./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/pthread/triangular-1.i -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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:50:26,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:50:26,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:50:26,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:50:26,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:50:26,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:50:26,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:50:26,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:50:26,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:50:26,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:50:26,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:50:26,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:50:26,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:50:26,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:50:26,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:50:26,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:50:26,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:50:26,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:50:26,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:50:26,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:50:26,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:50:26,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:50:26,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:50:26,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:50:26,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:50:26,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:50:26,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:50:26,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:50:26,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:50:26,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:50:26,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:50:26,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:50:26,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:50:26,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:50:26,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:50:26,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:50:26,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:50:26,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:50:26,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:50:26,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:50:26,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:50:26,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:50:26,928 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:50:26,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:50:26,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:50:26,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:50:26,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:50:26,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:50:26,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:50:26,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:50:26,932 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:50:26,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:50:26,933 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:50:26,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:50:26,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:50:26,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:50:26,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:50:26,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:50:26,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:50:26,934 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:50:26,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:50:26,934 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:50:26,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:50:26,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:50:26,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:50:26,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:50:26,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:50:26,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:50:26,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:50:26,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:50:26,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:50:26,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:50:26,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:50:26,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:50:26,937 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:50:26,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:50:26,937 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:50:26,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:50:27,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:50:27,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:50:27,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:50:27,257 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:50:27,258 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:50:27,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-08-30 22:50:28,425 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:50:28,680 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:50:28,680 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-08-30 22:50:28,689 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bab1793/ad3a9ceb18114df181bc584deb34351b/FLAGc7bad7db6 [2023-08-30 22:50:28,702 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bab1793/ad3a9ceb18114df181bc584deb34351b [2023-08-30 22:50:28,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:50:28,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:50:28,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:50:28,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:50:28,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:50:28,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:28" (1/1) ... [2023-08-30 22:50:28,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d41ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:28, skipping insertion in model container [2023-08-30 22:50:28,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:50:28" (1/1) ... [2023-08-30 22:50:28,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:50:28,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:50:29,064 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2023-08-30 22:50:29,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:50:29,078 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:50:29,126 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2023-08-30 22:50:29,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:50:29,182 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:50:29,182 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 22:50:29,187 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:50:29,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29 WrapperNode [2023-08-30 22:50:29,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:50:29,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:50:29,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:50:29,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:50:29,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,231 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 22:50:29,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:50:29,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:50:29,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:50:29,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:50:29,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:50:29,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:50:29,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:50:29,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:50:29,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (1/1) ... [2023-08-30 22:50:29,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:50:29,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:29,314 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) [2023-08-30 22:50:29,337 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 [2023-08-30 22:50:29,354 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:50:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:50:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:50:29,355 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:50:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:50:29,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 22:50:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:50:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:50:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:50:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:50:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 22:50:29,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:50:29,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:50:29,358 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:50:29,519 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:50:29,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:50:29,659 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:50:29,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:50:29,666 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:50:29,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:29 BoogieIcfgContainer [2023-08-30 22:50:29,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:50:29,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:50:29,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:50:29,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:50:29,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:50:28" (1/3) ... [2023-08-30 22:50:29,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799cc8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:29, skipping insertion in model container [2023-08-30 22:50:29,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:50:29" (2/3) ... [2023-08-30 22:50:29,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799cc8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:50:29, skipping insertion in model container [2023-08-30 22:50:29,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:29" (3/3) ... [2023-08-30 22:50:29,676 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-08-30 22:50:29,681 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:50:29,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:50:29,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 22:50:29,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:50:29,735 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 22:50:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-08-30 22:50:29,815 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-08-30 22:50:29,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:50:29,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 22:50:29,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-08-30 22:50:29,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:29,827 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:50:29,834 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:29,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-08-30 22:50:29,851 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-08-30 22:50:29,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:50:29,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-30 22:50:29,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-08-30 22:50:31,571 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-08-30 22:50:31,571 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-30 22:50:31,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:50:31,593 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;@34af0d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:50:31,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 22:50:31,597 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-08-30 22:50:31,597 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 22:50:31,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:31,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 22:50:31,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:31,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-08-30 22:50:31,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:31,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339838638] [2023-08-30 22:50:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:32,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:32,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339838638] [2023-08-30 22:50:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339838638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:32,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:50:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940388658] [2023-08-30 22:50:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:32,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 22:50:32,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 22:50:32,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 22:50:32,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 124 [2023-08-30 22:50:32,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-08-30 22:50:32,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:32,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 124 [2023-08-30 22:50:32,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:32,152 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-08-30 22:50:32,152 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:50:32,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-08-30 22:50:32,158 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-08-30 22:50:32,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-08-30 22:50:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 22:50:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 22:50:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2023-08-30 22:50:32,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4939516129032258 [2023-08-30 22:50:32,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 245 transitions. [2023-08-30 22:50:32,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 245 transitions. [2023-08-30 22:50:32,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:32,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 245 transitions. [2023-08-30 22:50:32,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2023-08-30 22:50:32,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-08-30 22:50:32,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-08-30 22:50:32,191 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 245 transitions. [2023-08-30 22:50:32,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-08-30 22:50:32,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 22:50:32,194 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-08-30 22:50:32,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-30 22:50:32,201 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-30 22:50:32,202 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-08-30 22:50:32,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-08-30 22:50:32,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:32,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:32,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:50:32,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:32,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-08-30 22:50:32,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:32,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553135090] [2023-08-30 22:50:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553135090] [2023-08-30 22:50:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553135090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:32,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:32,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:50:32,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643759233] [2023-08-30 22:50:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:32,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:50:32,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:50:32,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:50:32,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:32,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:32,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:32,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:32,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:32,431 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-08-30 22:50:32,431 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-30 22:50:32,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-08-30 22:50:32,433 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-30 22:50:32,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-08-30 22:50:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 22:50:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 22:50:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-08-30 22:50:32,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-08-30 22:50:32,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-08-30 22:50:32,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-08-30 22:50:32,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:32,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-08-30 22:50:32,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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) [2023-08-30 22:50:32,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-08-30 22:50:32,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-08-30 22:50:32,441 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-08-30 22:50:32,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-08-30 22:50:32,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 22:50:32,443 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-08-30 22:50:32,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-30 22:50:32,444 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-08-30 22:50:32,444 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-08-30 22:50:32,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:32,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:32,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:32,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:50:32,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:32,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-08-30 22:50:32,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:32,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870147715] [2023-08-30 22:50:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870147715] [2023-08-30 22:50:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870147715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:32,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:50:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163157125] [2023-08-30 22:50:32,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 22:50:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 22:50:32,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 22:50:32,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:32,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:32,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:32,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:32,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:32,691 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2023-08-30 22:50:32,691 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2023-08-30 22:50:32,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 219 events. 126/219 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 683 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2023-08-30 22:50:32,697 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2023-08-30 22:50:32,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2023-08-30 22:50:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 22:50:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 22:50:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2023-08-30 22:50:32,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2023-08-30 22:50:32,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 413 transitions. [2023-08-30 22:50:32,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 413 transitions. [2023-08-30 22:50:32,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:32,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 413 transitions. [2023-08-30 22:50:32,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-08-30 22:50:32,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:50:32,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:50:32,712 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 7 states and 413 transitions. [2023-08-30 22:50:32,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2023-08-30 22:50:32,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 344 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 22:50:32,718 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 240 flow [2023-08-30 22:50:32,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-30 22:50:32,719 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 21 predicate places. [2023-08-30 22:50:32,722 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 240 flow [2023-08-30 22:50:32,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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) [2023-08-30 22:50:32,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:32,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:32,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 22:50:32,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:32,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 1 times [2023-08-30 22:50:32,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:32,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376385166] [2023-08-30 22:50:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:32,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:32,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376385166] [2023-08-30 22:50:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376385166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:50:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416938147] [2023-08-30 22:50:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:32,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:50:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:50:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:50:32,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:32,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:50:32,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:32,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:32,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:32,999 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2023-08-30 22:50:32,999 INFO L131 PetriNetUnfolder]: For 777/777 co-relation queries the response was YES. [2023-08-30 22:50:33,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 283 events. 162/283 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 940 event pairs, 20 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1058. Up to 71 conditions per place. [2023-08-30 22:50:33,002 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2023-08-30 22:50:33,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 488 flow [2023-08-30 22:50:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:50:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:50:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-08-30 22:50:33,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737903225806452 [2023-08-30 22:50:33,006 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-08-30 22:50:33,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-08-30 22:50:33,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:33,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-08-30 22:50:33,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:50:33,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:33,015 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:33,015 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 240 flow. Second operand 8 states and 470 transitions. [2023-08-30 22:50:33,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 488 flow [2023-08-30 22:50:33,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 467 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 22:50:33,023 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 346 flow [2023-08-30 22:50:33,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-30 22:50:33,026 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2023-08-30 22:50:33,026 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 346 flow [2023-08-30 22:50:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:50:33,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:33,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:33,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:50:33,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:33,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:33,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 2 times [2023-08-30 22:50:33,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:33,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608872477] [2023-08-30 22:50:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:33,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:33,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:33,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608872477] [2023-08-30 22:50:33,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608872477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:33,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:50:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 22:50:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295237490] [2023-08-30 22:50:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:33,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 22:50:33,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:33,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 22:50:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 22:50:33,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:33,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:50:33,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:33,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:33,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:33,296 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2023-08-30 22:50:33,297 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2023-08-30 22:50:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 926 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1179. Up to 67 conditions per place. [2023-08-30 22:50:33,299 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2023-08-30 22:50:33,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 576 flow [2023-08-30 22:50:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 22:50:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 22:50:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 411 transitions. [2023-08-30 22:50:33,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735023041474654 [2023-08-30 22:50:33,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 411 transitions. [2023-08-30 22:50:33,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 411 transitions. [2023-08-30 22:50:33,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:33,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 411 transitions. [2023-08-30 22:50:33,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.714285714285715) internal successors, (411), 7 states have internal predecessors, (411), 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) [2023-08-30 22:50:33,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:50:33,305 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-08-30 22:50:33,305 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 346 flow. Second operand 7 states and 411 transitions. [2023-08-30 22:50:33,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 576 flow [2023-08-30 22:50:33,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-30 22:50:33,310 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 398 flow [2023-08-30 22:50:33,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-08-30 22:50:33,311 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2023-08-30 22:50:33,312 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 398 flow [2023-08-30 22:50:33,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:50:33,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:33,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:50:33,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:33,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1494024432, now seen corresponding path program 3 times [2023-08-30 22:50:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:33,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499562070] [2023-08-30 22:50:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:33,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:33,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499562070] [2023-08-30 22:50:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499562070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:33,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321852348] [2023-08-30 22:50:33,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:50:33,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:33,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:33,409 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) [2023-08-30 22:50:33,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 22:50:33,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 22:50:33,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:33,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 22:50:33,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:33,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:33,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321852348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:33,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 22:50:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873728456] [2023-08-30 22:50:33,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:33,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 22:50:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:33,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 22:50:33,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-30 22:50:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:33,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-08-30 22:50:33,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:33,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:34,144 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2023-08-30 22:50:34,147 INFO L131 PetriNetUnfolder]: For 2205/2205 co-relation queries the response was YES. [2023-08-30 22:50:34,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 351 events. 202/351 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1197 event pairs, 18 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1647. Up to 87 conditions per place. [2023-08-30 22:50:34,150 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 34 selfloop transitions, 36 changer transitions 22/92 dead transitions. [2023-08-30 22:50:34,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 958 flow [2023-08-30 22:50:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 22:50:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 22:50:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 816 transitions. [2023-08-30 22:50:34,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2023-08-30 22:50:34,154 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 816 transitions. [2023-08-30 22:50:34,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 816 transitions. [2023-08-30 22:50:34,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:34,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 816 transitions. [2023-08-30 22:50:34,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.285714285714285) internal successors, (816), 14 states have internal predecessors, (816), 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) [2023-08-30 22:50:34,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 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) [2023-08-30 22:50:34,162 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 124.0) internal successors, (1860), 15 states have internal predecessors, (1860), 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) [2023-08-30 22:50:34,162 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 398 flow. Second operand 14 states and 816 transitions. [2023-08-30 22:50:34,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 958 flow [2023-08-30 22:50:34,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 893 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-30 22:50:34,181 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 701 flow [2023-08-30 22:50:34,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=701, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-30 22:50:34,184 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 47 predicate places. [2023-08-30 22:50:34,184 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 701 flow [2023-08-30 22:50:34,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.916666666666664) internal successors, (659), 12 states have internal predecessors, (659), 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) [2023-08-30 22:50:34,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:34,185 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:34,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:34,390 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,SelfDestructingSolverStorable5 [2023-08-30 22:50:34,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:34,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 976616748, now seen corresponding path program 4 times [2023-08-30 22:50:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856648366] [2023-08-30 22:50:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:34,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:34,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856648366] [2023-08-30 22:50:34,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856648366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:34,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010612588] [2023-08-30 22:50:34,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:50:34,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:34,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:34,530 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) [2023-08-30 22:50:34,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 22:50:34,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:50:34,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:34,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 22:50:34,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:34,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010612588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:34,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 22:50:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040446008] [2023-08-30 22:50:34,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:34,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:50:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:50:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:50:34,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:34,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 701 flow. Second operand has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 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) [2023-08-30 22:50:34,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:34,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:34,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:35,127 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2023-08-30 22:50:35,127 INFO L131 PetriNetUnfolder]: For 4313/4313 co-relation queries the response was YES. [2023-08-30 22:50:35,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 463 events. 258/463 cut-off events. For 4313/4313 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1664 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2411. Up to 237 conditions per place. [2023-08-30 22:50:35,131 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2023-08-30 22:50:35,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 118 transitions, 1469 flow [2023-08-30 22:50:35,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 22:50:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 22:50:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 931 transitions. [2023-08-30 22:50:35,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692540322580645 [2023-08-30 22:50:35,135 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 931 transitions. [2023-08-30 22:50:35,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 931 transitions. [2023-08-30 22:50:35,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:35,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 931 transitions. [2023-08-30 22:50:35,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.1875) internal successors, (931), 16 states have internal predecessors, (931), 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) [2023-08-30 22:50:35,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-08-30 22:50:35,141 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 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) [2023-08-30 22:50:35,141 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 701 flow. Second operand 16 states and 931 transitions. [2023-08-30 22:50:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 118 transitions, 1469 flow [2023-08-30 22:50:35,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 1110 flow, removed 167 selfloop flow, removed 5 redundant places. [2023-08-30 22:50:35,161 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 781 flow [2023-08-30 22:50:35,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=781, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2023-08-30 22:50:35,162 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 67 predicate places. [2023-08-30 22:50:35,162 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 781 flow [2023-08-30 22:50:35,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.8125) internal successors, (877), 16 states have internal predecessors, (877), 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) [2023-08-30 22:50:35,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:35,163 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:35,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 22:50:35,368 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,SelfDestructingSolverStorable6 [2023-08-30 22:50:35,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:35,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash 921314670, now seen corresponding path program 5 times [2023-08-30 22:50:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678128233] [2023-08-30 22:50:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:35,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:35,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:35,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678128233] [2023-08-30 22:50:35,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678128233] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:35,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127404386] [2023-08-30 22:50:35,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 22:50:35,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:35,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:35,526 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) [2023-08-30 22:50:35,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 22:50:35,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-30 22:50:35,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:35,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 22:50:35,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:35,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:35,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127404386] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:35,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 22:50:35,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130761146] [2023-08-30 22:50:35,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:35,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 22:50:35,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 22:50:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-30 22:50:35,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:35,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 781 flow. Second operand has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 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) [2023-08-30 22:50:35,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:35,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:35,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:36,356 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2023-08-30 22:50:36,357 INFO L131 PetriNetUnfolder]: For 12149/12149 co-relation queries the response was YES. [2023-08-30 22:50:36,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4019 conditions, 755 events. 412/755 cut-off events. For 12149/12149 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3349 event pairs, 42 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3976. Up to 227 conditions per place. [2023-08-30 22:50:36,362 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2023-08-30 22:50:36,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2101 flow [2023-08-30 22:50:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 22:50:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 22:50:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1280 transitions. [2023-08-30 22:50:36,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46920821114369504 [2023-08-30 22:50:36,367 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1280 transitions. [2023-08-30 22:50:36,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1280 transitions. [2023-08-30 22:50:36,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:36,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1280 transitions. [2023-08-30 22:50:36,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.18181818181818) internal successors, (1280), 22 states have internal predecessors, (1280), 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) [2023-08-30 22:50:36,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-08-30 22:50:36,375 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 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) [2023-08-30 22:50:36,375 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 781 flow. Second operand 22 states and 1280 transitions. [2023-08-30 22:50:36,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2101 flow [2023-08-30 22:50:36,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 182 transitions, 1980 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-30 22:50:36,405 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1490 flow [2023-08-30 22:50:36,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1490, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2023-08-30 22:50:36,406 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 98 predicate places. [2023-08-30 22:50:36,406 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1490 flow [2023-08-30 22:50:36,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 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) [2023-08-30 22:50:36,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:36,407 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:36,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:36,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:36,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:36,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:36,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1348503086, now seen corresponding path program 6 times [2023-08-30 22:50:36,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:36,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307146839] [2023-08-30 22:50:36,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:36,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307146839] [2023-08-30 22:50:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307146839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210682858] [2023-08-30 22:50:36,740 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 22:50:36,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:36,745 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) [2023-08-30 22:50:36,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 22:50:36,815 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 22:50:36,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:36,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 22:50:36,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:36,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:36,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210682858] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:36,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:36,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 22:50:36,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136785981] [2023-08-30 22:50:36,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:36,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:50:36,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:36,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:50:36,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:50:36,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:36,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1490 flow. Second operand has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 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) [2023-08-30 22:50:36,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:36,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:37,469 INFO L130 PetriNetUnfolder]: 612/1111 cut-off events. [2023-08-30 22:50:37,469 INFO L131 PetriNetUnfolder]: For 36655/36655 co-relation queries the response was YES. [2023-08-30 22:50:37,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7830 conditions, 1111 events. 612/1111 cut-off events. For 36655/36655 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5394 event pairs, 28 based on Foata normal form. 36/1147 useless extension candidates. Maximal degree in co-relation 7772. Up to 355 conditions per place. [2023-08-30 22:50:37,480 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 71 selfloop transitions, 134 changer transitions 41/246 dead transitions. [2023-08-30 22:50:37,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 246 transitions, 3764 flow [2023-08-30 22:50:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 22:50:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 22:50:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1571 transitions. [2023-08-30 22:50:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692353643966547 [2023-08-30 22:50:37,485 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1571 transitions. [2023-08-30 22:50:37,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1571 transitions. [2023-08-30 22:50:37,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:37,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1571 transitions. [2023-08-30 22:50:37,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.18518518518518) internal successors, (1571), 27 states have internal predecessors, (1571), 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) [2023-08-30 22:50:37,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 124.0) internal successors, (3472), 28 states have internal predecessors, (3472), 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) [2023-08-30 22:50:37,496 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 124.0) internal successors, (3472), 28 states have internal predecessors, (3472), 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) [2023-08-30 22:50:37,496 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1490 flow. Second operand 27 states and 1571 transitions. [2023-08-30 22:50:37,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 246 transitions, 3764 flow [2023-08-30 22:50:37,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 3448 flow, removed 148 selfloop flow, removed 4 redundant places. [2023-08-30 22:50:37,566 INFO L231 Difference]: Finished difference. Result has 153 places, 158 transitions, 2642 flow [2023-08-30 22:50:37,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2642, PETRI_PLACES=153, PETRI_TRANSITIONS=158} [2023-08-30 22:50:37,567 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2023-08-30 22:50:37,567 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 158 transitions, 2642 flow [2023-08-30 22:50:37,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.75) internal successors, (876), 16 states have internal predecessors, (876), 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) [2023-08-30 22:50:37,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:37,568 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:37,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 22:50:37,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:37,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:37,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1579002867, now seen corresponding path program 7 times [2023-08-30 22:50:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:37,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722893517] [2023-08-30 22:50:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:37,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722893517] [2023-08-30 22:50:37,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722893517] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859682942] [2023-08-30 22:50:37,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 22:50:37,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:37,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:37,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:37,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 22:50:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 22:50:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:38,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:50:38,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859682942] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:38,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:38,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-08-30 22:50:38,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969651396] [2023-08-30 22:50:38,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:38,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:50:38,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:38,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:50:38,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:50:38,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:38,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 158 transitions, 2642 flow. Second operand has 16 states, 16 states have (on average 54.875) internal successors, (878), 16 states have internal predecessors, (878), 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) [2023-08-30 22:50:38,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:38,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:38,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:38,758 INFO L130 PetriNetUnfolder]: 716/1303 cut-off events. [2023-08-30 22:50:38,758 INFO L131 PetriNetUnfolder]: For 72224/72224 co-relation queries the response was YES. [2023-08-30 22:50:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11671 conditions, 1303 events. 716/1303 cut-off events. For 72224/72224 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6500 event pairs, 21 based on Foata normal form. 28/1331 useless extension candidates. Maximal degree in co-relation 11599. Up to 426 conditions per place. [2023-08-30 22:50:38,773 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 63 selfloop transitions, 160 changer transitions 44/267 dead transitions. [2023-08-30 22:50:38,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 267 transitions, 5377 flow [2023-08-30 22:50:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 22:50:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 22:50:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1454 transitions. [2023-08-30 22:50:38,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46903225806451615 [2023-08-30 22:50:38,778 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1454 transitions. [2023-08-30 22:50:38,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1454 transitions. [2023-08-30 22:50:38,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:38,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1454 transitions. [2023-08-30 22:50:38,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.16) internal successors, (1454), 25 states have internal predecessors, (1454), 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) [2023-08-30 22:50:38,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 124.0) internal successors, (3224), 26 states have internal predecessors, (3224), 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) [2023-08-30 22:50:38,788 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 124.0) internal successors, (3224), 26 states have internal predecessors, (3224), 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) [2023-08-30 22:50:38,788 INFO L175 Difference]: Start difference. First operand has 153 places, 158 transitions, 2642 flow. Second operand 25 states and 1454 transitions. [2023-08-30 22:50:38,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 267 transitions, 5377 flow [2023-08-30 22:50:38,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 267 transitions, 4062 flow, removed 628 selfloop flow, removed 11 redundant places. [2023-08-30 22:50:38,993 INFO L231 Difference]: Finished difference. Result has 176 places, 192 transitions, 3185 flow [2023-08-30 22:50:38,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3185, PETRI_PLACES=176, PETRI_TRANSITIONS=192} [2023-08-30 22:50:38,994 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 158 predicate places. [2023-08-30 22:50:38,994 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 192 transitions, 3185 flow [2023-08-30 22:50:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 54.875) internal successors, (878), 16 states have internal predecessors, (878), 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) [2023-08-30 22:50:38,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:38,995 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:39,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 22:50:39,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:39,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash -2078744859, now seen corresponding path program 8 times [2023-08-30 22:50:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:39,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095599632] [2023-08-30 22:50:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:39,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:39,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:39,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095599632] [2023-08-30 22:50:39,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095599632] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:39,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265798186] [2023-08-30 22:50:39,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:50:39,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:39,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:39,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:39,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 22:50:39,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:50:39,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:39,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 22:50:39,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:39,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:50:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265798186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:50:39,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:50:39,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 22:50:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42819048] [2023-08-30 22:50:39,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:50:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 22:50:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 22:50:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-08-30 22:50:39,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 124 [2023-08-30 22:50:39,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 192 transitions, 3185 flow. Second operand has 26 states, 26 states have (on average 54.42307692307692) internal successors, (1415), 26 states have internal predecessors, (1415), 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) [2023-08-30 22:50:39,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:39,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 124 [2023-08-30 22:50:39,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:40,522 INFO L130 PetriNetUnfolder]: 756/1371 cut-off events. [2023-08-30 22:50:40,522 INFO L131 PetriNetUnfolder]: For 67219/67219 co-relation queries the response was YES. [2023-08-30 22:50:40,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11832 conditions, 1371 events. 756/1371 cut-off events. For 67219/67219 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6842 event pairs, 28 based on Foata normal form. 12/1383 useless extension candidates. Maximal degree in co-relation 11752. Up to 446 conditions per place. [2023-08-30 22:50:40,538 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 70 selfloop transitions, 172 changer transitions 50/292 dead transitions. [2023-08-30 22:50:40,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 292 transitions, 5349 flow [2023-08-30 22:50:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 22:50:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 22:50:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1624 transitions. [2023-08-30 22:50:40,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-08-30 22:50:40,543 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1624 transitions. [2023-08-30 22:50:40,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1624 transitions. [2023-08-30 22:50:40,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:40,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1624 transitions. [2023-08-30 22:50:40,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 58.0) internal successors, (1624), 28 states have internal predecessors, (1624), 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) [2023-08-30 22:50:40,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 124.0) internal successors, (3596), 29 states have internal predecessors, (3596), 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) [2023-08-30 22:50:40,556 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 124.0) internal successors, (3596), 29 states have internal predecessors, (3596), 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) [2023-08-30 22:50:40,556 INFO L175 Difference]: Start difference. First operand has 176 places, 192 transitions, 3185 flow. Second operand 28 states and 1624 transitions. [2023-08-30 22:50:40,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 292 transitions, 5349 flow [2023-08-30 22:50:40,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 292 transitions, 4886 flow, removed 203 selfloop flow, removed 8 redundant places. [2023-08-30 22:50:40,773 INFO L231 Difference]: Finished difference. Result has 201 places, 202 transitions, 3565 flow [2023-08-30 22:50:40,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3565, PETRI_PLACES=201, PETRI_TRANSITIONS=202} [2023-08-30 22:50:40,774 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 183 predicate places. [2023-08-30 22:50:40,774 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 202 transitions, 3565 flow [2023-08-30 22:50:40,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 54.42307692307692) internal successors, (1415), 26 states have internal predecessors, (1415), 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) [2023-08-30 22:50:40,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:50:40,775 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:50:40,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:40,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:40,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 22:50:40,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:50:40,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2108826170, now seen corresponding path program 9 times [2023-08-30 22:50:40,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:50:40,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850681515] [2023-08-30 22:50:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:50:40,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:50:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:50:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:41,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:50:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850681515] [2023-08-30 22:50:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850681515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:50:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231890914] [2023-08-30 22:50:41,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:50:41,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:50:41,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:50:41,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 22:50:41,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 22:50:41,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:50:41,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 22:50:41,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:50:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:50:41,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 22:50:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231890914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:50:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 22:50:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-30 22:50:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660403899] [2023-08-30 22:50:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:50:41,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 22:50:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:50:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 22:50:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-30 22:50:41,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 124 [2023-08-30 22:50:41,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 202 transitions, 3565 flow. Second operand has 8 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 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) [2023-08-30 22:50:41,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:50:41,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 124 [2023-08-30 22:50:41,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:50:41,850 INFO L130 PetriNetUnfolder]: 1723/2880 cut-off events. [2023-08-30 22:50:41,850 INFO L131 PetriNetUnfolder]: For 149104/149104 co-relation queries the response was YES. [2023-08-30 22:50:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21950 conditions, 2880 events. 1723/2880 cut-off events. For 149104/149104 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16476 event pairs, 57 based on Foata normal form. 265/3145 useless extension candidates. Maximal degree in co-relation 21872. Up to 1755 conditions per place. [2023-08-30 22:50:41,876 INFO L137 encePairwiseOnDemand]: 121/124 looper letters, 0 selfloop transitions, 0 changer transitions 566/566 dead transitions. [2023-08-30 22:50:41,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 566 transitions, 10082 flow [2023-08-30 22:50:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:50:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:50:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 505 transitions. [2023-08-30 22:50:41,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5090725806451613 [2023-08-30 22:50:41,878 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 505 transitions. [2023-08-30 22:50:41,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 505 transitions. [2023-08-30 22:50:41,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:50:41,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 505 transitions. [2023-08-30 22:50:41,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 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) [2023-08-30 22:50:41,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:41,881 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-08-30 22:50:41,882 INFO L175 Difference]: Start difference. First operand has 201 places, 202 transitions, 3565 flow. Second operand 8 states and 505 transitions. [2023-08-30 22:50:41,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 566 transitions, 10082 flow [2023-08-30 22:50:42,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 566 transitions, 8941 flow, removed 91 selfloop flow, removed 27 redundant places. [2023-08-30 22:50:42,099 INFO L231 Difference]: Finished difference. Result has 179 places, 0 transitions, 0 flow [2023-08-30 22:50:42,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=179, PETRI_TRANSITIONS=0} [2023-08-30 22:50:42,101 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 161 predicate places. [2023-08-30 22:50:42,101 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 0 transitions, 0 flow [2023-08-30 22:50:42,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.375) internal successors, (467), 8 states have internal predecessors, (467), 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) [2023-08-30 22:50:42,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 22:50:42,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 22:50:42,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 22:50:42,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 22:50:42,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:50:42,314 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1] [2023-08-30 22:50:42,316 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 22:50:42,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 22:50:42,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:50:42 BasicIcfg [2023-08-30 22:50:42,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 22:50:42,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 22:50:42,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 22:50:42,320 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 22:50:42,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:50:29" (3/4) ... [2023-08-30 22:50:42,323 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 22:50:42,327 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 22:50:42,327 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 22:50:42,330 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 22:50:42,330 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 22:50:42,330 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 22:50:42,330 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 22:50:42,353 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 22:50:42,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 22:50:42,353 INFO L158 Benchmark]: Toolchain (without parser) took 13648.71ms. Allocated memory was 86.0MB in the beginning and 266.3MB in the end (delta: 180.4MB). Free memory was 60.8MB in the beginning and 103.1MB in the end (delta: -42.3MB). Peak memory consumption was 138.0MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,353 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 22:50:42,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.88ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 61.1MB in the end (delta: -478.6kB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.13ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,354 INFO L158 Benchmark]: Boogie Preprocessor took 49.14ms. Allocated memory is still 86.0MB. Free memory was 59.4MB in the beginning and 57.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,354 INFO L158 Benchmark]: RCFGBuilder took 385.41ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 45.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,354 INFO L158 Benchmark]: TraceAbstraction took 12649.49ms. Allocated memory was 86.0MB in the beginning and 266.3MB in the end (delta: 180.4MB). Free memory was 44.7MB in the beginning and 106.0MB in the end (delta: -61.2MB). Peak memory consumption was 174.8MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,355 INFO L158 Benchmark]: Witness Printer took 32.79ms. Allocated memory is still 266.3MB. Free memory was 104.9MB in the beginning and 103.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 22:50:42,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.88ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 61.1MB in the end (delta: -478.6kB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.13ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.14ms. Allocated memory is still 86.0MB. Free memory was 59.4MB in the beginning and 57.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.41ms. Allocated memory is still 86.0MB. Free memory was 57.8MB in the beginning and 45.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12649.49ms. Allocated memory was 86.0MB in the beginning and 266.3MB in the end (delta: 180.4MB). Free memory was 44.7MB in the beginning and 106.0MB in the end (delta: -61.2MB). Peak memory consumption was 174.8MB. Max. memory is 16.1GB. * Witness Printer took 32.79ms. Allocated memory is still 266.3MB. Free memory was 104.9MB in the beginning and 103.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.6s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1735 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1663 mSDsluCounter, 376 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 369 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2300 IncrementalHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 7 mSDtfsCounter, 2300 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1784 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3565occurred in iteration=11, InterpolantAutomatonStates: 172, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1243 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1015 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 57/203 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 22:50:42,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE