/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/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:03:04,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:03:04,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:03:04,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:03:04,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:03:04,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:03:04,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:03:04,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:03:04,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:03:04,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:03:04,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:03:04,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:03:04,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:03:04,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:03:04,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:03:04,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:03:04,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:03:04,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:03:04,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:03:04,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:03:04,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:03:04,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:03:04,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:03:04,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:03:04,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:03:04,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:03:04,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:03:04,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:03:04,689 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 05:03:04,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:03:04,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:03:04,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:03:04,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:03:04,733 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:03:04,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:03:04,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:03:04,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:03:04,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:03:04,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:03:04,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:03:04,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:03:04,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:03:04,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:03:04,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:03:04,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:03:04,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:03:04,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:03:04,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:03:04,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:03:04,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:03:04,736 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:03:04,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:03:04,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:03:04,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:03:05,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:03:05,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:03:05,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:03:05,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:03:05,067 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:03:05,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-25 05:03:05,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d520130e/d03b8a6f174c48909dba91e2a41803db/FLAGff91d1542 [2021-03-25 05:03:05,678 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:03:05,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-25 05:03:05,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d520130e/d03b8a6f174c48909dba91e2a41803db/FLAGff91d1542 [2021-03-25 05:03:05,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d520130e/d03b8a6f174c48909dba91e2a41803db [2021-03-25 05:03:05,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:03:05,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:03:05,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:03:05,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:03:05,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:03:05,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:03:05" (1/1) ... [2021-03-25 05:03:05,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1430939a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:05, skipping insertion in model container [2021-03-25 05:03:05,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:03:05" (1/1) ... [2021-03-25 05:03:05,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:03:05,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:03:06,140 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i[950,963] [2021-03-25 05:03:06,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:03:06,314 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:03:06,325 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i[950,963] [2021-03-25 05:03:06,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:03:06,435 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:03:06,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06 WrapperNode [2021-03-25 05:03:06,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:03:06,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:03:06,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:03:06,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:03:06,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:03:06,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:03:06,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:03:06,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:03:06,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (1/1) ... [2021-03-25 05:03:06,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:03:06,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:03:06,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:03:06,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:03:06,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (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 05:03:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:03:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:03:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:03:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:03:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:03:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:03:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:03:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:03:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:03:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:03:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:03:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:03:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:03:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:03:06,610 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 05:03:07,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:03:07,030 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:03:07,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:03:07 BoogieIcfgContainer [2021-03-25 05:03:07,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:03:07,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:03:07,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:03:07,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:03:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:03:05" (1/3) ... [2021-03-25 05:03:07,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b189ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:03:07, skipping insertion in model container [2021-03-25 05:03:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:03:06" (2/3) ... [2021-03-25 05:03:07,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b189ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:03:07, skipping insertion in model container [2021-03-25 05:03:07,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:03:07" (3/3) ... [2021-03-25 05:03:07,037 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-03-25 05:03:07,042 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:03:07,046 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:03:07,046 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:03:07,077 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,077 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,077 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,078 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,078 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,078 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,078 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,078 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,080 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,080 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,080 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,081 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,081 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,084 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,097 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,097 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,097 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,097 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:03:07,110 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:03:07,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:03:07,140 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:03:07,141 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:03:07,141 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:03:07,141 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:03:07,141 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:03:07,141 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:03:07,141 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:03:07,141 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:03:07,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:03:07,189 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 05:03:07,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:03:07,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:03:07,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:03:07,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 05:03:07,214 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:07,222 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:03:07,225 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:03:07,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 05:03:07,244 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 05:03:07,244 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:03:07,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:03:07,246 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:03:08,594 INFO L154 LiptonReduction]: Checked pairs total: 1194 [2021-03-25 05:03:08,595 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-25 05:03:08,596 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1383 [2021-03-25 05:03:08,604 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:03:08,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:03:08,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:08,605 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:08,605 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:08,609 INFO L82 PathProgramCache]: Analyzing trace with hash 509991216, now seen corresponding path program 1 times [2021-03-25 05:03:08,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:08,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406708741] [2021-03-25 05:03:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:08,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:08,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:08,806 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:08,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:08,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:08,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:08,830 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 05:03:08,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406708741] [2021-03-25 05:03:08,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:08,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:03:08,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700085565] [2021-03-25 05:03:08,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:03:08,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:08,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:03:08,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:03:08,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 114 [2021-03-25 05:03:08,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:08,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:08,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 114 [2021-03-25 05:03:08,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:08,970 INFO L129 PetriNetUnfolder]: 213/439 cut-off events. [2021-03-25 05:03:08,970 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:03:08,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 439 events. 213/439 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2310 event pairs, 49 based on Foata normal form. 39/465 useless extension candidates. Maximal degree in co-relation 802. Up to 137 conditions per place. [2021-03-25 05:03:08,975 INFO L132 encePairwiseOnDemand]: 105/114 looper letters, 10 selfloop transitions, 7 changer transitions 13/41 dead transitions. [2021-03-25 05:03:08,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 151 flow [2021-03-25 05:03:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:03:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:03:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2021-03-25 05:03:08,987 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.775438596491228 [2021-03-25 05:03:08,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2021-03-25 05:03:08,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2021-03-25 05:03:08,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:08,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2021-03-25 05:03:08,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:09,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:09,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:09,002 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 442 transitions. [2021-03-25 05:03:09,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 151 flow [2021-03-25 05:03:09,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:03:09,006 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 118 flow [2021-03-25 05:03:09,008 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-25 05:03:09,008 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:03:09,008 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:09,009 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 27 transitions, 118 flow [2021-03-25 05:03:09,009 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 27 transitions, 118 flow [2021-03-25 05:03:09,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 118 flow [2021-03-25 05:03:09,031 INFO L129 PetriNetUnfolder]: 118/271 cut-off events. [2021-03-25 05:03:09,032 INFO L130 PetriNetUnfolder]: For 149/171 co-relation queries the response was YES. [2021-03-25 05:03:09,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 271 events. 118/271 cut-off events. For 149/171 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1332 event pairs, 33 based on Foata normal form. 8/267 useless extension candidates. Maximal degree in co-relation 681. Up to 104 conditions per place. [2021-03-25 05:03:09,036 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-25 05:03:09,442 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:03:09,699 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:03:09,786 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 05:03:09,786 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:03:09,786 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 778 [2021-03-25 05:03:09,788 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 112 flow [2021-03-25 05:03:09,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:09,788 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:09,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:09,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:03:09,789 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:09,790 INFO L82 PathProgramCache]: Analyzing trace with hash 17191968, now seen corresponding path program 1 times [2021-03-25 05:03:09,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:09,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773360706] [2021-03-25 05:03:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:09,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:09,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:09,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:09,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:09,905 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:09,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:09,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:09,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:03:09,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773360706] [2021-03-25 05:03:09,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:09,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:03:09,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368092530] [2021-03-25 05:03:09,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:03:09,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:09,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:03:09,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:03:09,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 117 [2021-03-25 05:03:09,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:09,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:09,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 117 [2021-03-25 05:03:09,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:10,015 INFO L129 PetriNetUnfolder]: 135/318 cut-off events. [2021-03-25 05:03:10,015 INFO L130 PetriNetUnfolder]: For 315/416 co-relation queries the response was YES. [2021-03-25 05:03:10,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 318 events. 135/318 cut-off events. For 315/416 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1649 event pairs, 7 based on Foata normal form. 37/348 useless extension candidates. Maximal degree in co-relation 1066. Up to 125 conditions per place. [2021-03-25 05:03:10,020 INFO L132 encePairwiseOnDemand]: 108/117 looper letters, 16 selfloop transitions, 8 changer transitions 21/54 dead transitions. [2021-03-25 05:03:10,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 380 flow [2021-03-25 05:03:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:03:10,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:03:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2021-03-25 05:03:10,025 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7472527472527473 [2021-03-25 05:03:10,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2021-03-25 05:03:10,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2021-03-25 05:03:10,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:10,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2021-03-25 05:03:10,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 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 05:03:10,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,032 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,032 INFO L185 Difference]: Start difference. First operand has 31 places, 24 transitions, 112 flow. Second operand 7 states and 612 transitions. [2021-03-25 05:03:10,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 380 flow [2021-03-25 05:03:10,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:03:10,038 INFO L241 Difference]: Finished difference. Result has 41 places, 28 transitions, 170 flow [2021-03-25 05:03:10,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2021-03-25 05:03:10,039 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-25 05:03:10,039 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:10,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 28 transitions, 170 flow [2021-03-25 05:03:10,041 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 28 transitions, 170 flow [2021-03-25 05:03:10,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 28 transitions, 170 flow [2021-03-25 05:03:10,058 INFO L129 PetriNetUnfolder]: 80/207 cut-off events. [2021-03-25 05:03:10,059 INFO L130 PetriNetUnfolder]: For 332/389 co-relation queries the response was YES. [2021-03-25 05:03:10,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 207 events. 80/207 cut-off events. For 332/389 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1006 event pairs, 10 based on Foata normal form. 20/222 useless extension candidates. Maximal degree in co-relation 640. Up to 87 conditions per place. [2021-03-25 05:03:10,067 INFO L142 LiptonReduction]: Number of co-enabled transitions 182 [2021-03-25 05:03:10,070 INFO L154 LiptonReduction]: Checked pairs total: 15 [2021-03-25 05:03:10,070 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:03:10,070 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 05:03:10,071 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 170 flow [2021-03-25 05:03:10,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,071 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:10,071 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:10,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:03:10,072 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:10,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1298501072, now seen corresponding path program 1 times [2021-03-25 05:03:10,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:10,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767884283] [2021-03-25 05:03:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:10,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:10,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,151 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:10,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:10,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,174 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 05:03:10,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767884283] [2021-03-25 05:03:10,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:10,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:03:10,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881125569] [2021-03-25 05:03:10,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:03:10,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:10,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:03:10,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:03:10,181 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 117 [2021-03-25 05:03:10,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:10,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 117 [2021-03-25 05:03:10,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:10,265 INFO L129 PetriNetUnfolder]: 82/224 cut-off events. [2021-03-25 05:03:10,265 INFO L130 PetriNetUnfolder]: For 740/901 co-relation queries the response was YES. [2021-03-25 05:03:10,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 224 events. 82/224 cut-off events. For 740/901 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1124 event pairs, 9 based on Foata normal form. 31/250 useless extension candidates. Maximal degree in co-relation 874. Up to 87 conditions per place. [2021-03-25 05:03:10,269 INFO L132 encePairwiseOnDemand]: 108/117 looper letters, 15 selfloop transitions, 13 changer transitions 19/56 dead transitions. [2021-03-25 05:03:10,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 464 flow [2021-03-25 05:03:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:03:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:03:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2021-03-25 05:03:10,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7448107448107448 [2021-03-25 05:03:10,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2021-03-25 05:03:10,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2021-03-25 05:03:10,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:10,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2021-03-25 05:03:10,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,276 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 170 flow. Second operand 7 states and 610 transitions. [2021-03-25 05:03:10,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 464 flow [2021-03-25 05:03:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 449 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-25 05:03:10,282 INFO L241 Difference]: Finished difference. Result has 48 places, 32 transitions, 269 flow [2021-03-25 05:03:10,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=48, PETRI_TRANSITIONS=32} [2021-03-25 05:03:10,283 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-25 05:03:10,283 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:10,283 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 32 transitions, 269 flow [2021-03-25 05:03:10,284 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 32 transitions, 269 flow [2021-03-25 05:03:10,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 32 transitions, 269 flow [2021-03-25 05:03:10,298 INFO L129 PetriNetUnfolder]: 55/154 cut-off events. [2021-03-25 05:03:10,298 INFO L130 PetriNetUnfolder]: For 462/546 co-relation queries the response was YES. [2021-03-25 05:03:10,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 154 events. 55/154 cut-off events. For 462/546 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 681 event pairs, 3 based on Foata normal form. 7/155 useless extension candidates. Maximal degree in co-relation 616. Up to 60 conditions per place. [2021-03-25 05:03:10,300 INFO L142 LiptonReduction]: Number of co-enabled transitions 200 [2021-03-25 05:03:10,305 INFO L154 LiptonReduction]: Checked pairs total: 70 [2021-03-25 05:03:10,305 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:03:10,305 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 05:03:10,310 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 269 flow [2021-03-25 05:03:10,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,311 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:10,311 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:10,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:03:10,311 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:10,312 INFO L82 PathProgramCache]: Analyzing trace with hash -314122702, now seen corresponding path program 1 times [2021-03-25 05:03:10,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:10,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635592642] [2021-03-25 05:03:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:10,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,349 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:10,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:10,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,362 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 05:03:10,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635592642] [2021-03-25 05:03:10,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:10,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:03:10,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240615017] [2021-03-25 05:03:10,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:03:10,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:03:10,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:03:10,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 117 [2021-03-25 05:03:10,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:10,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 117 [2021-03-25 05:03:10,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:10,424 INFO L129 PetriNetUnfolder]: 59/168 cut-off events. [2021-03-25 05:03:10,424 INFO L130 PetriNetUnfolder]: For 794/959 co-relation queries the response was YES. [2021-03-25 05:03:10,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 168 events. 59/168 cut-off events. For 794/959 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 740 event pairs, 0 based on Foata normal form. 14/178 useless extension candidates. Maximal degree in co-relation 822. Up to 62 conditions per place. [2021-03-25 05:03:10,426 INFO L132 encePairwiseOnDemand]: 108/117 looper letters, 19 selfloop transitions, 16 changer transitions 11/55 dead transitions. [2021-03-25 05:03:10,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 589 flow [2021-03-25 05:03:10,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:03:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:03:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-25 05:03:10,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.73992673992674 [2021-03-25 05:03:10,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-25 05:03:10,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-25 05:03:10,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:10,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-25 05:03:10,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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 05:03:10,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,432 INFO L185 Difference]: Start difference. First operand has 45 places, 32 transitions, 269 flow. Second operand 7 states and 606 transitions. [2021-03-25 05:03:10,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 589 flow [2021-03-25 05:03:10,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 557 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-25 05:03:10,436 INFO L241 Difference]: Finished difference. Result has 53 places, 39 transitions, 416 flow [2021-03-25 05:03:10,437 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2021-03-25 05:03:10,437 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-25 05:03:10,437 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:10,437 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 39 transitions, 416 flow [2021-03-25 05:03:10,437 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 39 transitions, 416 flow [2021-03-25 05:03:10,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 39 transitions, 416 flow [2021-03-25 05:03:10,450 INFO L129 PetriNetUnfolder]: 46/135 cut-off events. [2021-03-25 05:03:10,450 INFO L130 PetriNetUnfolder]: For 594/678 co-relation queries the response was YES. [2021-03-25 05:03:10,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 135 events. 46/135 cut-off events. For 594/678 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 560 event pairs, 2 based on Foata normal form. 5/135 useless extension candidates. Maximal degree in co-relation 634. Up to 49 conditions per place. [2021-03-25 05:03:10,453 INFO L142 LiptonReduction]: Number of co-enabled transitions 216 [2021-03-25 05:03:10,456 INFO L154 LiptonReduction]: Checked pairs total: 143 [2021-03-25 05:03:10,457 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:03:10,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-25 05:03:10,457 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 416 flow [2021-03-25 05:03:10,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,458 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:10,458 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:10,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:03:10,458 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:10,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:10,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1148407714, now seen corresponding path program 1 times [2021-03-25 05:03:10,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:10,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760542790] [2021-03-25 05:03:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:10,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,519 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:10,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:10,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,532 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 05:03:10,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760542790] [2021-03-25 05:03:10,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:10,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:03:10,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805222768] [2021-03-25 05:03:10,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:03:10,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:10,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:03:10,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:03:10,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 117 [2021-03-25 05:03:10,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:10,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 117 [2021-03-25 05:03:10,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:10,594 INFO L129 PetriNetUnfolder]: 50/146 cut-off events. [2021-03-25 05:03:10,595 INFO L130 PetriNetUnfolder]: For 920/1090 co-relation queries the response was YES. [2021-03-25 05:03:10,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 146 events. 50/146 cut-off events. For 920/1090 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 592 event pairs, 0 based on Foata normal form. 20/166 useless extension candidates. Maximal degree in co-relation 817. Up to 58 conditions per place. [2021-03-25 05:03:10,596 INFO L132 encePairwiseOnDemand]: 108/117 looper letters, 17 selfloop transitions, 28 changer transitions 8/62 dead transitions. [2021-03-25 05:03:10,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 803 flow [2021-03-25 05:03:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:03:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:03:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-25 05:03:10,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.73992673992674 [2021-03-25 05:03:10,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-25 05:03:10,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-25 05:03:10,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:10,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-25 05:03:10,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 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 05:03:10,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:10,603 INFO L185 Difference]: Start difference. First operand has 50 places, 39 transitions, 416 flow. Second operand 7 states and 606 transitions. [2021-03-25 05:03:10,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 803 flow [2021-03-25 05:03:10,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 765 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-03-25 05:03:10,609 INFO L241 Difference]: Finished difference. Result has 57 places, 50 transitions, 667 flow [2021-03-25 05:03:10,609 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2021-03-25 05:03:10,609 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-25 05:03:10,609 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:10,609 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 50 transitions, 667 flow [2021-03-25 05:03:10,610 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 50 transitions, 667 flow [2021-03-25 05:03:10,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 667 flow [2021-03-25 05:03:10,623 INFO L129 PetriNetUnfolder]: 43/124 cut-off events. [2021-03-25 05:03:10,623 INFO L130 PetriNetUnfolder]: For 913/971 co-relation queries the response was YES. [2021-03-25 05:03:10,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 124 events. 43/124 cut-off events. For 913/971 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 501 event pairs, 3 based on Foata normal form. 4/127 useless extension candidates. Maximal degree in co-relation 702. Up to 48 conditions per place. [2021-03-25 05:03:10,625 INFO L142 LiptonReduction]: Number of co-enabled transitions 244 [2021-03-25 05:03:10,630 INFO L154 LiptonReduction]: Checked pairs total: 253 [2021-03-25 05:03:10,630 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:03:10,630 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-25 05:03:10,633 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 667 flow [2021-03-25 05:03:10,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:03:10,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:10,633 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:10,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:03:10,633 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash -146135242, now seen corresponding path program 1 times [2021-03-25 05:03:10,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:10,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793751489] [2021-03-25 05:03:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:10,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:10,688 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 05:03:10,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793751489] [2021-03-25 05:03:10,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:10,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:03:10,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275220610] [2021-03-25 05:03:10,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:03:10,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:10,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:03:10,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:03:10,690 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-03-25 05:03:10,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 667 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 05:03:10,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:10,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-03-25 05:03:10,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:10,762 INFO L129 PetriNetUnfolder]: 133/328 cut-off events. [2021-03-25 05:03:10,762 INFO L130 PetriNetUnfolder]: For 1652/1821 co-relation queries the response was YES. [2021-03-25 05:03:10,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 328 events. 133/328 cut-off events. For 1652/1821 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1873 event pairs, 31 based on Foata normal form. 39/355 useless extension candidates. Maximal degree in co-relation 1290. Up to 161 conditions per place. [2021-03-25 05:03:10,766 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 8 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2021-03-25 05:03:10,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 719 flow [2021-03-25 05:03:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:03:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:03:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-25 05:03:10,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7658119658119659 [2021-03-25 05:03:10,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-25 05:03:10,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-25 05:03:10,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:10,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-25 05:03:10,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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 05:03:10,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 05:03:10,772 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 05:03:10,772 INFO L185 Difference]: Start difference. First operand has 54 places, 50 transitions, 667 flow. Second operand 5 states and 448 transitions. [2021-03-25 05:03:10,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 719 flow [2021-03-25 05:03:10,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 709 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-03-25 05:03:10,779 INFO L241 Difference]: Finished difference. Result has 57 places, 57 transitions, 717 flow [2021-03-25 05:03:10,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=717, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2021-03-25 05:03:10,779 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-25 05:03:10,779 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:10,779 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 57 transitions, 717 flow [2021-03-25 05:03:10,779 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 57 transitions, 717 flow [2021-03-25 05:03:10,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions, 717 flow [2021-03-25 05:03:10,806 INFO L129 PetriNetUnfolder]: 135/330 cut-off events. [2021-03-25 05:03:10,807 INFO L130 PetriNetUnfolder]: For 1494/1606 co-relation queries the response was YES. [2021-03-25 05:03:10,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 330 events. 135/330 cut-off events. For 1494/1606 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1946 event pairs, 33 based on Foata normal form. 18/332 useless extension candidates. Maximal degree in co-relation 1404. Up to 186 conditions per place. [2021-03-25 05:03:10,811 INFO L142 LiptonReduction]: Number of co-enabled transitions 394 [2021-03-25 05:03:10,822 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-25 05:03:10,823 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:03:10,823 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 44 [2021-03-25 05:03:10,825 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 711 flow [2021-03-25 05:03:10,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 05:03:10,825 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:10,825 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:10,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:03:10,825 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:10,826 INFO L82 PathProgramCache]: Analyzing trace with hash 776668435, now seen corresponding path program 1 times [2021-03-25 05:03:10,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:10,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512808649] [2021-03-25 05:03:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:10,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:10,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:10,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:10,875 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 05:03:10,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512808649] [2021-03-25 05:03:10,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:10,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:03:10,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128554757] [2021-03-25 05:03:10,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:03:10,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:10,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:03:10,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:03:10,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-03-25 05:03:10,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 05:03:10,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:10,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-03-25 05:03:10,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:10,940 INFO L129 PetriNetUnfolder]: 83/227 cut-off events. [2021-03-25 05:03:10,940 INFO L130 PetriNetUnfolder]: For 1411/1633 co-relation queries the response was YES. [2021-03-25 05:03:10,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 227 events. 83/227 cut-off events. For 1411/1633 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1160 event pairs, 3 based on Foata normal form. 57/280 useless extension candidates. Maximal degree in co-relation 1143. Up to 129 conditions per place. [2021-03-25 05:03:10,942 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 11 changer transitions 3/63 dead transitions. [2021-03-25 05:03:10,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 789 flow [2021-03-25 05:03:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:03:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:03:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2021-03-25 05:03:10,945 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7649572649572649 [2021-03-25 05:03:10,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2021-03-25 05:03:10,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2021-03-25 05:03:10,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:10,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2021-03-25 05:03:10,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 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 05:03:10,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 05:03:10,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 05:03:10,948 INFO L185 Difference]: Start difference. First operand has 57 places, 56 transitions, 711 flow. Second operand 6 states and 537 transitions. [2021-03-25 05:03:10,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 789 flow [2021-03-25 05:03:10,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 781 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 05:03:10,957 INFO L241 Difference]: Finished difference. Result has 61 places, 60 transitions, 773 flow [2021-03-25 05:03:10,957 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=773, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2021-03-25 05:03:10,958 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2021-03-25 05:03:10,958 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:10,958 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 60 transitions, 773 flow [2021-03-25 05:03:10,958 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 60 transitions, 773 flow [2021-03-25 05:03:10,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 60 transitions, 773 flow [2021-03-25 05:03:10,982 INFO L129 PetriNetUnfolder]: 81/228 cut-off events. [2021-03-25 05:03:10,982 INFO L130 PetriNetUnfolder]: For 1266/1343 co-relation queries the response was YES. [2021-03-25 05:03:10,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 228 events. 81/228 cut-off events. For 1266/1343 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1231 event pairs, 4 based on Foata normal form. 5/233 useless extension candidates. Maximal degree in co-relation 1194. Up to 130 conditions per place. [2021-03-25 05:03:10,986 INFO L142 LiptonReduction]: Number of co-enabled transitions 306 [2021-03-25 05:03:10,997 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-25 05:03:10,997 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:03:10,997 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 39 [2021-03-25 05:03:10,999 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 765 flow [2021-03-25 05:03:11,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 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 05:03:11,000 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:11,000 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:11,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:03:11,000 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1139411128, now seen corresponding path program 1 times [2021-03-25 05:03:11,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:11,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504443743] [2021-03-25 05:03:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:11,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:11,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,061 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:11,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:11,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,081 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 05:03:11,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504443743] [2021-03-25 05:03:11,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:11,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:03:11,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452304920] [2021-03-25 05:03:11,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:03:11,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:11,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:03:11,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:03:11,083 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 117 [2021-03-25 05:03:11,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 765 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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 05:03:11,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:11,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 117 [2021-03-25 05:03:11,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:11,154 INFO L129 PetriNetUnfolder]: 100/274 cut-off events. [2021-03-25 05:03:11,154 INFO L130 PetriNetUnfolder]: For 1856/2064 co-relation queries the response was YES. [2021-03-25 05:03:11,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1649 conditions, 274 events. 100/274 cut-off events. For 1856/2064 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1422 event pairs, 6 based on Foata normal form. 29/298 useless extension candidates. Maximal degree in co-relation 1612. Up to 140 conditions per place. [2021-03-25 05:03:11,157 INFO L132 encePairwiseOnDemand]: 108/117 looper letters, 17 selfloop transitions, 24 changer transitions 24/80 dead transitions. [2021-03-25 05:03:11,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 1176 flow [2021-03-25 05:03:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:03:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:03:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2021-03-25 05:03:11,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7387057387057387 [2021-03-25 05:03:11,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2021-03-25 05:03:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2021-03-25 05:03:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2021-03-25 05:03:11,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 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 05:03:11,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:11,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 05:03:11,164 INFO L185 Difference]: Start difference. First operand has 61 places, 59 transitions, 765 flow. Second operand 7 states and 605 transitions. [2021-03-25 05:03:11,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 1176 flow [2021-03-25 05:03:11,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 1132 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-03-25 05:03:11,173 INFO L241 Difference]: Finished difference. Result has 64 places, 53 transitions, 720 flow [2021-03-25 05:03:11,173 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2021-03-25 05:03:11,174 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-25 05:03:11,174 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:11,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 53 transitions, 720 flow [2021-03-25 05:03:11,174 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 53 transitions, 720 flow [2021-03-25 05:03:11,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 720 flow [2021-03-25 05:03:11,190 INFO L129 PetriNetUnfolder]: 60/171 cut-off events. [2021-03-25 05:03:11,190 INFO L130 PetriNetUnfolder]: For 1072/1159 co-relation queries the response was YES. [2021-03-25 05:03:11,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 171 events. 60/171 cut-off events. For 1072/1159 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 750 event pairs, 5 based on Foata normal form. 2/171 useless extension candidates. Maximal degree in co-relation 897. Up to 54 conditions per place. [2021-03-25 05:03:11,192 INFO L142 LiptonReduction]: Number of co-enabled transitions 212 [2021-03-25 05:03:11,197 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:03:11,197 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:03:11,197 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-03-25 05:03:11,198 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 720 flow [2021-03-25 05:03:11,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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 05:03:11,198 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:11,198 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:11,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:03:11,198 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash 770730608, now seen corresponding path program 2 times [2021-03-25 05:03:11,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:11,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466311501] [2021-03-25 05:03:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:11,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,249 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:03:11,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:03:11,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,265 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 05:03:11,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466311501] [2021-03-25 05:03:11,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:11,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:03:11,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943579442] [2021-03-25 05:03:11,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:03:11,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:11,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:03:11,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:03:11,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 117 [2021-03-25 05:03:11,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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 05:03:11,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:11,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 117 [2021-03-25 05:03:11,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:11,331 INFO L129 PetriNetUnfolder]: 73/208 cut-off events. [2021-03-25 05:03:11,331 INFO L130 PetriNetUnfolder]: For 1434/1659 co-relation queries the response was YES. [2021-03-25 05:03:11,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 208 events. 73/208 cut-off events. For 1434/1659 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 995 event pairs, 4 based on Foata normal form. 18/222 useless extension candidates. Maximal degree in co-relation 1203. Up to 72 conditions per place. [2021-03-25 05:03:11,333 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 16 selfloop transitions, 9 changer transitions 30/69 dead transitions. [2021-03-25 05:03:11,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 1041 flow [2021-03-25 05:03:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:03:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:03:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions. [2021-03-25 05:03:11,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7364672364672364 [2021-03-25 05:03:11,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 517 transitions. [2021-03-25 05:03:11,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 517 transitions. [2021-03-25 05:03:11,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:11,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 517 transitions. [2021-03-25 05:03:11,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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 05:03:11,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 05:03:11,339 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 05:03:11,339 INFO L185 Difference]: Start difference. First operand has 61 places, 53 transitions, 720 flow. Second operand 6 states and 517 transitions. [2021-03-25 05:03:11,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 1041 flow [2021-03-25 05:03:11,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 971 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-25 05:03:11,344 INFO L241 Difference]: Finished difference. Result has 63 places, 36 transitions, 418 flow [2021-03-25 05:03:11,345 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=63, PETRI_TRANSITIONS=36} [2021-03-25 05:03:11,345 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-25 05:03:11,345 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:11,345 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 36 transitions, 418 flow [2021-03-25 05:03:11,345 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 36 transitions, 418 flow [2021-03-25 05:03:11,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 36 transitions, 418 flow [2021-03-25 05:03:11,353 INFO L129 PetriNetUnfolder]: 20/75 cut-off events. [2021-03-25 05:03:11,353 INFO L130 PetriNetUnfolder]: For 479/535 co-relation queries the response was YES. [2021-03-25 05:03:11,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 75 events. 20/75 cut-off events. For 479/535 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 263 event pairs, 2 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 388. Up to 23 conditions per place. [2021-03-25 05:03:11,354 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-25 05:03:11,493 INFO L154 LiptonReduction]: Checked pairs total: 11 [2021-03-25 05:03:11,494 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:03:11,494 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 149 [2021-03-25 05:03:11,494 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 34 transitions, 414 flow [2021-03-25 05:03:11,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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 05:03:11,495 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:03:11,495 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:03:11,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:03:11,495 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:03:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:03:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2117125607, now seen corresponding path program 1 times [2021-03-25 05:03:11,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:03:11,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184295165] [2021-03-25 05:03:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:03:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:03:11,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:03:11,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:03:11,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:03:11,538 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 05:03:11,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184295165] [2021-03-25 05:03:11,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:03:11,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:03:11,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388919440] [2021-03-25 05:03:11,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:03:11,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:03:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:03:11,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:03:11,540 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 119 [2021-03-25 05:03:11,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 34 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 05:03:11,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:03:11,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 119 [2021-03-25 05:03:11,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:03:11,578 INFO L129 PetriNetUnfolder]: 17/58 cut-off events. [2021-03-25 05:03:11,579 INFO L130 PetriNetUnfolder]: For 621/716 co-relation queries the response was YES. [2021-03-25 05:03:11,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 58 events. 17/58 cut-off events. For 621/716 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 157 event pairs, 0 based on Foata normal form. 25/81 useless extension candidates. Maximal degree in co-relation 339. Up to 17 conditions per place. [2021-03-25 05:03:11,580 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2021-03-25 05:03:11,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 33 transitions, 408 flow [2021-03-25 05:03:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:03:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:03:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2021-03-25 05:03:11,581 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7394957983193278 [2021-03-25 05:03:11,581 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2021-03-25 05:03:11,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2021-03-25 05:03:11,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:03:11,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2021-03-25 05:03:11,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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 05:03:11,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 05:03:11,584 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 05:03:11,584 INFO L185 Difference]: Start difference. First operand has 60 places, 34 transitions, 414 flow. Second operand 5 states and 440 transitions. [2021-03-25 05:03:11,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 33 transitions, 408 flow [2021-03-25 05:03:11,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 33 transitions, 340 flow, removed 8 selfloop flow, removed 12 redundant places. [2021-03-25 05:03:11,587 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-03-25 05:03:11,588 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-03-25 05:03:11,588 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-25 05:03:11,588 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:03:11,588 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 0 transitions, 0 flow [2021-03-25 05:03:11,588 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 0 transitions, 0 flow [2021-03-25 05:03:11,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:03:11,589 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:03:11,589 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:03:11,589 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 05:03:11,589 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:03:11,589 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:03:11,589 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:03:11,590 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:03:11,590 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:03:11,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 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 05:03:11,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:03:11,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:03:11 BasicIcfg [2021-03-25 05:03:11,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:03:11,595 INFO L168 Benchmark]: Toolchain (without parser) took 5661.29 ms. Allocated memory was 255.9 MB in the beginning and 411.0 MB in the end (delta: 155.2 MB). Free memory was 234.6 MB in the beginning and 385.7 MB in the end (delta: -151.1 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:03:11,595 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:03:11,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.11 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.6 MB in the beginning and 303.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:03:11,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.49 ms. Allocated memory is still 341.8 MB. Free memory was 303.9 MB in the beginning and 301.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:03:11,596 INFO L168 Benchmark]: Boogie Preprocessor took 31.42 ms. Allocated memory is still 341.8 MB. Free memory was 301.8 MB in the beginning and 300.8 MB in the end (delta: 972.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:03:11,596 INFO L168 Benchmark]: RCFGBuilder took 504.26 ms. Allocated memory is still 341.8 MB. Free memory was 300.8 MB in the beginning and 278.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:03:11,598 INFO L168 Benchmark]: TraceAbstraction took 4561.73 ms. Allocated memory was 341.8 MB in the beginning and 411.0 MB in the end (delta: 69.2 MB). Free memory was 278.2 MB in the beginning and 385.7 MB in the end (delta: -107.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:03:11,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 503.11 ms. Allocated memory was 255.9 MB in the beginning and 341.8 MB in the end (delta: 86.0 MB). Free memory was 234.6 MB in the beginning and 303.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.49 ms. Allocated memory is still 341.8 MB. Free memory was 303.9 MB in the beginning and 301.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.42 ms. Allocated memory is still 341.8 MB. Free memory was 301.8 MB in the beginning and 300.8 MB in the end (delta: 972.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 504.26 ms. Allocated memory is still 341.8 MB. Free memory was 300.8 MB in the beginning and 278.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4561.73 ms. Allocated memory was 341.8 MB in the beginning and 411.0 MB in the end (delta: 69.2 MB). Free memory was 278.2 MB in the beginning and 385.7 MB in the end (delta: -107.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1369.8ms, 68 PlacesBefore, 31 PlacesAfterwards, 59 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 666, positive: 627, positive conditional: 0, positive unconditional: 627, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 451, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 451, positive: 430, positive conditional: 0, positive unconditional: 430, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 666, positive: 197, positive conditional: 0, positive unconditional: 197, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 451, unknown conditional: 0, unknown unconditional: 451] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 777.2ms, 36 PlacesBefore, 31 PlacesAfterwards, 27 TransitionsBefore, 24 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.5ms, 41 PlacesBefore, 38 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 15 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.3ms, 48 PlacesBefore, 45 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 70 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 32, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.3ms, 53 PlacesBefore, 50 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 143 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 7, negative conditional: 0, negative unconditional: 7, 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: 37, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.5ms, 57 PlacesBefore, 54 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 244 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 253 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 14, negative conditional: 0, negative unconditional: 14, 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: 73, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.1ms, 57 PlacesBefore, 57 PlacesAfterwards, 57 TransitionsBefore, 56 TransitionsAfterwards, 394 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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): 40, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.9ms, 61 PlacesBefore, 61 PlacesAfterwards, 60 TransitionsBefore, 59 TransitionsAfterwards, 306 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.1ms, 64 PlacesBefore, 61 PlacesAfterwards, 53 TransitionsBefore, 53 TransitionsAfterwards, 212 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): 40, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 148.4ms, 63 PlacesBefore, 60 PlacesAfterwards, 36 TransitionsBefore, 34 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 11 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 51 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): 32, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4454.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 909.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1458.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 103 SDslu, 140 SDs, 0 SdLazy, 225 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 186.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 245.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=773occurred in iteration=7, InterpolantAutomatonStates: 62, 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: 20.7ms SsaConstructionTime, 182.0ms SatisfiabilityAnalysisTime, 544.9ms InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...