-06-10 12:26:09,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 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) [2021-06-10 12:26:09,202 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:09,202 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:09,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:26:09,203 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:09,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1400496253, now seen corresponding path program 1 times [2021-06-10 12:26:09,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:09,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606694479] [2021-06-10 12:26:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:09,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:09,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:09,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:09,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:09,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:09,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:09,272 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:26:09,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:26:09,284 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:09,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:09,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:09,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:09,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:09,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:09,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:09,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:09,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606694479] [2021-06-10 12:26:09,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:09,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:09,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733995213] [2021-06-10 12:26:09,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:09,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:09,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:09,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:26:09,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 83 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 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) [2021-06-10 12:26:09,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:09,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:26:09,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:09,423 INFO L129 PetriNetUnfolder]: 20/184 cut-off events. [2021-06-10 12:26:09,424 INFO L130 PetriNetUnfolder]: For 497/520 co-relation queries the response was YES. [2021-06-10 12:26:09,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 184 events. 20/184 cut-off events. For 497/520 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 897 event pairs, 0 based on Foata normal form. 2/179 useless extension candidates. Maximal degree in co-relation 590. Up to 39 conditions per place. [2021-06-10 12:26:09,425 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-06-10 12:26:09,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 82 transitions, 573 flow [2021-06-10 12:26:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:26:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:26:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 465 transitions. [2021-06-10 12:26:09,427 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.775 [2021-06-10 12:26:09,427 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 465 transitions. [2021-06-10 12:26:09,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 465 transitions. [2021-06-10 12:26:09,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:09,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 465 transitions. [2021-06-10 12:26:09,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.125) internal successors, (465), 8 states have internal predecessors, (465), 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) [2021-06-10 12:26:09,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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) [2021-06-10 12:26:09,430 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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) [2021-06-10 12:26:09,430 INFO L185 Difference]: Start difference. First operand has 130 places, 83 transitions, 526 flow. Second operand 8 states and 465 transitions. [2021-06-10 12:26:09,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 82 transitions, 573 flow [2021-06-10 12:26:09,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 82 transitions, 465 flow, removed 21 selfloop flow, removed 18 redundant places. [2021-06-10 12:26:09,435 INFO L241 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2021-06-10 12:26:09,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2021-06-10 12:26:09,435 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2021-06-10 12:26:09,435 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2021-06-10 12:26:09,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 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) [2021-06-10 12:26:09,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:26:09,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:26:09 BasicIcfg [2021-06-10 12:26:09,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:26:09,443 INFO L168 Benchmark]: Toolchain (without parser) took 5419.00 ms. Allocated memory was 383.8 MB in the beginning and 474.0 MB in the end (delta: 90.2 MB). Free memory was 346.5 MB in the beginning and 424.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:09,443 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 383.8 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:26:09,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.54 ms. Allocated memory is still 383.8 MB. Free memory was 346.2 MB in the beginning and 346.7 MB in the end (delta: -463.3 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:09,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.53 ms. Allocated memory is still 383.8 MB. Free memory was 346.7 MB in the beginning and 344.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:09,445 INFO L168 Benchmark]: Boogie Preprocessor took 29.17 ms. Allocated memory is still 383.8 MB. Free memory was 344.6 MB in the beginning and 342.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:09,445 INFO L168 Benchmark]: RCFGBuilder took 446.08 ms. Allocated memory is still 383.8 MB. Free memory was 342.5 MB in the beginning and 319.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:09,445 INFO L168 Benchmark]: TraceAbstraction took 4390.13 ms. Allocated memory was 383.8 MB in the beginning and 474.0 MB in the end (delta: 90.2 MB). Free memory was 319.4 MB in the beginning and 424.6 MB in the end (delta: -105.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:26:09,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 383.8 MB. Free memory is still 364.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 486.54 ms. Allocated memory is still 383.8 MB. Free memory was 346.2 MB in the beginning and 346.7 MB in the end (delta: -463.3 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.53 ms. Allocated memory is still 383.8 MB. Free memory was 346.7 MB in the beginning and 344.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.17 ms. Allocated memory is still 383.8 MB. Free memory was 344.6 MB in the beginning and 342.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 446.08 ms. Allocated memory is still 383.8 MB. Free memory was 342.5 MB in the beginning and 319.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4390.13 ms. Allocated memory was 383.8 MB in the beginning and 474.0 MB in the end (delta: 90.2 MB). Free memory was 319.4 MB in the beginning and 424.6 MB in the end (delta: -105.2 MB). There was no memory consumed. Max. memory is 16.0 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 CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4261.2ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2631.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 69.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 377 SDslu, 516 SDs, 0 SdLazy, 492 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 402.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1625.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=7, InterpolantAutomatonStates: 117, 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: 33.7ms SsaConstructionTime, 206.9ms SatisfiabilityAnalysisTime, 1123.4ms InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 1910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...