/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:08:03,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:08:03,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:08:03,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:08:03,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:08:03,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:08:03,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:08:03,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:08:03,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:08:03,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:08:03,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:08:03,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:08:03,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:08:03,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:08:03,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:08:03,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:08:03,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:08:03,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:08:03,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:08:03,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:08:03,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:08:03,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:08:03,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:08:03,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:08:03,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:08:03,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:08:03,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:08:03,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:08:03,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:08:03,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:08:03,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:08:03,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:08:03,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:08:03,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:08:03,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:08:03,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:08:03,814 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-RepeatedVariableLbe.epf [2021-03-25 05:08:03,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:08:03,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:08:03,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:08:03,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:08:03,840 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:08:03,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:08:03,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:08:03,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:08:03,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:08:03,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:08:03,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:08:03,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:08:03,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:08:03,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:08:03,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:08:03,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:08:03,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:08:03,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:08:03,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:08:03,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:08:03,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:08:03,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:08:03,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:08:03,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:08:03,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:08:03,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:08:03,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:08:03,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:08:03,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:08:03,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:08:03,844 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:08:04,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:08:04,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:08:04,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:08:04,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:08:04,104 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:08:04,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-25 05:08:04,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d465b25f/dba4923597714bc49e6da90312d7b49f/FLAGc34868b3f [2021-03-25 05:08:04,585 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:08:04,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-25 05:08:04,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d465b25f/dba4923597714bc49e6da90312d7b49f/FLAGc34868b3f [2021-03-25 05:08:04,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d465b25f/dba4923597714bc49e6da90312d7b49f [2021-03-25 05:08:04,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:08:04,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:08:04,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:08:04,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:08:04,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:08:04,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:08:04" (1/1) ... [2021-03-25 05:08:04,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a0378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:04, skipping insertion in model container [2021-03-25 05:08:04,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:08:04" (1/1) ... [2021-03-25 05:08:04,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:08:04,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:08:04,797 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/safe026_tso.oepc.i[950,963] [2021-03-25 05:08:04,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:08:04,935 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:08:04,943 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/safe026_tso.oepc.i[950,963] [2021-03-25 05:08:04,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:08:05,022 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:08:05,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05 WrapperNode [2021-03-25 05:08:05,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:08:05,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:08:05,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:08:05,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:08:05,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:08:05,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:08:05,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:08:05,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:08:05,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... [2021-03-25 05:08:05,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:08:05,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:08:05,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:08:05,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:08:05,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:08:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:08:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:08:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:08:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:08:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:08:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:08:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:08:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:08:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:08:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:08:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:08:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:08:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:08:05,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:08:05,128 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:08:05,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:08:05,439 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:08:05,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:08:05 BoogieIcfgContainer [2021-03-25 05:08:05,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:08:05,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:08:05,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:08:05,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:08:05,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:08:04" (1/3) ... [2021-03-25 05:08:05,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245fd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:08:05, skipping insertion in model container [2021-03-25 05:08:05,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:05" (2/3) ... [2021-03-25 05:08:05,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7245fd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:08:05, skipping insertion in model container [2021-03-25 05:08:05,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:08:05" (3/3) ... [2021-03-25 05:08:05,446 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-03-25 05:08:05,450 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:08:05,453 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:08:05,453 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:08:05,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,478 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,479 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,479 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,483 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,485 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,492 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,493 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,493 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,493 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:05,494 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:08:05,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:08:05,517 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:08:05,517 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:08:05,517 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:08:05,517 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:08:05,517 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:08:05,517 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:08:05,517 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:08:05,517 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:08:05,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:08:05,544 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 05:08:05,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:05,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 05:08:05,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:08:05,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 05:08:05,549 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:05,554 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:08:05,556 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:08:05,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 05:08:05,565 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 05:08:05,565 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:05,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 05:08:05,567 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-25 05:08:06,557 INFO L154 LiptonReduction]: Checked pairs total: 784 [2021-03-25 05:08:06,558 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 05:08:06,559 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1011 [2021-03-25 05:08:06,565 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:08:06,565 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:06,565 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:06,565 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:06,566 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1769401119, now seen corresponding path program 1 times [2021-03-25 05:08:06,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:06,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797268835] [2021-03-25 05:08:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:06,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:06,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:06,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:06,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:06,776 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:08:06,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:08:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:06,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797268835] [2021-03-25 05:08:06,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:06,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:06,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287145232] [2021-03-25 05:08:06,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:06,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:06,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:06,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:06,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-25 05:08:06,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:06,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:06,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-25 05:08:06,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:06,844 INFO L129 PetriNetUnfolder]: 21/80 cut-off events. [2021-03-25 05:08:06,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:06,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 80 events. 21/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 270 event pairs, 5 based on Foata normal form. 5/78 useless extension candidates. Maximal degree in co-relation 127. Up to 37 conditions per place. [2021-03-25 05:08:06,849 INFO L132 encePairwiseOnDemand]: 104/110 looper letters, 6 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2021-03-25 05:08:06,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 81 flow [2021-03-25 05:08:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-25 05:08:06,861 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8477272727272728 [2021-03-25 05:08:06,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-25 05:08:06,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-25 05:08:06,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:06,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-25 05:08:06,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 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) [2021-03-25 05:08:06,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:06,876 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:06,877 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 4 states and 373 transitions. [2021-03-25 05:08:06,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 81 flow [2021-03-25 05:08:06,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:08:06,880 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 84 flow [2021-03-25 05:08:06,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-25 05:08:06,881 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:08:06,881 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:06,881 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 24 transitions, 84 flow [2021-03-25 05:08:06,882 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 24 transitions, 84 flow [2021-03-25 05:08:06,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 84 flow [2021-03-25 05:08:06,907 INFO L129 PetriNetUnfolder]: 19/78 cut-off events. [2021-03-25 05:08:06,907 INFO L130 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2021-03-25 05:08:06,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 78 events. 19/78 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 274 event pairs, 10 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 148. Up to 34 conditions per place. [2021-03-25 05:08:06,908 INFO L142 LiptonReduction]: Number of co-enabled transitions 152 [2021-03-25 05:08:07,266 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:08:07,473 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:08:07,532 INFO L154 LiptonReduction]: Checked pairs total: 255 [2021-03-25 05:08:07,532 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:08:07,532 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 651 [2021-03-25 05:08:07,533 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 74 flow [2021-03-25 05:08:07,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:07,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:07,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:08:07,534 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:07,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash -986296276, now seen corresponding path program 1 times [2021-03-25 05:08:07,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:07,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306035272] [2021-03-25 05:08:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:07,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:07,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,597 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:08:07,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:08:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:07,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306035272] [2021-03-25 05:08:07,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:07,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:07,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505114214] [2021-03-25 05:08:07,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:07,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:07,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:07,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:07,606 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2021-03-25 05:08:07,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:07,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2021-03-25 05:08:07,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:07,627 INFO L129 PetriNetUnfolder]: 15/61 cut-off events. [2021-03-25 05:08:07,627 INFO L130 PetriNetUnfolder]: For 33/36 co-relation queries the response was YES. [2021-03-25 05:08:07,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 61 events. 15/61 cut-off events. For 33/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 195 event pairs, 3 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 163. Up to 30 conditions per place. [2021-03-25 05:08:07,628 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 6 selfloop transitions, 10 changer transitions 0/26 dead transitions. [2021-03-25 05:08:07,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 140 flow [2021-03-25 05:08:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2021-03-25 05:08:07,630 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8217391304347826 [2021-03-25 05:08:07,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2021-03-25 05:08:07,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2021-03-25 05:08:07,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:07,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2021-03-25 05:08:07,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,632 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 74 flow. Second operand 4 states and 378 transitions. [2021-03-25 05:08:07,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 140 flow [2021-03-25 05:08:07,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:08:07,634 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 133 flow [2021-03-25 05:08:07,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2021-03-25 05:08:07,634 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-03-25 05:08:07,634 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:07,634 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 24 transitions, 133 flow [2021-03-25 05:08:07,635 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 24 transitions, 133 flow [2021-03-25 05:08:07,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 24 transitions, 133 flow [2021-03-25 05:08:07,640 INFO L129 PetriNetUnfolder]: 14/62 cut-off events. [2021-03-25 05:08:07,640 INFO L130 PetriNetUnfolder]: For 60/65 co-relation queries the response was YES. [2021-03-25 05:08:07,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 62 events. 14/62 cut-off events. For 60/65 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 222 event pairs, 7 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 165. Up to 26 conditions per place. [2021-03-25 05:08:07,641 INFO L142 LiptonReduction]: Number of co-enabled transitions 134 [2021-03-25 05:08:07,642 INFO L154 LiptonReduction]: Checked pairs total: 153 [2021-03-25 05:08:07,642 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:07,642 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:08:07,643 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 133 flow [2021-03-25 05:08:07,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:07,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:07,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:08:07,643 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2138332886, now seen corresponding path program 1 times [2021-03-25 05:08:07,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:07,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585022292] [2021-03-25 05:08:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:07,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:07,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585022292] [2021-03-25 05:08:07,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:07,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:08:07,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643540949] [2021-03-25 05:08:07,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:07,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:07,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:07,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:07,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-25 05:08:07,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:07,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-25 05:08:07,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:07,735 INFO L129 PetriNetUnfolder]: 89/209 cut-off events. [2021-03-25 05:08:07,735 INFO L130 PetriNetUnfolder]: For 294/354 co-relation queries the response was YES. [2021-03-25 05:08:07,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 209 events. 89/209 cut-off events. For 294/354 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1115 event pairs, 33 based on Foata normal form. 29/223 useless extension candidates. Maximal degree in co-relation 523. Up to 128 conditions per place. [2021-03-25 05:08:07,738 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 8 selfloop transitions, 8 changer transitions 0/34 dead transitions. [2021-03-25 05:08:07,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 185 flow [2021-03-25 05:08:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:08:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:08:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 05:08:07,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878260869565218 [2021-03-25 05:08:07,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 05:08:07,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 05:08:07,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:07,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 05:08:07,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,743 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 133 flow. Second operand 5 states and 453 transitions. [2021-03-25 05:08:07,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 185 flow [2021-03-25 05:08:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 185 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:08:07,745 INFO L241 Difference]: Finished difference. Result has 40 places, 31 transitions, 193 flow [2021-03-25 05:08:07,745 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2021-03-25 05:08:07,745 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 05:08:07,745 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:07,745 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 31 transitions, 193 flow [2021-03-25 05:08:07,745 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 31 transitions, 193 flow [2021-03-25 05:08:07,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 31 transitions, 193 flow [2021-03-25 05:08:07,757 INFO L129 PetriNetUnfolder]: 91/218 cut-off events. [2021-03-25 05:08:07,757 INFO L130 PetriNetUnfolder]: For 364/405 co-relation queries the response was YES. [2021-03-25 05:08:07,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 218 events. 91/218 cut-off events. For 364/405 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1159 event pairs, 38 based on Foata normal form. 5/206 useless extension candidates. Maximal degree in co-relation 691. Up to 144 conditions per place. [2021-03-25 05:08:07,759 INFO L142 LiptonReduction]: Number of co-enabled transitions 220 [2021-03-25 05:08:07,763 INFO L154 LiptonReduction]: Checked pairs total: 137 [2021-03-25 05:08:07,763 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:08:07,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 05:08:07,764 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 187 flow [2021-03-25 05:08:07,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:07,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:07,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:08:07,764 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:07,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1177565061, now seen corresponding path program 1 times [2021-03-25 05:08:07,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:07,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56955208] [2021-03-25 05:08:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:07,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:07,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56955208] [2021-03-25 05:08:07,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:07,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:07,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417814331] [2021-03-25 05:08:07,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:08:07,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:07,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:08:07,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:08:07,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-25 05:08:07,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:07,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-25 05:08:07,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:07,847 INFO L129 PetriNetUnfolder]: 47/138 cut-off events. [2021-03-25 05:08:07,847 INFO L130 PetriNetUnfolder]: For 483/585 co-relation queries the response was YES. [2021-03-25 05:08:07,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 138 events. 47/138 cut-off events. For 483/585 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 676 event pairs, 5 based on Foata normal form. 44/177 useless extension candidates. Maximal degree in co-relation 524. Up to 99 conditions per place. [2021-03-25 05:08:07,848 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 5 selfloop transitions, 11 changer transitions 3/37 dead transitions. [2021-03-25 05:08:07,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 265 flow [2021-03-25 05:08:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:08:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:08:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2021-03-25 05:08:07,850 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7869565217391304 [2021-03-25 05:08:07,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2021-03-25 05:08:07,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2021-03-25 05:08:07,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:07,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2021-03-25 05:08:07,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,852 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,852 INFO L185 Difference]: Start difference. First operand has 40 places, 30 transitions, 187 flow. Second operand 6 states and 543 transitions. [2021-03-25 05:08:07,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 265 flow [2021-03-25 05:08:07,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 259 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:08:07,857 INFO L241 Difference]: Finished difference. Result has 44 places, 34 transitions, 251 flow [2021-03-25 05:08:07,857 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=251, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2021-03-25 05:08:07,857 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-25 05:08:07,857 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:07,857 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 34 transitions, 251 flow [2021-03-25 05:08:07,857 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 34 transitions, 251 flow [2021-03-25 05:08:07,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 34 transitions, 251 flow [2021-03-25 05:08:07,867 INFO L129 PetriNetUnfolder]: 45/139 cut-off events. [2021-03-25 05:08:07,867 INFO L130 PetriNetUnfolder]: For 441/485 co-relation queries the response was YES. [2021-03-25 05:08:07,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 139 events. 45/139 cut-off events. For 441/485 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 692 event pairs, 7 based on Foata normal form. 4/137 useless extension candidates. Maximal degree in co-relation 570. Up to 100 conditions per place. [2021-03-25 05:08:07,868 INFO L142 LiptonReduction]: Number of co-enabled transitions 202 [2021-03-25 05:08:07,874 INFO L154 LiptonReduction]: Checked pairs total: 136 [2021-03-25 05:08:07,874 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:08:07,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 05:08:07,876 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 243 flow [2021-03-25 05:08:07,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,877 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:07,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:07,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:08:07,877 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1990665370, now seen corresponding path program 1 times [2021-03-25 05:08:07,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:07,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407766558] [2021-03-25 05:08:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:07,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:07,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:07,935 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:08:07,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:08:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:07,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407766558] [2021-03-25 05:08:07,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:07,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:07,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726894161] [2021-03-25 05:08:07,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:08:07,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:07,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:08:07,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:08:07,945 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 115 [2021-03-25 05:08:07,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:07,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 115 [2021-03-25 05:08:07,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:07,976 INFO L129 PetriNetUnfolder]: 51/153 cut-off events. [2021-03-25 05:08:07,976 INFO L130 PetriNetUnfolder]: For 557/593 co-relation queries the response was YES. [2021-03-25 05:08:07,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 153 events. 51/153 cut-off events. For 557/593 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 743 event pairs, 6 based on Foata normal form. 13/161 useless extension candidates. Maximal degree in co-relation 640. Up to 106 conditions per place. [2021-03-25 05:08:07,977 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 5 selfloop transitions, 7 changer transitions 8/36 dead transitions. [2021-03-25 05:08:07,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 292 flow [2021-03-25 05:08:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:08:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:08:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2021-03-25 05:08:07,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8173913043478261 [2021-03-25 05:08:07,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2021-03-25 05:08:07,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2021-03-25 05:08:07,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:07,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2021-03-25 05:08:07,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,981 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,981 INFO L185 Difference]: Start difference. First operand has 44 places, 33 transitions, 243 flow. Second operand 5 states and 470 transitions. [2021-03-25 05:08:07,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 292 flow [2021-03-25 05:08:07,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 266 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-25 05:08:07,984 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 189 flow [2021-03-25 05:08:07,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2021-03-25 05:08:07,984 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-25 05:08:07,984 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:07,984 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 28 transitions, 189 flow [2021-03-25 05:08:07,984 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 28 transitions, 189 flow [2021-03-25 05:08:07,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 28 transitions, 189 flow [2021-03-25 05:08:07,990 INFO L129 PetriNetUnfolder]: 28/87 cut-off events. [2021-03-25 05:08:07,990 INFO L130 PetriNetUnfolder]: For 168/178 co-relation queries the response was YES. [2021-03-25 05:08:07,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 87 events. 28/87 cut-off events. For 168/178 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 306 event pairs, 4 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 301. Up to 37 conditions per place. [2021-03-25 05:08:07,991 INFO L142 LiptonReduction]: Number of co-enabled transitions 130 [2021-03-25 05:08:07,992 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 05:08:07,992 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:07,992 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:08:07,995 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 189 flow [2021-03-25 05:08:07,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:07,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:07,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:07,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:08:07,995 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash -781086922, now seen corresponding path program 2 times [2021-03-25 05:08:07,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:07,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602702701] [2021-03-25 05:08:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:08,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:08,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:08,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:08,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:08,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602702701] [2021-03-25 05:08:08,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:08,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:08:08,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025704858] [2021-03-25 05:08:08,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:08:08,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:08,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:08:08,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:08:08,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-25 05:08:08,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:08,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-25 05:08:08,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:08,095 INFO L129 PetriNetUnfolder]: 21/74 cut-off events. [2021-03-25 05:08:08,095 INFO L130 PetriNetUnfolder]: For 182/220 co-relation queries the response was YES. [2021-03-25 05:08:08,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 74 events. 21/74 cut-off events. For 182/220 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 256 event pairs, 0 based on Foata normal form. 26/98 useless extension candidates. Maximal degree in co-relation 296. Up to 33 conditions per place. [2021-03-25 05:08:08,096 INFO L132 encePairwiseOnDemand]: 109/115 looper letters, 2 selfloop transitions, 11 changer transitions 3/32 dead transitions. [2021-03-25 05:08:08,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 251 flow [2021-03-25 05:08:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:08:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:08:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2021-03-25 05:08:08,097 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7788819875776397 [2021-03-25 05:08:08,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2021-03-25 05:08:08,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2021-03-25 05:08:08,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:08,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2021-03-25 05:08:08,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 115.0) internal successors, (920), 8 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,100 INFO L185 Difference]: Start difference. First operand has 43 places, 28 transitions, 189 flow. Second operand 7 states and 627 transitions. [2021-03-25 05:08:08,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 251 flow [2021-03-25 05:08:08,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 32 transitions, 219 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-25 05:08:08,101 INFO L241 Difference]: Finished difference. Result has 48 places, 29 transitions, 205 flow [2021-03-25 05:08:08,102 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2021-03-25 05:08:08,102 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-25 05:08:08,102 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:08,102 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 29 transitions, 205 flow [2021-03-25 05:08:08,102 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 29 transitions, 205 flow [2021-03-25 05:08:08,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 29 transitions, 205 flow [2021-03-25 05:08:08,108 INFO L129 PetriNetUnfolder]: 18/72 cut-off events. [2021-03-25 05:08:08,108 INFO L130 PetriNetUnfolder]: For 152/159 co-relation queries the response was YES. [2021-03-25 05:08:08,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 72 events. 18/72 cut-off events. For 152/159 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 277 event pairs, 1 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 281. Up to 33 conditions per place. [2021-03-25 05:08:08,109 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 05:08:08,172 INFO L154 LiptonReduction]: Checked pairs total: 76 [2021-03-25 05:08:08,172 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:08:08,172 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 70 [2021-03-25 05:08:08,173 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 193 flow [2021-03-25 05:08:08,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,173 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:08,173 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:08,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:08:08,173 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1983194249, now seen corresponding path program 1 times [2021-03-25 05:08:08,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:08,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137471392] [2021-03-25 05:08:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:08,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:08,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:08,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:08,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:08,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137471392] [2021-03-25 05:08:08,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:08,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:08,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591878936] [2021-03-25 05:08:08,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:08,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:08,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:08,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:08,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 116 [2021-03-25 05:08:08,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:08,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 116 [2021-03-25 05:08:08,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:08,238 INFO L129 PetriNetUnfolder]: 22/70 cut-off events. [2021-03-25 05:08:08,238 INFO L130 PetriNetUnfolder]: For 412/435 co-relation queries the response was YES. [2021-03-25 05:08:08,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 70 events. 22/70 cut-off events. For 412/435 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 241 event pairs, 0 based on Foata normal form. 10/78 useless extension candidates. Maximal degree in co-relation 273. Up to 34 conditions per place. [2021-03-25 05:08:08,239 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-25 05:08:08,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 27 transitions, 189 flow [2021-03-25 05:08:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2021-03-25 05:08:08,240 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8383620689655172 [2021-03-25 05:08:08,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2021-03-25 05:08:08,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2021-03-25 05:08:08,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:08,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2021-03-25 05:08:08,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,242 INFO L185 Difference]: Start difference. First operand has 45 places, 27 transitions, 193 flow. Second operand 4 states and 389 transitions. [2021-03-25 05:08:08,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 27 transitions, 189 flow [2021-03-25 05:08:08,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 140 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-03-25 05:08:08,243 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-25 05:08:08,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-25 05:08:08,243 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-25 05:08:08,244 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:08,244 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 05:08:08,244 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 05:08:08,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:08:08,244 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:08:08,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:08,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:08:08,244 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:08:08,245 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:08:08,245 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:08,245 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:08:08,246 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:08:08,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:08,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:08:08,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:08:08 BasicIcfg [2021-03-25 05:08:08,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:08:08,253 INFO L168 Benchmark]: Toolchain (without parser) took 3638.54 ms. Allocated memory was 255.9 MB in the beginning and 440.4 MB in the end (delta: 184.5 MB). Free memory was 235.3 MB in the beginning and 204.2 MB in the end (delta: 31.1 MB). Peak memory consumption was 215.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:08,254 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:08:08,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.87 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 235.3 MB in the beginning and 329.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:08,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.94 ms. Allocated memory is still 367.0 MB. Free memory was 329.4 MB in the beginning and 327.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:08,255 INFO L168 Benchmark]: Boogie Preprocessor took 25.44 ms. Allocated memory is still 367.0 MB. Free memory was 327.7 MB in the beginning and 326.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:08,255 INFO L168 Benchmark]: RCFGBuilder took 361.24 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 342.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:08,255 INFO L168 Benchmark]: TraceAbstraction took 2806.48 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 342.3 MB in the beginning and 204.2 MB in the end (delta: 138.1 MB). Peak memory consumption was 212.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:08,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 408.87 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 235.3 MB in the beginning and 329.8 MB in the end (delta: -94.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.94 ms. Allocated memory is still 367.0 MB. Free memory was 329.4 MB in the beginning and 327.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.44 ms. Allocated memory is still 367.0 MB. Free memory was 327.7 MB in the beginning and 326.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 361.24 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 342.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2806.48 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 342.3 MB in the beginning and 204.2 MB in the end (delta: 138.1 MB). Peak memory consumption was 212.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1002.1ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 784 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 527, positive: 503, positive conditional: 0, positive unconditional: 503, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 379, positive: 367, positive conditional: 0, positive unconditional: 367, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 379, positive: 367, positive conditional: 0, positive unconditional: 367, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 527, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 379, unknown conditional: 0, unknown unconditional: 379] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 650.3ms, 34 PlacesBefore, 29 PlacesAfterwards, 24 TransitionsBefore, 19 TransitionsAfterwards, 152 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 255 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 86, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 86, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4ms, 33 PlacesBefore, 33 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 134 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 153 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.7ms, 40 PlacesBefore, 40 PlacesAfterwards, 31 TransitionsBefore, 30 TransitionsAfterwards, 220 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 137 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.8ms, 44 PlacesBefore, 44 PlacesAfterwards, 34 TransitionsBefore, 33 TransitionsAfterwards, 202 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 136 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 56, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9ms, 43 PlacesBefore, 43 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 130 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 70.3ms, 48 PlacesBefore, 45 PlacesAfterwards, 29 TransitionsBefore, 27 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 76 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 64, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 64, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 39 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2732.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 329.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1044.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 21 SDslu, 21 SDs, 0 SdLazy, 116 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=4, InterpolantAutomatonStates: 35, 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: 14.5ms SsaConstructionTime, 136.9ms SatisfiabilityAnalysisTime, 304.2ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...