./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 13:46:11,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 13:46:11,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 13:46:11,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 13:46:11,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 13:46:11,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 13:46:11,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 13:46:11,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 13:46:11,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 13:46:11,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 13:46:11,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 13:46:11,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 13:46:11,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 13:46:11,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 13:46:11,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 13:46:11,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 13:46:11,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 13:46:11,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 13:46:11,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 13:46:11,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 13:46:11,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 13:46:11,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 13:46:11,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 13:46:11,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 13:46:11,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 13:46:11,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 13:46:11,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 13:46:11,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 13:46:11,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 13:46:11,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 13:46:11,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 13:46:11,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 13:46:11,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 13:46:11,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 13:46:11,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 13:46:11,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 13:46:11,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 13:46:11,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 13:46:11,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 13:46:11,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 13:46:11,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 13:46:11,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 13:46:11,201 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 13:46:11,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 13:46:11,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 13:46:11,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 13:46:11,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 13:46:11,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 13:46:11,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 13:46:11,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 13:46:11,204 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 13:46:11,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 13:46:11,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 13:46:11,206 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 13:46:11,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 13:46:11,208 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 13:46:11,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 13:46:11,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 13:46:11,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 13:46:11,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 13:46:11,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:46:11,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 13:46:11,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 13:46:11,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 13:46:11,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 13:46:11,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 13:46:11,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 13:46:11,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 13:46:11,211 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 13:46:11,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 13:46:11,211 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 13:46:11,211 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 13:46:11,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 13:46:11,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 13:46:11,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 13:46:11,486 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 13:46:11,486 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 13:46:11,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-09-01 13:46:12,413 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 13:46:12,575 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 13:46:12,575 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-09-01 13:46:12,579 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426086ded/6f87fbe7af304068ba18c1c7678af724/FLAG3511cc4d9 [2023-09-01 13:46:12,590 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426086ded/6f87fbe7af304068ba18c1c7678af724 [2023-09-01 13:46:12,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 13:46:12,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 13:46:12,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 13:46:12,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 13:46:12,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 13:46:12,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f328aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12, skipping insertion in model container [2023-09-01 13:46:12,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 13:46:12,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 13:46:12,777 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-09-01 13:46:12,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:46:12,794 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 13:46:12,826 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-09-01 13:46:12,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 13:46:12,847 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:46:12,848 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 13:46:12,852 INFO L208 MainTranslator]: Completed translation [2023-09-01 13:46:12,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12 WrapperNode [2023-09-01 13:46:12,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 13:46:12,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 13:46:12,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 13:46:12,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 13:46:12,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,906 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 354 [2023-09-01 13:46:12,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 13:46:12,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 13:46:12,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 13:46:12,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 13:46:12,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 13:46:12,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 13:46:12,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 13:46:12,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 13:46:12,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (1/1) ... [2023-09-01 13:46:12,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 13:46:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:12,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 13:46:12,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 13:46:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 13:46:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 13:46:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 13:46:13,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 13:46:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 13:46:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 13:46:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 13:46:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 13:46:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 13:46:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 13:46:13,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 13:46:13,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 13:46:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 13:46:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 13:46:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 13:46:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 13:46:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 13:46:13,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 13:46:13,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 13:46:13,024 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 13:46:13,131 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 13:46:13,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 13:46:13,545 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 13:46:13,696 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 13:46:13,696 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 13:46:13,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:46:13 BoogieIcfgContainer [2023-09-01 13:46:13,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 13:46:13,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 13:46:13,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 13:46:13,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 13:46:13,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:46:12" (1/3) ... [2023-09-01 13:46:13,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d95ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:46:13, skipping insertion in model container [2023-09-01 13:46:13,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:46:12" (2/3) ... [2023-09-01 13:46:13,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d95ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:46:13, skipping insertion in model container [2023-09-01 13:46:13,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:46:13" (3/3) ... [2023-09-01 13:46:13,704 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-09-01 13:46:13,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 13:46:13,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 13:46:13,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 13:46:13,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 13:46:13,786 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 13:46:13,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 251 transitions, 534 flow [2023-09-01 13:46:13,903 INFO L130 PetriNetUnfolder]: 22/247 cut-off events. [2023-09-01 13:46:13,903 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 13:46:13,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 247 events. 22/247 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 132 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-09-01 13:46:13,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 251 transitions, 534 flow [2023-09-01 13:46:13,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 235 transitions, 494 flow [2023-09-01 13:46:13,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 13:46:13,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 235 transitions, 494 flow [2023-09-01 13:46:13,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 235 transitions, 494 flow [2023-09-01 13:46:13,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 235 transitions, 494 flow [2023-09-01 13:46:13,978 INFO L130 PetriNetUnfolder]: 22/235 cut-off events. [2023-09-01 13:46:13,979 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 13:46:13,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 22/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-09-01 13:46:13,983 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-09-01 13:46:21,402 INFO L134 LiptonReduction]: Checked pairs total: 2860 [2023-09-01 13:46:21,402 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-09-01 13:46:21,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 13:46:21,415 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41ffdb86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 13:46:21,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 13:46:21,419 INFO L130 PetriNetUnfolder]: 7/36 cut-off events. [2023-09-01 13:46:21,420 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 13:46:21,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:21,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:21,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:21,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:21,423 INFO L85 PathProgramCache]: Analyzing trace with hash 570355702, now seen corresponding path program 1 times [2023-09-01 13:46:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292677852] [2023-09-01 13:46:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:21,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:46:21,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:21,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292677852] [2023-09-01 13:46:21,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292677852] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:21,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:21,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 13:46:21,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177638129] [2023-09-01 13:46:21,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:46:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:21,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:46:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 13:46:21,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 489 [2023-09-01 13:46:21,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:21,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:21,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 489 [2023-09-01 13:46:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:22,101 INFO L130 PetriNetUnfolder]: 1616/2218 cut-off events. [2023-09-01 13:46:22,101 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-09-01 13:46:22,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2218 events. 1616/2218 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8933 event pairs, 271 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 3411. Up to 1413 conditions per place. [2023-09-01 13:46:22,113 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 45 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-09-01 13:46:22,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 247 flow [2023-09-01 13:46:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:46:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:46:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2023-09-01 13:46:22,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48807089297886846 [2023-09-01 13:46:22,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2023-09-01 13:46:22,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2023-09-01 13:46:22,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:22,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2023-09-01 13:46:22,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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) [2023-09-01 13:46:22,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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) [2023-09-01 13:46:22,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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) [2023-09-01 13:46:22,149 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 716 transitions. [2023-09-01 13:46:22,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 247 flow [2023-09-01 13:46:22,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 13:46:22,157 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-09-01 13:46:22,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-09-01 13:46:22,162 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-09-01 13:46:22,164 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-09-01 13:46:22,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 13:46:22,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:22,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:22,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 13:46:22,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:22,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -775864851, now seen corresponding path program 1 times [2023-09-01 13:46:22,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:22,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298944723] [2023-09-01 13:46:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:46:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298944723] [2023-09-01 13:46:22,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298944723] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:22,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:22,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 13:46:22,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179999166] [2023-09-01 13:46:22,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:46:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:46:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 13:46:22,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 489 [2023-09-01 13:46:22,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2023-09-01 13:46:22,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:22,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 489 [2023-09-01 13:46:22,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:22,526 INFO L130 PetriNetUnfolder]: 1642/2243 cut-off events. [2023-09-01 13:46:22,527 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-09-01 13:46:22,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 2243 events. 1642/2243 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9269 event pairs, 416 based on Foata normal form. 76/1829 useless extension candidates. Maximal degree in co-relation 1646. Up to 1400 conditions per place. [2023-09-01 13:46:22,546 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 52 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-09-01 13:46:22,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 264 flow [2023-09-01 13:46:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:46:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:46:22,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-09-01 13:46:22,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832992501704158 [2023-09-01 13:46:22,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-09-01 13:46:22,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-09-01 13:46:22,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:22,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-09-01 13:46:22,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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) [2023-09-01 13:46:22,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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) [2023-09-01 13:46:22,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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) [2023-09-01 13:46:22,553 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 709 transitions. [2023-09-01 13:46:22,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 264 flow [2023-09-01 13:46:22,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 13:46:22,555 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-09-01 13:46:22,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-09-01 13:46:22,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-09-01 13:46:22,556 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-09-01 13:46:22,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2023-09-01 13:46:22,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:22,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:22,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 13:46:22,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:22,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2096498108, now seen corresponding path program 1 times [2023-09-01 13:46:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295748489] [2023-09-01 13:46:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:46:22,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:22,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295748489] [2023-09-01 13:46:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295748489] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:22,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:22,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 13:46:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471796008] [2023-09-01 13:46:22,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:22,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 13:46:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 13:46:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 13:46:22,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 489 [2023-09-01 13:46:22,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2023-09-01 13:46:22,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:22,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 489 [2023-09-01 13:46:22,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:22,883 INFO L130 PetriNetUnfolder]: 1670/2393 cut-off events. [2023-09-01 13:46:22,883 INFO L131 PetriNetUnfolder]: For 1007/1007 co-relation queries the response was YES. [2023-09-01 13:46:22,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5644 conditions, 2393 events. 1670/2393 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11221 event pairs, 475 based on Foata normal form. 92/2262 useless extension candidates. Maximal degree in co-relation 2824. Up to 1587 conditions per place. [2023-09-01 13:46:22,893 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 56 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-09-01 13:46:22,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 298 flow [2023-09-01 13:46:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 13:46:22,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 13:46:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-09-01 13:46:22,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48466257668711654 [2023-09-01 13:46:22,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-09-01 13:46:22,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-09-01 13:46:22,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:22,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-09-01 13:46:22,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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) [2023-09-01 13:46:22,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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) [2023-09-01 13:46:22,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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) [2023-09-01 13:46:22,919 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 711 transitions. [2023-09-01 13:46:22,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 298 flow [2023-09-01 13:46:22,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 13:46:22,921 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-09-01 13:46:22,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-09-01 13:46:22,922 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-09-01 13:46:22,925 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-09-01 13:46:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2023-09-01 13:46:22,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:22,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:22,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 13:46:22,926 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:22,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1042939980, now seen corresponding path program 1 times [2023-09-01 13:46:22,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:22,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063741270] [2023-09-01 13:46:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063741270] [2023-09-01 13:46:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063741270] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:23,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:23,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 13:46:23,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960312920] [2023-09-01 13:46:23,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:23,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:46:23,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:46:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:46:23,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 489 [2023-09-01 13:46:23,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 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) [2023-09-01 13:46:23,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:23,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 489 [2023-09-01 13:46:23,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:23,408 INFO L130 PetriNetUnfolder]: 2089/3081 cut-off events. [2023-09-01 13:46:23,408 INFO L131 PetriNetUnfolder]: For 1721/1721 co-relation queries the response was YES. [2023-09-01 13:46:23,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3081 events. 2089/3081 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15920 event pairs, 1506 based on Foata normal form. 74/3085 useless extension candidates. Maximal degree in co-relation 3812. Up to 2239 conditions per place. [2023-09-01 13:46:23,420 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 62 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-09-01 13:46:23,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 336 flow [2023-09-01 13:46:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 13:46:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 13:46:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-09-01 13:46:23,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45807770961145194 [2023-09-01 13:46:23,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-09-01 13:46:23,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-09-01 13:46:23,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:23,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-09-01 13:46:23,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 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) [2023-09-01 13:46:23,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 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) [2023-09-01 13:46:23,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 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) [2023-09-01 13:46:23,428 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 4 states and 896 transitions. [2023-09-01 13:46:23,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 336 flow [2023-09-01 13:46:23,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 13:46:23,430 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 142 flow [2023-09-01 13:46:23,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-09-01 13:46:23,431 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-09-01 13:46:23,431 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 142 flow [2023-09-01 13:46:23,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 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) [2023-09-01 13:46:23,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:23,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:23,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 13:46:23,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:23,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash -542120705, now seen corresponding path program 1 times [2023-09-01 13:46:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322114837] [2023-09-01 13:46:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 13:46:23,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:23,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322114837] [2023-09-01 13:46:23,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322114837] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:23,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:23,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 13:46:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156055138] [2023-09-01 13:46:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:23,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 13:46:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:23,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 13:46:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 13:46:23,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 489 [2023-09-01 13:46:23,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 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) [2023-09-01 13:46:23,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:23,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 489 [2023-09-01 13:46:23,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:23,976 INFO L130 PetriNetUnfolder]: 3315/5119 cut-off events. [2023-09-01 13:46:23,976 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-09-01 13:46:23,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 5119 events. 3315/5119 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31151 event pairs, 2550 based on Foata normal form. 280/5300 useless extension candidates. Maximal degree in co-relation 9501. Up to 2950 conditions per place. [2023-09-01 13:46:23,992 INFO L137 encePairwiseOnDemand]: 484/489 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-09-01 13:46:23,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 480 flow [2023-09-01 13:46:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 13:46:23,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 13:46:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1128 transitions. [2023-09-01 13:46:24,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46134969325153374 [2023-09-01 13:46:24,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1128 transitions. [2023-09-01 13:46:24,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1128 transitions. [2023-09-01 13:46:24,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:24,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1128 transitions. [2023-09-01 13:46:24,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.6) internal successors, (1128), 5 states have internal predecessors, (1128), 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) [2023-09-01 13:46:24,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 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) [2023-09-01 13:46:24,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 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) [2023-09-01 13:46:24,029 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 142 flow. Second operand 5 states and 1128 transitions. [2023-09-01 13:46:24,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 480 flow [2023-09-01 13:46:24,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 13:46:24,032 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 171 flow [2023-09-01 13:46:24,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-09-01 13:46:24,033 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-09-01 13:46:24,033 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 171 flow [2023-09-01 13:46:24,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.5) internal successors, (862), 4 states have internal predecessors, (862), 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) [2023-09-01 13:46:24,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:24,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:24,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 13:46:24,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:24,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1581329091, now seen corresponding path program 1 times [2023-09-01 13:46:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297772181] [2023-09-01 13:46:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:24,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297772181] [2023-09-01 13:46:24,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297772181] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:24,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:24,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 13:46:24,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271521014] [2023-09-01 13:46:24,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:24,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 13:46:24,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 13:46:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 13:46:24,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 489 [2023-09-01 13:46:24,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 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) [2023-09-01 13:46:24,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:24,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 489 [2023-09-01 13:46:24,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:24,966 INFO L130 PetriNetUnfolder]: 4927/7544 cut-off events. [2023-09-01 13:46:24,967 INFO L131 PetriNetUnfolder]: For 4545/4551 co-relation queries the response was YES. [2023-09-01 13:46:24,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18066 conditions, 7544 events. 4927/7544 cut-off events. For 4545/4551 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 46570 event pairs, 2544 based on Foata normal form. 110/7576 useless extension candidates. Maximal degree in co-relation 12232. Up to 2551 conditions per place. [2023-09-01 13:46:24,991 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 97 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2023-09-01 13:46:24,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 110 transitions, 581 flow [2023-09-01 13:46:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 13:46:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 13:46:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1322 transitions. [2023-09-01 13:46:24,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505794137695978 [2023-09-01 13:46:24,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1322 transitions. [2023-09-01 13:46:24,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1322 transitions. [2023-09-01 13:46:24,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:24,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1322 transitions. [2023-09-01 13:46:24,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 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) [2023-09-01 13:46:25,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:25,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:25,001 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 171 flow. Second operand 6 states and 1322 transitions. [2023-09-01 13:46:25,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 110 transitions, 581 flow [2023-09-01 13:46:25,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 110 transitions, 576 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 13:46:25,004 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 203 flow [2023-09-01 13:46:25,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-09-01 13:46:25,004 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-09-01 13:46:25,005 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 203 flow [2023-09-01 13:46:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 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) [2023-09-01 13:46:25,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:25,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 13:46:25,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:25,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1340178932, now seen corresponding path program 1 times [2023-09-01 13:46:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:25,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408888908] [2023-09-01 13:46:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 13:46:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408888908] [2023-09-01 13:46:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408888908] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:25,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 13:46:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676079224] [2023-09-01 13:46:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 13:46:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 13:46:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 13:46:25,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 489 [2023-09-01 13:46:25,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 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) [2023-09-01 13:46:25,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:25,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 489 [2023-09-01 13:46:25,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:25,912 INFO L130 PetriNetUnfolder]: 4195/6462 cut-off events. [2023-09-01 13:46:25,912 INFO L131 PetriNetUnfolder]: For 3720/3736 co-relation queries the response was YES. [2023-09-01 13:46:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15375 conditions, 6462 events. 4195/6462 cut-off events. For 3720/3736 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 40672 event pairs, 1906 based on Foata normal form. 88/6518 useless extension candidates. Maximal degree in co-relation 11333. Up to 2907 conditions per place. [2023-09-01 13:46:25,930 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 57 selfloop transitions, 6 changer transitions 32/100 dead transitions. [2023-09-01 13:46:25,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 100 transitions, 528 flow [2023-09-01 13:46:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 13:46:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 13:46:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1315 transitions. [2023-09-01 13:46:25,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481935923653715 [2023-09-01 13:46:25,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1315 transitions. [2023-09-01 13:46:25,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1315 transitions. [2023-09-01 13:46:25,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:25,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1315 transitions. [2023-09-01 13:46:25,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.16666666666666) internal successors, (1315), 6 states have internal predecessors, (1315), 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) [2023-09-01 13:46:25,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:25,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:25,940 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 203 flow. Second operand 6 states and 1315 transitions. [2023-09-01 13:46:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 100 transitions, 528 flow [2023-09-01 13:46:25,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 100 transitions, 518 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 13:46:25,945 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 198 flow [2023-09-01 13:46:25,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-09-01 13:46:25,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-09-01 13:46:25,946 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 198 flow [2023-09-01 13:46:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 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) [2023-09-01 13:46:25,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:25,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 13:46:25,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:25,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:25,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1556167601, now seen corresponding path program 1 times [2023-09-01 13:46:25,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315211172] [2023-09-01 13:46:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:46:26,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:26,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315211172] [2023-09-01 13:46:26,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315211172] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:26,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:26,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 13:46:26,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604389428] [2023-09-01 13:46:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:26,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 13:46:26,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 13:46:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 13:46:26,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 489 [2023-09-01 13:46:26,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 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) [2023-09-01 13:46:26,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:26,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 489 [2023-09-01 13:46:26,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:26,863 INFO L130 PetriNetUnfolder]: 4075/5840 cut-off events. [2023-09-01 13:46:26,863 INFO L131 PetriNetUnfolder]: For 4552/4552 co-relation queries the response was YES. [2023-09-01 13:46:26,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14882 conditions, 5840 events. 4075/5840 cut-off events. For 4552/4552 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 30908 event pairs, 856 based on Foata normal form. 408/6232 useless extension candidates. Maximal degree in co-relation 12650. Up to 3054 conditions per place. [2023-09-01 13:46:26,877 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 75 selfloop transitions, 9 changer transitions 11/99 dead transitions. [2023-09-01 13:46:26,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 571 flow [2023-09-01 13:46:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 13:46:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 13:46:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1489 transitions. [2023-09-01 13:46:26,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349985392930178 [2023-09-01 13:46:26,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1489 transitions. [2023-09-01 13:46:26,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1489 transitions. [2023-09-01 13:46:26,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:26,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1489 transitions. [2023-09-01 13:46:26,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.71428571428572) internal successors, (1489), 7 states have internal predecessors, (1489), 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) [2023-09-01 13:46:26,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 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) [2023-09-01 13:46:26,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 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) [2023-09-01 13:46:26,888 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 198 flow. Second operand 7 states and 1489 transitions. [2023-09-01 13:46:26,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 571 flow [2023-09-01 13:46:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 99 transitions, 545 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 13:46:26,890 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 220 flow [2023-09-01 13:46:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-09-01 13:46:26,891 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-09-01 13:46:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 220 flow [2023-09-01 13:46:26,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 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) [2023-09-01 13:46:26,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:26,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 13:46:26,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:26,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 201289136, now seen corresponding path program 1 times [2023-09-01 13:46:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273454680] [2023-09-01 13:46:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 13:46:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273454680] [2023-09-01 13:46:27,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273454680] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:27,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 13:46:27,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 13:46:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466138301] [2023-09-01 13:46:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 13:46:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 13:46:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 13:46:27,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 489 [2023-09-01 13:46:27,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 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) [2023-09-01 13:46:27,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:27,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 489 [2023-09-01 13:46:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:27,507 INFO L130 PetriNetUnfolder]: 2558/3601 cut-off events. [2023-09-01 13:46:27,508 INFO L131 PetriNetUnfolder]: For 4352/4570 co-relation queries the response was YES. [2023-09-01 13:46:27,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10395 conditions, 3601 events. 2558/3601 cut-off events. For 4352/4570 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17678 event pairs, 364 based on Foata normal form. 356/3939 useless extension candidates. Maximal degree in co-relation 10364. Up to 1820 conditions per place. [2023-09-01 13:46:27,519 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 65 selfloop transitions, 5 changer transitions 2/79 dead transitions. [2023-09-01 13:46:27,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 488 flow [2023-09-01 13:46:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 13:46:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 13:46:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2023-09-01 13:46:27,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393319700068166 [2023-09-01 13:46:27,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2023-09-01 13:46:27,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2023-09-01 13:46:27,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:27,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2023-09-01 13:46:27,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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) [2023-09-01 13:46:27,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:27,527 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:27,528 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 220 flow. Second operand 6 states and 1289 transitions. [2023-09-01 13:46:27,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 488 flow [2023-09-01 13:46:27,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 451 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-09-01 13:46:27,531 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 193 flow [2023-09-01 13:46:27,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-09-01 13:46:27,531 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-09-01 13:46:27,531 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 193 flow [2023-09-01 13:46:27,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 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) [2023-09-01 13:46:27,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:27,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:27,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 13:46:27,533 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:27,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1022492673, now seen corresponding path program 1 times [2023-09-01 13:46:27,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:27,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138331589] [2023-09-01 13:46:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:27,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:46:27,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:27,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138331589] [2023-09-01 13:46:27,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138331589] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:27,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793548738] [2023-09-01 13:46:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:27,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:27,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:27,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:27,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 13:46:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:27,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 13:46:27,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:46:28,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 13:46:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793548738] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 13:46:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 14 [2023-09-01 13:46:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949345892] [2023-09-01 13:46:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:28,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 13:46:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:28,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 13:46:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-09-01 13:46:28,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 489 [2023-09-01 13:46:28,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 195.71428571428572) internal successors, (1370), 7 states have internal predecessors, (1370), 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) [2023-09-01 13:46:28,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:28,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 489 [2023-09-01 13:46:28,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:28,773 INFO L130 PetriNetUnfolder]: 3440/4692 cut-off events. [2023-09-01 13:46:28,774 INFO L131 PetriNetUnfolder]: For 4852/5016 co-relation queries the response was YES. [2023-09-01 13:46:28,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13882 conditions, 4692 events. 3440/4692 cut-off events. For 4852/5016 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19693 event pairs, 343 based on Foata normal form. 400/5091 useless extension candidates. Maximal degree in co-relation 13852. Up to 2520 conditions per place. [2023-09-01 13:46:28,796 INFO L137 encePairwiseOnDemand]: 479/489 looper letters, 116 selfloop transitions, 18 changer transitions 0/136 dead transitions. [2023-09-01 13:46:28,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 136 transitions, 799 flow [2023-09-01 13:46:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 13:46:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 13:46:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1830 transitions. [2023-09-01 13:46:28,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158145875937287 [2023-09-01 13:46:28,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1830 transitions. [2023-09-01 13:46:28,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1830 transitions. [2023-09-01 13:46:28,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:28,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1830 transitions. [2023-09-01 13:46:28,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.33333333333334) internal successors, (1830), 9 states have internal predecessors, (1830), 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) [2023-09-01 13:46:28,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 489.0) internal successors, (4890), 10 states have internal predecessors, (4890), 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) [2023-09-01 13:46:28,808 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 489.0) internal successors, (4890), 10 states have internal predecessors, (4890), 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) [2023-09-01 13:46:28,808 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 193 flow. Second operand 9 states and 1830 transitions. [2023-09-01 13:46:28,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 136 transitions, 799 flow [2023-09-01 13:46:28,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 136 transitions, 775 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-09-01 13:46:28,813 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 330 flow [2023-09-01 13:46:28,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-09-01 13:46:28,813 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-09-01 13:46:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 330 flow [2023-09-01 13:46:28,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 195.71428571428572) internal successors, (1370), 7 states have internal predecessors, (1370), 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) [2023-09-01 13:46:28,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:28,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:28,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 13:46:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 13:46:29,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:29,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:29,020 INFO L85 PathProgramCache]: Analyzing trace with hash -365900509, now seen corresponding path program 2 times [2023-09-01 13:46:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594667328] [2023-09-01 13:46:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:29,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:46:29,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:29,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594667328] [2023-09-01 13:46:29,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594667328] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:29,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34956278] [2023-09-01 13:46:29,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 13:46:29,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:29,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:29,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:29,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 13:46:29,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 13:46:29,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 13:46:29,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 13:46:29,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:46:29,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 13:46:29,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34956278] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:29,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 13:46:29,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-09-01 13:46:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886001232] [2023-09-01 13:46:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:29,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:46:29,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:46:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 13:46:29,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 489 [2023-09-01 13:46:29,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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) [2023-09-01 13:46:29,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:29,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 489 [2023-09-01 13:46:29,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:29,996 INFO L130 PetriNetUnfolder]: 4386/5898 cut-off events. [2023-09-01 13:46:29,997 INFO L131 PetriNetUnfolder]: For 18338/18812 co-relation queries the response was YES. [2023-09-01 13:46:30,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23261 conditions, 5898 events. 4386/5898 cut-off events. For 18338/18812 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 26375 event pairs, 517 based on Foata normal form. 476/6360 useless extension candidates. Maximal degree in co-relation 23228. Up to 2376 conditions per place. [2023-09-01 13:46:30,029 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 109 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2023-09-01 13:46:30,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 1004 flow [2023-09-01 13:46:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 13:46:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 13:46:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1382 transitions. [2023-09-01 13:46:30,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710293115201091 [2023-09-01 13:46:30,032 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1382 transitions. [2023-09-01 13:46:30,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1382 transitions. [2023-09-01 13:46:30,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:30,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1382 transitions. [2023-09-01 13:46:30,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.33333333333334) internal successors, (1382), 6 states have internal predecessors, (1382), 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) [2023-09-01 13:46:30,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:30,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:30,038 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 330 flow. Second operand 6 states and 1382 transitions. [2023-09-01 13:46:30,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 1004 flow [2023-09-01 13:46:30,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 136 transitions, 968 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-09-01 13:46:30,059 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 519 flow [2023-09-01 13:46:30,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-09-01 13:46:30,059 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-09-01 13:46:30,060 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 519 flow [2023-09-01 13:46:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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) [2023-09-01 13:46:30,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:30,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:30,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 13:46:30,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 13:46:30,265 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:30,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash 734426962, now seen corresponding path program 1 times [2023-09-01 13:46:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67186084] [2023-09-01 13:46:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:46:30,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67186084] [2023-09-01 13:46:30,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67186084] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092240153] [2023-09-01 13:46:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:30,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:30,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:30,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 13:46:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:30,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 13:46:30,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 13:46:30,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 13:46:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092240153] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 13:46:30,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 13:46:30,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-09-01 13:46:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783136613] [2023-09-01 13:46:30,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 13:46:30,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 13:46:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 13:46:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 13:46:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-09-01 13:46:30,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 489 [2023-09-01 13:46:30,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 519 flow. Second operand has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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) [2023-09-01 13:46:30,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 13:46:30,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 489 [2023-09-01 13:46:30,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 13:46:31,613 INFO L130 PetriNetUnfolder]: 8002/10940 cut-off events. [2023-09-01 13:46:31,613 INFO L131 PetriNetUnfolder]: For 58387/59401 co-relation queries the response was YES. [2023-09-01 13:46:31,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48523 conditions, 10940 events. 8002/10940 cut-off events. For 58387/59401 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 54632 event pairs, 1754 based on Foata normal form. 1021/11820 useless extension candidates. Maximal degree in co-relation 48485. Up to 4199 conditions per place. [2023-09-01 13:46:31,675 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 139 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2023-09-01 13:46:31,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 164 transitions, 1514 flow [2023-09-01 13:46:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 13:46:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 13:46:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2023-09-01 13:46:31,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47171097477845947 [2023-09-01 13:46:31,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2023-09-01 13:46:31,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2023-09-01 13:46:31,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 13:46:31,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2023-09-01 13:46:31,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 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) [2023-09-01 13:46:31,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:31,683 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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) [2023-09-01 13:46:31,683 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 519 flow. Second operand 6 states and 1384 transitions. [2023-09-01 13:46:31,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 164 transitions, 1514 flow [2023-09-01 13:46:31,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1481 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-09-01 13:46:31,825 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 630 flow [2023-09-01 13:46:31,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2023-09-01 13:46:31,826 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2023-09-01 13:46:31,827 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 630 flow [2023-09-01 13:46:31,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 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) [2023-09-01 13:46:31,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 13:46:31,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 13:46:31,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 13:46:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:32,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-09-01 13:46:32,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 13:46:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1209534086, now seen corresponding path program 1 times [2023-09-01 13:46:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 13:46:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792490543] [2023-09-01 13:46:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 13:46:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:46:34,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 13:46:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792490543] [2023-09-01 13:46:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792490543] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 13:46:34,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498598848] [2023-09-01 13:46:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 13:46:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 13:46:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 13:46:34,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 13:46:34,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 13:46:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 13:46:34,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 102 conjunts are in the unsatisfiable core [2023-09-01 13:46:34,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 13:46:34,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:34,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:34,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:34,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:34,932 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-09-01 13:46:34,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2023-09-01 13:46:35,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 13:46:35,122 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 13:46:35,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 13:46:35,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:46:35,303 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 13:46:35,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 13:46:35,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:46:35,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:46:35,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:46:35,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 13:46:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:36,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:36,509 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 13:46:36,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2023-09-01 13:46:36,885 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 13:46:36,905 INFO L321 Elim1Store]: treesize reduction 55, result has 35.3 percent of original size [2023-09-01 13:46:36,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 43 [2023-09-01 13:46:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 13:46:36,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 13:46:37,408 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_front~0) (< c_~q2_back~0 0) (< c_~q1_front~0 0) (<= c_~n2~0 c_~q2_back~0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse3 (+ (* c_~q2_back~0 4) c_~q2~0.offset)) (.cse5 (+ c_~f~0.offset (* c_~j~0 4))) (.cse1 (+ c_~q2~0.offset (* c_~q2_front~0 4))) (.cse2 (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))) (and (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse0 (select .cse4 ~q2~0.base))) (or (< 0 (+ c_~total~0 (select .cse0 .cse1) .cse2 1)) (not (= (+ (select .cse0 .cse3) (select (select .cse4 c_~f~0.base) .cse5)) 0)))))) (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse6 (select .cse7 ~q2~0.base))) (or (not (= (+ (select .cse6 .cse3) (select (select .cse7 c_~f~0.base) .cse5)) 0)) (<= (+ c_~total~0 (select .cse6 .cse1) .cse2) 0)))))))) is different from false [2023-09-01 13:46:38,073 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (<= c_~n1~0 c_~q1_front~0) (< c_~q2_back~0 0) (< c_~q1_front~0 0) (<= c_~n2~0 c_~q2_back~0) (< c_~q1_back~0 0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse5 (+ (* c_~q1_front~0 4) c_~q1~0.offset)) (.cse6 (+ c_~q2~0.offset (* c_~q2_front~0 4))) (.cse1 (+ (* c_~q2_back~0 4) c_~q2~0.offset)) (.cse3 (+ c_~f~0.offset (* c_~j~0 4))) (.cse8 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse9 (+ c_~f~0.offset (* c_~i~0 4)))) (and (forall ((v_ArrVal_616 (Array Int Int)) (v_ArrVal_617 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_617))) (let ((.cse4 (select .cse7 c_~q1~0.base))) (or (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse0 (select .cse2 ~q2~0.base))) (or (not (= (+ (select .cse0 .cse1) (select (select .cse2 c_~f~0.base) .cse3)) 0)) (<= (+ (select .cse4 .cse5) c_~total~0 (select .cse0 .cse6)) 0))))) (not (= (select .cse4 .cse8) (select (select .cse7 c_~f~0.base) .cse9))))))) (forall ((v_ArrVal_616 (Array Int Int)) (v_ArrVal_617 (Array Int Int))) (let ((.cse13 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_617))) (let ((.cse10 (select .cse13 c_~q1~0.base))) (or (forall ((~q2~0.base Int) (v_ArrVal_618 (Array Int Int))) (let ((.cse12 (store .cse13 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_618))) (let ((.cse11 (select .cse12 ~q2~0.base))) (or (< 0 (+ (select .cse10 .cse5) c_~total~0 (select .cse11 .cse6) 1)) (not (= (+ (select .cse11 .cse1) (select (select .cse12 c_~f~0.base) .cse3)) 0)))))) (not (= (select .cse10 .cse8) (select (select .cse13 c_~f~0.base) .cse9)))))))))) is different from false [2023-09-01 13:46:40,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:46:40,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 169 [2023-09-01 13:46:41,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:46:43,825 INFO L321 Elim1Store]: treesize reduction 56, result has 72.1 percent of original size [2023-09-01 13:46:43,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 601699123170 treesize of output 593575280754 [2023-09-01 13:49:56,179 WARN L222 SmtUtils]: Spent 3.20m on a formula simplification. DAG size of input: 42104 DAG size of output: 1579 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-09-01 13:49:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:49:59,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:49:59,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 176802 treesize of output 174230 [2023-09-01 13:50:02,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:50:02,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:50:02,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 174114 treesize of output 152726 [2023-09-01 13:50:05,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:50:05,399 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:50:05,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 152610 treesize of output 147350 [2023-09-01 13:50:08,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:50:08,813 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:50:08,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 147234 treesize of output 146006 [2023-09-01 13:50:12,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:50:12,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:50:12,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 129004 treesize of output 108532 [2023-09-01 13:50:15,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 13:50:15,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 13:50:15,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 125410 treesize of output 114774 [2023-09-01 13:58:37,308 WARN L222 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 858 DAG size of output: 937 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15