/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:00:56,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:00:56,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:00:56,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:00:56,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:00:56,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:00:56,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:00:56,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:00:56,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:00:56,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:00:56,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:00:56,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:00:56,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:00:56,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:00:56,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:00:56,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:00:56,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:00:56,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:00:56,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:00:56,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:00:56,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:00:56,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:00:56,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:00:56,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:00:56,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:00:56,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:00:56,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:00:56,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:00:56,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:00:56,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:00:56,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:00:56,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:00:56,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:00:56,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:00:56,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:00:56,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:00:56,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:00:56,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:00:56,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:00:56,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:00:56,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:00:56,653 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:00:56,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:00:56,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:00:56,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:00:56,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:00:56,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:00:56,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:00:56,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:00:56,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:00:56,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:00:56,656 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:00:56,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:00:56,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:00:56,656 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:00:56,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:00:56,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:00:56,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:00:56,983 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:00:56,984 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:00:56,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-25 05:00:57,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45dab695/3bc61bcb4df54daa8aa9fd6085ce247b/FLAG7ff29a5fe [2021-03-25 05:00:57,520 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:00:57,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-25 05:00:57,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45dab695/3bc61bcb4df54daa8aa9fd6085ce247b/FLAG7ff29a5fe [2021-03-25 05:00:57,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45dab695/3bc61bcb4df54daa8aa9fd6085ce247b [2021-03-25 05:00:57,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:00:57,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:00:57,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:57,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:00:57,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:00:57,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:57" (1/1) ... [2021-03-25 05:00:57,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347fef6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:57, skipping insertion in model container [2021-03-25 05:00:57,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:00:57" (1/1) ... [2021-03-25 05:00:57,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:00:57,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:00:57,987 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/safe009_tso.oepc.i[950,963] [2021-03-25 05:00:58,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:58,158 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:00:58,166 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/safe009_tso.oepc.i[950,963] [2021-03-25 05:00:58,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:00:58,272 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:00:58,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58 WrapperNode [2021-03-25 05:00:58,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:00:58,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:58,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:00:58,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:00:58,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:00:58,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:00:58,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:00:58,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:00:58,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... [2021-03-25 05:00:58,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:00:58,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:00:58,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:00:58,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:00:58,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:00:58,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:00:58,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:00:58,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:00:58,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:00:58,412 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:00:58,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:00:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:00:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:00:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:00:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:00:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:00:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:00:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:00:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:00:58,415 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:00:58,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:00:58,790 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:00:58,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:58 BoogieIcfgContainer [2021-03-25 05:00:58,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:00:58,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:00:58,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:00:58,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:00:58,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:00:57" (1/3) ... [2021-03-25 05:00:58,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a37c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:58, skipping insertion in model container [2021-03-25 05:00:58,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:00:58" (2/3) ... [2021-03-25 05:00:58,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a37c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:00:58, skipping insertion in model container [2021-03-25 05:00:58,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:00:58" (3/3) ... [2021-03-25 05:00:58,799 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-03-25 05:00:58,826 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:00:58,830 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:00:58,830 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:00:58,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,872 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,872 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,877 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:00:58,881 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:00:58,897 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:00:58,926 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:00:58,926 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:00:58,926 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:00:58,927 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:00:58,927 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:00:58,927 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:00:58,927 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:00:58,927 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:00:58,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:00:58,984 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 05:00:58,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:58,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 05:00:58,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:00:59,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:59,003 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:00:59,010 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:59,013 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:59,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 05:00:59,042 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 05:00:59,042 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:00:59,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 05:00:59,045 INFO L142 LiptonReduction]: Number of co-enabled transitions 812 [2021-03-25 05:01:00,392 INFO L154 LiptonReduction]: Checked pairs total: 861 [2021-03-25 05:01:00,392 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 05:01:00,394 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1392 [2021-03-25 05:01:00,402 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:01:00,402 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:00,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:00,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:00,403 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1640288609, now seen corresponding path program 1 times [2021-03-25 05:01:00,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:00,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732436990] [2021-03-25 05:01:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:00,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:00,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:00,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:00,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:00,666 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:01:00,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:01:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:00,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732436990] [2021-03-25 05:01:00,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:00,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:01:00,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881140542] [2021-03-25 05:01:00,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:00,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:00,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:00,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:00,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 110 [2021-03-25 05:01:00,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:00,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:00,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 110 [2021-03-25 05:01:00,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:00,749 INFO L129 PetriNetUnfolder]: 14/63 cut-off events. [2021-03-25 05:01:00,749 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:00,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 63 events. 14/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 8 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 97. Up to 25 conditions per place. [2021-03-25 05:01:00,752 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 7 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2021-03-25 05:01:00,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 81 flow [2021-03-25 05:01:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2021-03-25 05:01:00,768 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8477272727272728 [2021-03-25 05:01:00,769 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2021-03-25 05:01:00,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2021-03-25 05:01:00,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:00,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2021-03-25 05:01:00,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:00,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:00,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:00,787 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 4 states and 373 transitions. [2021-03-25 05:01:00,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 81 flow [2021-03-25 05:01:00,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:01:00,791 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 76 flow [2021-03-25 05:01:00,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-25 05:01:00,793 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:01:00,793 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:00,793 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 76 flow [2021-03-25 05:01:00,794 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 76 flow [2021-03-25 05:01:00,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 23 transitions, 76 flow [2021-03-25 05:01:00,805 INFO L129 PetriNetUnfolder]: 4/43 cut-off events. [2021-03-25 05:01:00,805 INFO L130 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2021-03-25 05:01:00,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 43 events. 4/43 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 109 event pairs, 2 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 72. Up to 11 conditions per place. [2021-03-25 05:01:00,806 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 05:01:01,334 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:01:01,551 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 05:01:01,617 INFO L154 LiptonReduction]: Checked pairs total: 273 [2021-03-25 05:01:01,618 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:01:01,618 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 825 [2021-03-25 05:01:01,619 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 66 flow [2021-03-25 05:01:01,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,619 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:01,619 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:01,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:01:01,619 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:01,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:01,620 INFO L82 PathProgramCache]: Analyzing trace with hash -690661269, now seen corresponding path program 1 times [2021-03-25 05:01:01,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:01,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4202165] [2021-03-25 05:01:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:01,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:01,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:01,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4202165] [2021-03-25 05:01:01,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:01,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:01,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170735336] [2021-03-25 05:01:01,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:01:01,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:01,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:01:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:01:01,678 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 115 [2021-03-25 05:01:01,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:01,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 115 [2021-03-25 05:01:01,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:01,697 INFO L129 PetriNetUnfolder]: 5/38 cut-off events. [2021-03-25 05:01:01,697 INFO L130 PetriNetUnfolder]: For 30/35 co-relation queries the response was YES. [2021-03-25 05:01:01,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 38 events. 5/38 cut-off events. For 30/35 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 109 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 87. Up to 18 conditions per place. [2021-03-25 05:01:01,698 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 7 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2021-03-25 05:01:01,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 108 flow [2021-03-25 05:01:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:01:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:01:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-03-25 05:01:01,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8869565217391304 [2021-03-25 05:01:01,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-03-25 05:01:01,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-03-25 05:01:01,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:01,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-03-25 05:01:01,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,702 INFO L185 Difference]: Start difference. First operand has 29 places, 18 transitions, 66 flow. Second operand 3 states and 306 transitions. [2021-03-25 05:01:01,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 108 flow [2021-03-25 05:01:01,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:01:01,704 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 98 flow [2021-03-25 05:01:01,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2021-03-25 05:01:01,704 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-25 05:01:01,704 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:01,704 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 21 transitions, 98 flow [2021-03-25 05:01:01,705 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 21 transitions, 98 flow [2021-03-25 05:01:01,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 21 transitions, 98 flow [2021-03-25 05:01:01,709 INFO L129 PetriNetUnfolder]: 3/34 cut-off events. [2021-03-25 05:01:01,709 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2021-03-25 05:01:01,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 34 events. 3/34 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 95 event pairs, 0 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 76. Up to 13 conditions per place. [2021-03-25 05:01:01,709 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-25 05:01:01,711 INFO L154 LiptonReduction]: Checked pairs total: 136 [2021-03-25 05:01:01,711 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:01,711 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 05:01:01,712 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 98 flow [2021-03-25 05:01:01,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,712 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:01,712 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:01,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:01:01,713 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2138357994, now seen corresponding path program 1 times [2021-03-25 05:01:01,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:01,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865892761] [2021-03-25 05:01:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:01,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:01,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:01,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:01,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865892761] [2021-03-25 05:01:01,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:01,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:01,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64436771] [2021-03-25 05:01:01,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:01,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:01,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:01,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 115 [2021-03-25 05:01:01,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:01,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 115 [2021-03-25 05:01:01,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:01,809 INFO L129 PetriNetUnfolder]: 3/44 cut-off events. [2021-03-25 05:01:01,809 INFO L130 PetriNetUnfolder]: For 50/57 co-relation queries the response was YES. [2021-03-25 05:01:01,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 44 events. 3/44 cut-off events. For 50/57 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 157 event pairs, 0 based on Foata normal form. 4/47 useless extension candidates. Maximal degree in co-relation 114. Up to 15 conditions per place. [2021-03-25 05:01:01,810 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 5 selfloop transitions, 4 changer transitions 4/24 dead transitions. [2021-03-25 05:01:01,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 143 flow [2021-03-25 05:01:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 05:01:01,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.85 [2021-03-25 05:01:01,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 05:01:01,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 05:01:01,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:01,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 05:01:01,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,815 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 98 flow. Second operand 4 states and 391 transitions. [2021-03-25 05:01:01,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 143 flow [2021-03-25 05:01:01,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 137 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:01:01,816 INFO L241 Difference]: Finished difference. Result has 34 places, 19 transitions, 91 flow [2021-03-25 05:01:01,817 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2021-03-25 05:01:01,817 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:01:01,817 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:01,817 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 19 transitions, 91 flow [2021-03-25 05:01:01,817 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 19 transitions, 91 flow [2021-03-25 05:01:01,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 19 transitions, 91 flow [2021-03-25 05:01:01,821 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-03-25 05:01:01,821 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-03-25 05:01:01,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 30 events. 2/30 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 1 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 69. Up to 11 conditions per place. [2021-03-25 05:01:01,821 INFO L142 LiptonReduction]: Number of co-enabled transitions 96 [2021-03-25 05:01:01,823 INFO L154 LiptonReduction]: Checked pairs total: 92 [2021-03-25 05:01:01,823 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:01,823 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 05:01:01,823 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 91 flow [2021-03-25 05:01:01,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,824 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:01,824 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:01,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:01:01,824 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:01,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:01,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2137524714, now seen corresponding path program 2 times [2021-03-25 05:01:01,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:01,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745967157] [2021-03-25 05:01:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:01,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:01,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745967157] [2021-03-25 05:01:01,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:01,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:01:01,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533687240] [2021-03-25 05:01:01,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:01:01,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:01,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:01:01,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:01:01,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 115 [2021-03-25 05:01:01,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:01,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 115 [2021-03-25 05:01:01,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:01,888 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-03-25 05:01:01,888 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-03-25 05:01:01,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 30 events. 2/30 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 70 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 73. Up to 11 conditions per place. [2021-03-25 05:01:01,889 INFO L132 encePairwiseOnDemand]: 112/115 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2021-03-25 05:01:01,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 19 transitions, 97 flow [2021-03-25 05:01:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:01:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:01:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-25 05:01:01,891 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8898550724637682 [2021-03-25 05:01:01,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-25 05:01:01,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-25 05:01:01,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:01,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-25 05:01:01,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,893 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,893 INFO L185 Difference]: Start difference. First operand has 34 places, 19 transitions, 91 flow. Second operand 3 states and 307 transitions. [2021-03-25 05:01:01,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 19 transitions, 97 flow [2021-03-25 05:01:01,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 19 transitions, 83 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 05:01:01,895 INFO L241 Difference]: Finished difference. Result has 33 places, 19 transitions, 85 flow [2021-03-25 05:01:01,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2021-03-25 05:01:01,895 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-03-25 05:01:01,895 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:01,896 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 19 transitions, 85 flow [2021-03-25 05:01:01,896 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 19 transitions, 85 flow [2021-03-25 05:01:01,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 19 transitions, 85 flow [2021-03-25 05:01:01,899 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-03-25 05:01:01,900 INFO L130 PetriNetUnfolder]: For 23/24 co-relation queries the response was YES. [2021-03-25 05:01:01,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 30 events. 2/30 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 1 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 66. Up to 11 conditions per place. [2021-03-25 05:01:01,900 INFO L142 LiptonReduction]: Number of co-enabled transitions 94 [2021-03-25 05:01:01,901 INFO L154 LiptonReduction]: Checked pairs total: 81 [2021-03-25 05:01:01,901 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:01,902 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 05:01:01,902 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 85 flow [2021-03-25 05:01:01,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,902 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:01,903 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:01,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:01:01,903 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:01,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1753153210, now seen corresponding path program 1 times [2021-03-25 05:01:01,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:01,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989936216] [2021-03-25 05:01:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:01,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:01,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:01,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:01,979 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:01:01,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:01:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:01,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989936216] [2021-03-25 05:01:01,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:01,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:01:01,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226459499] [2021-03-25 05:01:01,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:01,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:01,988 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2021-03-25 05:01:01,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:01,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:01,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2021-03-25 05:01:01,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:02,004 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2021-03-25 05:01:02,004 INFO L130 PetriNetUnfolder]: For 50/56 co-relation queries the response was YES. [2021-03-25 05:01:02,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 41 events. 3/41 cut-off events. For 50/56 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 127 event pairs, 0 based on Foata normal form. 7/48 useless extension candidates. Maximal degree in co-relation 103. Up to 13 conditions per place. [2021-03-25 05:01:02,005 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 5 selfloop transitions, 6 changer transitions 1/22 dead transitions. [2021-03-25 05:01:02,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 124 flow [2021-03-25 05:01:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-25 05:01:02,006 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8239130434782609 [2021-03-25 05:01:02,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-25 05:01:02,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-25 05:01:02,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:02,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-25 05:01:02,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,009 INFO L185 Difference]: Start difference. First operand has 33 places, 19 transitions, 85 flow. Second operand 4 states and 379 transitions. [2021-03-25 05:01:02,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 124 flow [2021-03-25 05:01:02,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 116 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:01:02,011 INFO L241 Difference]: Finished difference. Result has 36 places, 20 transitions, 105 flow [2021-03-25 05:01:02,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2021-03-25 05:01:02,011 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:01:02,011 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:02,011 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 20 transitions, 105 flow [2021-03-25 05:01:02,011 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 20 transitions, 105 flow [2021-03-25 05:01:02,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 20 transitions, 105 flow [2021-03-25 05:01:02,014 INFO L129 PetriNetUnfolder]: 1/32 cut-off events. [2021-03-25 05:01:02,015 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-25 05:01:02,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 32 events. 1/32 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 76. Up to 9 conditions per place. [2021-03-25 05:01:02,015 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 05:01:02,016 INFO L154 LiptonReduction]: Checked pairs total: 73 [2021-03-25 05:01:02,016 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:02,017 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 05:01:02,017 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 105 flow [2021-03-25 05:01:02,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,017 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:02,018 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:02,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:01:02,018 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:02,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:02,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1864736733, now seen corresponding path program 1 times [2021-03-25 05:01:02,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:02,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206066440] [2021-03-25 05:01:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:02,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:02,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:02,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206066440] [2021-03-25 05:01:02,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:02,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:02,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438320776] [2021-03-25 05:01:02,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:02,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:02,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:02,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:02,053 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 115 [2021-03-25 05:01:02,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:02,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 115 [2021-03-25 05:01:02,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:02,074 INFO L129 PetriNetUnfolder]: 1/34 cut-off events. [2021-03-25 05:01:02,075 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2021-03-25 05:01:02,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 34 events. 1/34 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 82 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 86. Up to 9 conditions per place. [2021-03-25 05:01:02,076 INFO L132 encePairwiseOnDemand]: 111/115 looper letters, 1 selfloop transitions, 3 changer transitions 5/21 dead transitions. [2021-03-25 05:01:02,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 21 transitions, 122 flow [2021-03-25 05:01:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 05:01:02,077 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.85 [2021-03-25 05:01:02,077 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 05:01:02,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 05:01:02,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:02,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 05:01:02,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,080 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,081 INFO L185 Difference]: Start difference. First operand has 36 places, 20 transitions, 105 flow. Second operand 4 states and 391 transitions. [2021-03-25 05:01:02,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 21 transitions, 122 flow [2021-03-25 05:01:02,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 21 transitions, 108 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 05:01:02,084 INFO L241 Difference]: Finished difference. Result has 38 places, 16 transitions, 82 flow [2021-03-25 05:01:02,084 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=38, PETRI_TRANSITIONS=16} [2021-03-25 05:01:02,085 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 05:01:02,085 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:02,085 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 16 transitions, 82 flow [2021-03-25 05:01:02,085 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 16 transitions, 82 flow [2021-03-25 05:01:02,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 16 transitions, 82 flow [2021-03-25 05:01:02,087 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 05:01:02,087 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 05:01:02,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 18 events. 0/18 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:01:02,089 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 05:01:02,151 INFO L154 LiptonReduction]: Checked pairs total: 44 [2021-03-25 05:01:02,152 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:01:02,152 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-25 05:01:02,155 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 14 transitions, 78 flow [2021-03-25 05:01:02,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,155 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:02,155 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:02,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:01:02,155 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:02,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:02,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1165052109, now seen corresponding path program 1 times [2021-03-25 05:01:02,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:02,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496382589] [2021-03-25 05:01:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:02,216 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:01:02,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:01:02,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:02,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496382589] [2021-03-25 05:01:02,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:02,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:01:02,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327379720] [2021-03-25 05:01:02,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:01:02,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:02,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:01:02,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:01:02,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2021-03-25 05:01:02,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 14 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:02,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2021-03-25 05:01:02,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:02,239 INFO L129 PetriNetUnfolder]: 16/44 cut-off events. [2021-03-25 05:01:02,239 INFO L130 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2021-03-25 05:01:02,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 44 events. 16/44 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 100 event pairs, 7 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 132. Up to 34 conditions per place. [2021-03-25 05:01:02,240 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2021-03-25 05:01:02,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 17 transitions, 106 flow [2021-03-25 05:01:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:01:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:01:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2021-03-25 05:01:02,241 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2021-03-25 05:01:02,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2021-03-25 05:01:02,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2021-03-25 05:01:02,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:02,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2021-03-25 05:01:02,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,243 INFO L185 Difference]: Start difference. First operand has 36 places, 14 transitions, 78 flow. Second operand 3 states and 297 transitions. [2021-03-25 05:01:02,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 17 transitions, 106 flow [2021-03-25 05:01:02,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 76 flow, removed 4 selfloop flow, removed 10 redundant places. [2021-03-25 05:01:02,245 INFO L241 Difference]: Finished difference. Result has 29 places, 16 transitions, 70 flow [2021-03-25 05:01:02,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2021-03-25 05:01:02,246 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:01:02,246 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:02,246 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 16 transitions, 70 flow [2021-03-25 05:01:02,246 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 16 transitions, 70 flow [2021-03-25 05:01:02,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 16 transitions, 70 flow [2021-03-25 05:01:02,251 INFO L129 PetriNetUnfolder]: 12/38 cut-off events. [2021-03-25 05:01:02,251 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-25 05:01:02,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 38 events. 12/38 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 7 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 105. Up to 28 conditions per place. [2021-03-25 05:01:02,253 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 05:01:02,289 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:01:02,289 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:01:02,289 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-25 05:01:02,290 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 72 flow [2021-03-25 05:01:02,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:02,290 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:02,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:01:02,291 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1197042032, now seen corresponding path program 1 times [2021-03-25 05:01:02,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:02,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35342247] [2021-03-25 05:01:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:02,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:02,342 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:01:02,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:01:02,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:02,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35342247] [2021-03-25 05:01:02,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:02,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:01:02,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150741858] [2021-03-25 05:01:02,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:01:02,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:01:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:01:02,349 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 118 [2021-03-25 05:01:02,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:02,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 118 [2021-03-25 05:01:02,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:02,369 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-03-25 05:01:02,369 INFO L130 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2021-03-25 05:01:02,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 29 events. 6/29 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 1 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 92. Up to 18 conditions per place. [2021-03-25 05:01:02,370 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 2 selfloop transitions, 5 changer transitions 3/19 dead transitions. [2021-03-25 05:01:02,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 109 flow [2021-03-25 05:01:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:01:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:01:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2021-03-25 05:01:02,372 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.836864406779661 [2021-03-25 05:01:02,372 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2021-03-25 05:01:02,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2021-03-25 05:01:02,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:02,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2021-03-25 05:01:02,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,375 INFO L185 Difference]: Start difference. First operand has 29 places, 16 transitions, 72 flow. Second operand 4 states and 395 transitions. [2021-03-25 05:01:02,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 109 flow [2021-03-25 05:01:02,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:01:02,377 INFO L241 Difference]: Finished difference. Result has 32 places, 16 transitions, 87 flow [2021-03-25 05:01:02,378 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=32, PETRI_TRANSITIONS=16} [2021-03-25 05:01:02,378 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2021-03-25 05:01:02,378 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:02,378 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 16 transitions, 87 flow [2021-03-25 05:01:02,378 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 16 transitions, 87 flow [2021-03-25 05:01:02,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 16 transitions, 87 flow [2021-03-25 05:01:02,380 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 05:01:02,380 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-25 05:01:02,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 21 events. 2/21 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 62. Up to 10 conditions per place. [2021-03-25 05:01:02,381 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 05:01:02,496 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:01:02,496 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:01:02,497 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 119 [2021-03-25 05:01:02,501 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 15 transitions, 86 flow [2021-03-25 05:01:02,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:01:02,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:01:02,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:01:02,502 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:01:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:01:02,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2113204655, now seen corresponding path program 1 times [2021-03-25 05:01:02,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:01:02,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355441150] [2021-03-25 05:01:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:01:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:01:02,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:02,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:01:02,558 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:01:02,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:01:02,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:01:02,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:01:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:01:02,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355441150] [2021-03-25 05:01:02,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:01:02,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:01:02,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667324584] [2021-03-25 05:01:02,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:01:02,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:01:02,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:01:02,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:01:02,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-03-25 05:01:02,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 15 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:01:02,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-03-25 05:01:02,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:01:02,586 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 05:01:02,586 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-25 05:01:02,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 17 events. 1/17 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2021-03-25 05:01:02,586 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-25 05:01:02,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 14 transitions, 86 flow [2021-03-25 05:01:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:01:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:01:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2021-03-25 05:01:02,588 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8116666666666666 [2021-03-25 05:01:02,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2021-03-25 05:01:02,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2021-03-25 05:01:02,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:01:02,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2021-03-25 05:01:02,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,591 INFO L185 Difference]: Start difference. First operand has 31 places, 15 transitions, 86 flow. Second operand 5 states and 487 transitions. [2021-03-25 05:01:02,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 14 transitions, 86 flow [2021-03-25 05:01:02,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 14 transitions, 68 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-25 05:01:02,592 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-25 05:01:02,592 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-25 05:01:02,592 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-25 05:01:02,592 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:01:02,592 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 05:01:02,593 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 05:01:02,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:01:02,593 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:01:02,593 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:01:02,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:01:02,593 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:01:02,593 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:01:02,593 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:01:02,593 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:01:02,596 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:01:02,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:01:02,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:01:02,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:01:02 BasicIcfg [2021-03-25 05:01:02,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:01:02,600 INFO L168 Benchmark]: Toolchain (without parser) took 4748.41 ms. Allocated memory was 255.9 MB in the beginning and 511.7 MB in the end (delta: 255.9 MB). Free memory was 231.7 MB in the beginning and 414.3 MB in the end (delta: -182.6 MB). Peak memory consumption was 74.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:02,600 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 237.8 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:01:02,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.67 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 231.7 MB in the beginning and 389.9 MB in the end (delta: -158.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:02,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.64 ms. Allocated memory is still 425.7 MB. Free memory was 389.9 MB in the beginning and 388.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:02,601 INFO L168 Benchmark]: Boogie Preprocessor took 14.81 ms. Allocated memory is still 425.7 MB. Free memory was 387.6 MB in the beginning and 386.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:02,601 INFO L168 Benchmark]: RCFGBuilder took 437.97 ms. Allocated memory is still 425.7 MB. Free memory was 386.5 MB in the beginning and 365.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:02,602 INFO L168 Benchmark]: TraceAbstraction took 3805.29 ms. Allocated memory was 425.7 MB in the beginning and 511.7 MB in the end (delta: 86.0 MB). Free memory was 364.6 MB in the beginning and 414.3 MB in the end (delta: -49.7 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:01:02,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 237.8 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 420.67 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 231.7 MB in the beginning and 389.9 MB in the end (delta: -158.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 64.64 ms. Allocated memory is still 425.7 MB. Free memory was 389.9 MB in the beginning and 388.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.81 ms. Allocated memory is still 425.7 MB. Free memory was 387.6 MB in the beginning and 386.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 437.97 ms. Allocated memory is still 425.7 MB. Free memory was 386.5 MB in the beginning and 365.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3805.29 ms. Allocated memory was 425.7 MB in the beginning and 511.7 MB in the end (delta: 86.0 MB). Free memory was 364.6 MB in the beginning and 414.3 MB in the end (delta: -49.7 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1379.0ms, 67 PlacesBefore, 31 PlacesAfterwards, 58 TransitionsBefore, 21 TransitionsAfterwards, 812 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 861 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 559, positive: 533, positive conditional: 0, positive unconditional: 533, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 390, positive: 375, positive conditional: 0, positive unconditional: 375, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 390, positive: 375, positive conditional: 0, positive unconditional: 375, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 559, positive: 158, positive conditional: 0, positive unconditional: 158, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 390, unknown conditional: 0, unknown unconditional: 390] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 823.7ms, 34 PlacesBefore, 29 PlacesAfterwards, 23 TransitionsBefore, 18 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 273 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 118, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 21, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 21, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 118, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 21, unknown conditional: 0, unknown unconditional: 21] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 31 PlacesBefore, 31 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 136 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4ms, 34 PlacesBefore, 34 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 92 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 8, positive conditional: 0, positive unconditional: 8, 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: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7ms, 33 PlacesBefore, 33 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 94 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 81 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0ms, 36 PlacesBefore, 36 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 73 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 66.6ms, 38 PlacesBefore, 36 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 43.1ms, 29 PlacesBefore, 29 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 118.2ms, 32 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 29 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3674.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 317.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1470.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 8 SDslu, 8 SDs, 0 SdLazy, 69 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=5, InterpolantAutomatonStates: 34, 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: 19.2ms SsaConstructionTime, 161.5ms SatisfiabilityAnalysisTime, 440.6ms InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...