/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 06:58:48,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 06:58:48,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 06:58:48,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 06:58:48,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 06:58:48,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 06:58:48,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 06:58:48,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 06:58:48,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 06:58:48,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 06:58:48,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 06:58:48,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 06:58:48,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 06:58:48,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 06:58:48,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 06:58:48,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 06:58:48,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 06:58:48,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 06:58:48,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 06:58:48,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 06:58:48,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 06:58:48,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 06:58:48,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 06:58:48,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 06:58:48,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 06:58:48,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 06:58:48,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 06:58:48,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 06:58:48,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 06:58:48,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 06:58:48,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 06:58:48,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 06:58:48,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 06:58:48,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 06:58:48,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 06:58:48,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 06:58:48,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 06:58:48,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 06:58:48,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 06:58:48,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 06:58:48,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 06:58:48,564 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-RepeatedSemanticLbe.epf [2021-06-11 06:58:48,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 06:58:48,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 06:58:48,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 06:58:48,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 06:58:48,585 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 06:58:48,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 06:58:48,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 06:58:48,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 06:58:48,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 06:58:48,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 06:58:48,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 06:58:48,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 06:58:48,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 06:58:48,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 06:58:48,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 06:58:48,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 06:58:48,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 06:58:48,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 06:58:48,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 06:58:48,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 06:58:48,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 06:58:48,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 06:58:48,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 06:58:48,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 06:58:48,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 06:58:48,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 06:58:48,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 06:58:48,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 06:58:48,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 06:58:48,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 06:58:48,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 06:58:48,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 06:58:48,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 06:58:48,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 06:58:48,906 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 06:58:48,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2021-06-11 06:58:48,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/121adfc1c/75e62a92809a42b884e73a6d7387b149/FLAGa620a0174 [2021-06-11 06:58:49,437 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 06:58:49,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.oepc.i [2021-06-11 06:58:49,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/121adfc1c/75e62a92809a42b884e73a6d7387b149/FLAGa620a0174 [2021-06-11 06:58:49,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/121adfc1c/75e62a92809a42b884e73a6d7387b149 [2021-06-11 06:58:49,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 06:58:49,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 06:58:49,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 06:58:49,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 06:58:49,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 06:58:49,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 06:58:49" (1/1) ... [2021-06-11 06:58:49,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15594f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:49, skipping insertion in model container [2021-06-11 06:58:49,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 06:58:49" (1/1) ... [2021-06-11 06:58:49,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 06:58:50,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 06:58:50,169 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/safe029_tso.oepc.i[950,963] [2021-06-11 06:58:50,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 06:58:50,373 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 06:58:50,387 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/safe029_tso.oepc.i[950,963] [2021-06-11 06:58:50,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 06:58:50,493 INFO L208 MainTranslator]: Completed translation [2021-06-11 06:58:50,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50 WrapperNode [2021-06-11 06:58:50,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 06:58:50,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 06:58:50,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 06:58:50,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 06:58:50,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 06:58:50,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 06:58:50,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 06:58:50,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 06:58:50,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... [2021-06-11 06:58:50,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 06:58:50,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 06:58:50,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 06:58:50,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 06:58:50,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 06:58:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 06:58:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-11 06:58:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 06:58:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 06:58:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-11 06:58:50,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-11 06:58:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-11 06:58:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-11 06:58:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-11 06:58:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-11 06:58:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 06:58:50,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 06:58:50,664 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 06:58:51,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 06:58:51,068 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-11 06:58:51,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:58:51 BoogieIcfgContainer [2021-06-11 06:58:51,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 06:58:51,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 06:58:51,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 06:58:51,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 06:58:51,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 06:58:49" (1/3) ... [2021-06-11 06:58:51,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7292a452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:58:51, skipping insertion in model container [2021-06-11 06:58:51,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:58:50" (2/3) ... [2021-06-11 06:58:51,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7292a452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:58:51, skipping insertion in model container [2021-06-11 06:58:51,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:58:51" (3/3) ... [2021-06-11 06:58:51,079 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2021-06-11 06:58:51,085 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 06:58:51,089 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 06:58:51,090 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 06:58:51,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,122 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,122 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,122 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,122 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,123 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,124 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,129 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,129 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,130 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,135 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,135 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,135 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,136 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 06:58:51,137 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 06:58:51,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 06:58:51,184 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 06:58:51,184 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 06:58:51,185 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 06:58:51,185 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 06:58:51,185 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 06:58:51,185 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 06:58:51,185 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 06:58:51,185 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 06:58:51,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 128 flow [2021-06-11 06:58:51,231 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-06-11 06:58:51,231 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:51,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-11 06:58:51,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 128 flow [2021-06-11 06:58:51,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 100 flow [2021-06-11 06:58:51,242 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:51,263 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 47 transitions, 100 flow [2021-06-11 06:58:51,267 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 47 transitions, 100 flow [2021-06-11 06:58:51,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 100 flow [2021-06-11 06:58:51,282 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-06-11 06:58:51,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:51,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-06-11 06:58:51,285 INFO L151 LiptonReduction]: Number of co-enabled transitions 456 [2021-06-11 06:58:51,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:51,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:58:51,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:58:51,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:51,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:51,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:58:51,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:58:51,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:51,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,314 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-06-11 06:58:52,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:58:52,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:52,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 06:58:52,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 06:58:52,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:52,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:58:52,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:58:52,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,726 INFO L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-06-11 06:58:52,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:52,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:52,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:52,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:58:52,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 06:58:53,139 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-11 06:58:53,349 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-11 06:58:53,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:53,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:53,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 06:58:53,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 06:58:53,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:53,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:53,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 06:58:53,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-11 06:58:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 06:58:53,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 06:58:53,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 06:58:53,439 INFO L163 LiptonReduction]: Checked pairs total: 898 [2021-06-11 06:58:53,440 INFO L165 LiptonReduction]: Total number of compositions: 38 [2021-06-11 06:58:53,442 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2201 [2021-06-11 06:58:53,449 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-11 06:58:53,449 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:53,449 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:58:53,450 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-11 06:58:53,450 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:58:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:58:53,454 INFO L82 PathProgramCache]: Analyzing trace with hash 198302032, now seen corresponding path program 1 times [2021-06-11 06:58:53,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:58:53,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325209064] [2021-06-11 06:58:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:58:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:58:53,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 06:58:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:58:53,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325209064] [2021-06-11 06:58:53,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:58:53,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 06:58:53,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588359465] [2021-06-11 06:58:53,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-11 06:58:53,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:58:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-11 06:58:53,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-11 06:58:53,629 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 97 [2021-06-11 06:58:53,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:58:53,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 97 [2021-06-11 06:58:53,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:58:53,640 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 06:58:53,640 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:53,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 06:58:53,642 INFO L132 encePairwiseOnDemand]: 96/97 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-06-11 06:58:53,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-06-11 06:58:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-11 06:58:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-11 06:58:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2021-06-11 06:58:53,652 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9329896907216495 [2021-06-11 06:58:53,653 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 181 transitions. [2021-06-11 06:58:53,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 181 transitions. [2021-06-11 06:58:53,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:58:53,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 181 transitions. [2021-06-11 06:58:53,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,670 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,672 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 181 transitions. [2021-06-11 06:58:53,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-06-11 06:58:53,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 06:58:53,675 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-06-11 06:58:53,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-06-11 06:58:53,677 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-11 06:58:53,677 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:53,677 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 06:58:53,678 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 06:58:53,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 12 transitions, 28 flow [2021-06-11 06:58:53,680 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 06:58:53,681 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:53,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 06:58:53,681 INFO L151 LiptonReduction]: Number of co-enabled transitions 54 [2021-06-11 06:58:53,687 INFO L163 LiptonReduction]: Checked pairs total: 60 [2021-06-11 06:58:53,688 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:58:53,688 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 06:58:53,689 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2021-06-11 06:58:53,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,689 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:58:53,689 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 06:58:53,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 06:58:53,690 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:58:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:58:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1852395464, now seen corresponding path program 1 times [2021-06-11 06:58:53,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:58:53,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146855126] [2021-06-11 06:58:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:58:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:58:53,791 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-11 06:58:53,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 06:58:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:58:53,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146855126] [2021-06-11 06:58:53,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:58:53,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 06:58:53,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928945951] [2021-06-11 06:58:53,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 06:58:53,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:58:53,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 06:58:53,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 06:58:53,803 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-06-11 06:58:53,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:58:53,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-06-11 06:58:53,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:58:53,825 INFO L129 PetriNetUnfolder]: 11/46 cut-off events. [2021-06-11 06:58:53,826 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:53,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 46 events. 11/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs, 3 based on Foata normal form. 5/50 useless extension candidates. Maximal degree in co-relation 77. Up to 17 conditions per place. [2021-06-11 06:58:53,829 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 5 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2021-06-11 06:58:53,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 16 transitions, 56 flow [2021-06-11 06:58:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 06:58:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 06:58:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-11 06:58:53,833 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7800687285223368 [2021-06-11 06:58:53,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-11 06:58:53,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-11 06:58:53,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:58:53,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-11 06:58:53,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,838 INFO L185 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 3 states and 227 transitions. [2021-06-11 06:58:53,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 16 transitions, 56 flow [2021-06-11 06:58:53,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 06:58:53,839 INFO L241 Difference]: Finished difference. Result has 21 places, 16 transitions, 66 flow [2021-06-11 06:58:53,839 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2021-06-11 06:58:53,840 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2021-06-11 06:58:53,840 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:53,840 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 16 transitions, 66 flow [2021-06-11 06:58:53,840 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 16 transitions, 66 flow [2021-06-11 06:58:53,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 16 transitions, 66 flow [2021-06-11 06:58:53,846 INFO L129 PetriNetUnfolder]: 11/46 cut-off events. [2021-06-11 06:58:53,846 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-11 06:58:53,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 46 events. 11/46 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 152 event pairs, 3 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 95. Up to 17 conditions per place. [2021-06-11 06:58:53,847 INFO L151 LiptonReduction]: Number of co-enabled transitions 50 [2021-06-11 06:58:53,853 INFO L163 LiptonReduction]: Checked pairs total: 10 [2021-06-11 06:58:53,853 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:58:53,853 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-06-11 06:58:53,854 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 66 flow [2021-06-11 06:58:53,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,854 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:58:53,854 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:58:53,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 06:58:53,854 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:58:53,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:58:53,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1581169100, now seen corresponding path program 1 times [2021-06-11 06:58:53,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:58:53,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046171612] [2021-06-11 06:58:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:58:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:58:53,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-11 06:58:53,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 06:58:53,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:53,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 06:58:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:58:53,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046171612] [2021-06-11 06:58:53,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:58:53,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 06:58:53,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037782793] [2021-06-11 06:58:53,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:58:53,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:58:53,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:58:53,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:58:53,963 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 97 [2021-06-11 06:58:53,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:53,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:58:53,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 97 [2021-06-11 06:58:53,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:58:54,027 INFO L129 PetriNetUnfolder]: 54/113 cut-off events. [2021-06-11 06:58:54,027 INFO L130 PetriNetUnfolder]: For 54/62 co-relation queries the response was YES. [2021-06-11 06:58:54,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 113 events. 54/113 cut-off events. For 54/62 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 389 event pairs, 15 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 319. Up to 70 conditions per place. [2021-06-11 06:58:54,028 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 12 selfloop transitions, 8 changer transitions 0/23 dead transitions. [2021-06-11 06:58:54,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 132 flow [2021-06-11 06:58:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 06:58:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 06:58:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2021-06-11 06:58:54,036 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6804123711340206 [2021-06-11 06:58:54,036 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 264 transitions. [2021-06-11 06:58:54,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 264 transitions. [2021-06-11 06:58:54,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:58:54,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 264 transitions. [2021-06-11 06:58:54,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,039 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,039 INFO L185 Difference]: Start difference. First operand has 21 places, 16 transitions, 66 flow. Second operand 4 states and 264 transitions. [2021-06-11 06:58:54,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 132 flow [2021-06-11 06:58:54,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 23 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 06:58:54,041 INFO L241 Difference]: Finished difference. Result has 24 places, 19 transitions, 97 flow [2021-06-11 06:58:54,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2021-06-11 06:58:54,042 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2021-06-11 06:58:54,042 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:54,042 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 97 flow [2021-06-11 06:58:54,042 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 97 flow [2021-06-11 06:58:54,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 97 flow [2021-06-11 06:58:54,047 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-06-11 06:58:54,047 INFO L130 PetriNetUnfolder]: For 21/22 co-relation queries the response was YES. [2021-06-11 06:58:54,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 41 events. 9/41 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 120 event pairs, 1 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 95. Up to 16 conditions per place. [2021-06-11 06:58:54,048 INFO L151 LiptonReduction]: Number of co-enabled transitions 56 [2021-06-11 06:58:54,053 INFO L163 LiptonReduction]: Checked pairs total: 13 [2021-06-11 06:58:54,053 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:58:54,053 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 06:58:54,054 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 97 flow [2021-06-11 06:58:54,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,054 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:58:54,054 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:58:54,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 06:58:54,054 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:58:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:58:54,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1589684211, now seen corresponding path program 1 times [2021-06-11 06:58:54,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:58:54,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070196689] [2021-06-11 06:58:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:58:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:58:54,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:54,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-11 06:58:54,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:54,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-11 06:58:54,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 06:58:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:58:54,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070196689] [2021-06-11 06:58:54,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:58:54,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 06:58:54,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426192879] [2021-06-11 06:58:54,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 06:58:54,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:58:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 06:58:54,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-11 06:58:54,121 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 97 [2021-06-11 06:58:54,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:58:54,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 97 [2021-06-11 06:58:54,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:58:54,164 INFO L129 PetriNetUnfolder]: 55/123 cut-off events. [2021-06-11 06:58:54,164 INFO L130 PetriNetUnfolder]: For 100/102 co-relation queries the response was YES. [2021-06-11 06:58:54,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 123 events. 55/123 cut-off events. For 100/102 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 432 event pairs, 4 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 352. Up to 48 conditions per place. [2021-06-11 06:58:54,166 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 14 selfloop transitions, 10 changer transitions 0/27 dead transitions. [2021-06-11 06:58:54,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 166 flow [2021-06-11 06:58:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 06:58:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 06:58:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 328 transitions. [2021-06-11 06:58:54,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6762886597938145 [2021-06-11 06:58:54,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 328 transitions. [2021-06-11 06:58:54,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 328 transitions. [2021-06-11 06:58:54,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:58:54,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 328 transitions. [2021-06-11 06:58:54,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,171 INFO L185 Difference]: Start difference. First operand has 24 places, 19 transitions, 97 flow. Second operand 5 states and 328 transitions. [2021-06-11 06:58:54,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 166 flow [2021-06-11 06:58:54,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 06:58:54,178 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 130 flow [2021-06-11 06:58:54,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-06-11 06:58:54,179 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2021-06-11 06:58:54,179 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:54,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 20 transitions, 130 flow [2021-06-11 06:58:54,179 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 20 transitions, 130 flow [2021-06-11 06:58:54,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 20 transitions, 130 flow [2021-06-11 06:58:54,183 INFO L129 PetriNetUnfolder]: 5/38 cut-off events. [2021-06-11 06:58:54,183 INFO L130 PetriNetUnfolder]: For 43/44 co-relation queries the response was YES. [2021-06-11 06:58:54,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 38 events. 5/38 cut-off events. For 43/44 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 106. Up to 15 conditions per place. [2021-06-11 06:58:54,184 INFO L151 LiptonReduction]: Number of co-enabled transitions 58 [2021-06-11 06:58:54,185 INFO L163 LiptonReduction]: Checked pairs total: 14 [2021-06-11 06:58:54,186 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:58:54,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 06:58:54,186 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 130 flow [2021-06-11 06:58:54,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 61.8) internal successors, (309), 5 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:58:54,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:58:54,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 06:58:54,187 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:58:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:58:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1771592219, now seen corresponding path program 1 times [2021-06-11 06:58:54,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:58:54,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652960916] [2021-06-11 06:58:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:58:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:58:54,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:54,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:58:54,257 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-06-11 06:58:54,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 06:58:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:58:54,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652960916] [2021-06-11 06:58:54,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:58:54,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 06:58:54,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174213133] [2021-06-11 06:58:54,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 06:58:54,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:58:54,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 06:58:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 06:58:54,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 97 [2021-06-11 06:58:54,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:58:54,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 97 [2021-06-11 06:58:54,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:58:54,311 INFO L129 PetriNetUnfolder]: 11/57 cut-off events. [2021-06-11 06:58:54,312 INFO L130 PetriNetUnfolder]: For 64/73 co-relation queries the response was YES. [2021-06-11 06:58:54,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 57 events. 11/57 cut-off events. For 64/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 229 event pairs, 2 based on Foata normal form. 10/65 useless extension candidates. Maximal degree in co-relation 150. Up to 27 conditions per place. [2021-06-11 06:58:54,313 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 4 selfloop transitions, 3 changer transitions 9/27 dead transitions. [2021-06-11 06:58:54,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 168 flow [2021-06-11 06:58:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 06:58:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 06:58:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2021-06-11 06:58:54,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7608247422680412 [2021-06-11 06:58:54,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2021-06-11 06:58:54,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2021-06-11 06:58:54,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:58:54,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2021-06-11 06:58:54,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,319 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 130 flow. Second operand 5 states and 369 transitions. [2021-06-11 06:58:54,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 168 flow [2021-06-11 06:58:54,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 152 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-11 06:58:54,322 INFO L241 Difference]: Finished difference. Result has 34 places, 18 transitions, 119 flow [2021-06-11 06:58:54,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2021-06-11 06:58:54,323 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2021-06-11 06:58:54,323 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:54,323 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 18 transitions, 119 flow [2021-06-11 06:58:54,323 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 18 transitions, 119 flow [2021-06-11 06:58:54,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 18 transitions, 119 flow [2021-06-11 06:58:54,329 INFO L129 PetriNetUnfolder]: 6/36 cut-off events. [2021-06-11 06:58:54,329 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-06-11 06:58:54,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 36 events. 6/36 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 94 event pairs, 2 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 106. Up to 21 conditions per place. [2021-06-11 06:58:54,332 INFO L151 LiptonReduction]: Number of co-enabled transitions 28 [2021-06-11 06:58:54,332 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 06:58:54,333 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:58:54,333 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-06-11 06:58:54,338 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 18 transitions, 119 flow [2021-06-11 06:58:54,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,338 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 06:58:54,338 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 06:58:54,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 06:58:54,338 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 06:58:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 06:58:54,339 INFO L82 PathProgramCache]: Analyzing trace with hash 508369692, now seen corresponding path program 1 times [2021-06-11 06:58:54,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 06:58:54,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686047680] [2021-06-11 06:58:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 06:58:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 06:58:54,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 06:58:54,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 06:58:54,394 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-11 06:58:54,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-11 06:58:54,399 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 06:58:54,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 06:58:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 06:58:54,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686047680] [2021-06-11 06:58:54,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 06:58:54,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 06:58:54,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375627610] [2021-06-11 06:58:54,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 06:58:54,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 06:58:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 06:58:54,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 06:58:54,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 97 [2021-06-11 06:58:54,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 18 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 06:58:54,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 97 [2021-06-11 06:58:54,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 06:58:54,438 INFO L129 PetriNetUnfolder]: 4/30 cut-off events. [2021-06-11 06:58:54,438 INFO L130 PetriNetUnfolder]: For 43/57 co-relation queries the response was YES. [2021-06-11 06:58:54,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 30 events. 4/30 cut-off events. For 43/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 8/38 useless extension candidates. Maximal degree in co-relation 109. Up to 19 conditions per place. [2021-06-11 06:58:54,439 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-06-11 06:58:54,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 20 transitions, 141 flow [2021-06-11 06:58:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-11 06:58:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-11 06:58:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 436 transitions. [2021-06-11 06:58:54,442 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7491408934707904 [2021-06-11 06:58:54,442 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 436 transitions. [2021-06-11 06:58:54,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 436 transitions. [2021-06-11 06:58:54,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 06:58:54,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 436 transitions. [2021-06-11 06:58:54,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,446 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,446 INFO L185 Difference]: Start difference. First operand has 32 places, 18 transitions, 119 flow. Second operand 6 states and 436 transitions. [2021-06-11 06:58:54,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 20 transitions, 141 flow [2021-06-11 06:58:54,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 115 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-11 06:58:54,448 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-06-11 06:58:54,449 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-06-11 06:58:54,449 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2021-06-11 06:58:54,449 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 06:58:54,449 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 0 transitions, 0 flow [2021-06-11 06:58:54,449 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 0 transitions, 0 flow [2021-06-11 06:58:54,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 06:58:54,450 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 06:58:54,450 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 06:58:54,450 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. [2021-06-11 06:58:54,450 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 06:58:54,450 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 06:58:54,450 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 06:58:54,450 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 06:58:54,451 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 06:58:54,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 06:58:54,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 06:58:54,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 06:58:54 BasicIcfg [2021-06-11 06:58:54,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 06:58:54,457 INFO L168 Benchmark]: Toolchain (without parser) took 4506.31 ms. Allocated memory is still 360.7 MB. Free memory was 324.0 MB in the beginning and 286.0 MB in the end (delta: 38.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.0 GB. [2021-06-11 06:58:54,460 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 360.7 MB. Free memory was 342.1 MB in the beginning and 342.1 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 06:58:54,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.03 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 323.7 MB in the end (delta: 173.6 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-06-11 06:58:54,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.74 ms. Allocated memory is still 360.7 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 06:58:54,462 INFO L168 Benchmark]: Boogie Preprocessor took 31.42 ms. Allocated memory is still 360.7 MB. Free memory was 321.6 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 06:58:54,462 INFO L168 Benchmark]: RCFGBuilder took 484.61 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 297.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-11 06:58:54,463 INFO L168 Benchmark]: TraceAbstraction took 3382.43 ms. Allocated memory is still 360.7 MB. Free memory was 297.5 MB in the beginning and 286.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.0 GB. [2021-06-11 06:58:54,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 360.7 MB. Free memory was 342.1 MB in the beginning and 342.1 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 545.03 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 323.7 MB in the end (delta: 173.6 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.74 ms. Allocated memory is still 360.7 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.42 ms. Allocated memory is still 360.7 MB. Free memory was 321.6 MB in the beginning and 320.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 484.61 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 297.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3382.43 ms. Allocated memory is still 360.7 MB. Free memory was 297.5 MB in the beginning and 286.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2173.1ms, 53 PlacesBefore, 19 PlacesAfterwards, 47 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 38 TotalNumberOfCompositions, 898 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 555, positive: 494, positive conditional: 0, positive unconditional: 494, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 359, positive: 332, positive conditional: 0, positive unconditional: 332, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 359, positive: 332, positive conditional: 0, positive unconditional: 332, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 359, positive: 328, positive conditional: 0, positive unconditional: 328, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 555, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 359, unknown conditional: 0, unknown unconditional: 359] , Statistics on independence cache: Total cache size (in pairs): 617, Positive cache size: 590, Positive conditional cache size: 0, Positive unconditional cache size: 590, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.9ms, 18 PlacesBefore, 17 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 618, Positive cache size: 591, Positive conditional cache size: 0, Positive unconditional cache size: 591, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.7ms, 21 PlacesBefore, 21 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 10 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 619, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.8ms, 24 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 56 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 13 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: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 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] , Statistics on independence cache: Total cache size (in pairs): 619, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 29 PlacesBefore, 29 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 58 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 12, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 619, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6ms, 34 PlacesBefore, 32 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 28 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 619, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 31 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 619, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - 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 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3272.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 322.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2261.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 17 SDslu, 23 SDs, 0 SdLazy, 60 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 70.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=4, InterpolantAutomatonStates: 25, 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: 15.5ms SsaConstructionTime, 135.8ms SatisfiabilityAnalysisTime, 323.6ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...