./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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 ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:27:02,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:27:02,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:27:02,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:27:02,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:27:02,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:27:02,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:27:02,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:27:02,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:27:02,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:27:02,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:27:02,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:27:02,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:27:02,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:27:02,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:27:02,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:27:02,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:27:02,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:27:02,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:27:02,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:27:02,763 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:27:02,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:27:02,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:27:02,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:27:02,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:27:02,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:27:02,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:27:02,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:27:02,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:27:02,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:27:02,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:27:02,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:27:02,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:27:02,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:27:02,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:27:02,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:27:02,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:27:02,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:27:02,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:27:02,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:27:02,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:27:02,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:27:02,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:27:02,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:27:02,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:27:02,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:27:02,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:27:02,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:27:02,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:27:02,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:27:02,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:27:02,805 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:27:02,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:27:02,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:27:02,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:27:02,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:27:02,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:27:02,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:27:02,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:27:02,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:27:02,807 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:27:02,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:27:02,808 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:27:02,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:27:02,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:27:02,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:27:02,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:27:02,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:27:02,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:27:02,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:27:02,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:27:02,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:27:02,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:27:02,810 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:27:02,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:27:02,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:27:02,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-07-12 10:27:02,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:27:03,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:27:03,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:27:03,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:27:03,003 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:27:03,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-07-12 10:27:03,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17de7e268/5debd50905e040de96d47a387384dfaf/FLAG178019ba2 [2022-07-12 10:27:03,421 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:27:03,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-07-12 10:27:03,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17de7e268/5debd50905e040de96d47a387384dfaf/FLAG178019ba2 [2022-07-12 10:27:03,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17de7e268/5debd50905e040de96d47a387384dfaf [2022-07-12 10:27:03,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:27:03,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:27:03,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:27:03,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:27:03,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:27:03,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:27:03" (1/1) ... [2022-07-12 10:27:03,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c17bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:03, skipping insertion in model container [2022-07-12 10:27:03,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:27:03" (1/1) ... [2022-07-12 10:27:03,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:27:03,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:27:04,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-07-12 10:27:04,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:27:04,021 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:27:04,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-07-12 10:27:04,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:27:04,047 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:27:04,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04 WrapperNode [2022-07-12 10:27:04,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:27:04,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:27:04,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:27:04,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:27:04,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,076 INFO L137 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-07-12 10:27:04,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:27:04,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:27:04,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:27:04,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:27:04,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:27:04,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:27:04,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:27:04,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:27:04,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (1/1) ... [2022-07-12 10:27:04,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:27:04,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:04,137 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) [2022-07-12 10:27:04,154 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 [2022-07-12 10:27:04,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:27:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:27:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:27:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:27:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:27:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:27:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:27:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:27:04,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:27:04,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:27:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:27:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:27:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:27:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:27:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:27:04,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:27:04,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:27:04,169 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:27:04,247 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:27:04,248 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:27:04,483 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:27:04,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:27:04,527 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:27:04,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:27:04 BoogieIcfgContainer [2022-07-12 10:27:04,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:27:04,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:27:04,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:27:04,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:27:04,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:27:03" (1/3) ... [2022-07-12 10:27:04,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278f483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:27:04, skipping insertion in model container [2022-07-12 10:27:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:27:04" (2/3) ... [2022-07-12 10:27:04,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278f483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:27:04, skipping insertion in model container [2022-07-12 10:27:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:27:04" (3/3) ... [2022-07-12 10:27:04,540 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-07-12 10:27:04,544 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:27:04,550 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:27:04,550 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:27:04,550 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:27:04,621 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:27:04,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-07-12 10:27:04,753 INFO L129 PetriNetUnfolder]: 7/183 cut-off events. [2022-07-12 10:27:04,754 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:27:04,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-07-12 10:27:04,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-07-12 10:27:04,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-07-12 10:27:04,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:27:04,773 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12958534, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b398487 [2022-07-12 10:27:04,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:27:04,803 INFO L129 PetriNetUnfolder]: 7/171 cut-off events. [2022-07-12 10:27:04,807 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:27:04,807 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:04,808 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:04,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:04,812 INFO L85 PathProgramCache]: Analyzing trace with hash 376216853, now seen corresponding path program 1 times [2022-07-12 10:27:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441319673] [2022-07-12 10:27:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:05,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441319673] [2022-07-12 10:27:05,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441319673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:05,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:05,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:27:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111601622] [2022-07-12 10:27:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:05,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:27:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:27:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:27:05,240 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 186 [2022-07-12 10:27:05,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 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) [2022-07-12 10:27:05,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:05,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 186 [2022-07-12 10:27:05,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:05,592 INFO L129 PetriNetUnfolder]: 312/879 cut-off events. [2022-07-12 10:27:05,592 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-07-12 10:27:05,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 879 events. 312/879 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4468 event pairs, 311 based on Foata normal form. 7/875 useless extension candidates. Maximal degree in co-relation 1307. Up to 559 conditions per place. [2022-07-12 10:27:05,602 INFO L132 encePairwiseOnDemand]: 169/186 looper letters, 51 selfloop transitions, 6 changer transitions 15/180 dead transitions. [2022-07-12 10:27:05,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 180 transitions, 522 flow [2022-07-12 10:27:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:27:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:27:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1292 transitions. [2022-07-12 10:27:05,620 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6946236559139785 [2022-07-12 10:27:05,621 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1292 transitions. [2022-07-12 10:27:05,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1292 transitions. [2022-07-12 10:27:05,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:05,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1292 transitions. [2022-07-12 10:27:05,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.2) internal successors, (1292), 10 states have internal predecessors, (1292), 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) [2022-07-12 10:27:05,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-07-12 10:27:05,640 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 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) [2022-07-12 10:27:05,641 INFO L186 Difference]: Start difference. First operand has 175 places, 172 transitions, 362 flow. Second operand 10 states and 1292 transitions. [2022-07-12 10:27:05,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 180 transitions, 522 flow [2022-07-12 10:27:05,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 180 transitions, 510 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:27:05,649 INFO L242 Difference]: Finished difference. Result has 182 places, 162 transitions, 354 flow [2022-07-12 10:27:05,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=182, PETRI_TRANSITIONS=162} [2022-07-12 10:27:05,655 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-07-12 10:27:05,655 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 162 transitions, 354 flow [2022-07-12 10:27:05,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 127.125) internal successors, (1017), 8 states have internal predecessors, (1017), 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) [2022-07-12 10:27:05,656 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:05,656 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:27:05,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1818492643, now seen corresponding path program 1 times [2022-07-12 10:27:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:05,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498939330] [2022-07-12 10:27:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:05,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:05,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498939330] [2022-07-12 10:27:05,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498939330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:05,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:05,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:27:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335746083] [2022-07-12 10:27:05,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:05,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:27:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:05,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:27:05,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:27:05,864 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-07-12 10:27:05,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 162 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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) [2022-07-12 10:27:05,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:05,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-07-12 10:27:05,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:06,186 INFO L129 PetriNetUnfolder]: 1031/2232 cut-off events. [2022-07-12 10:27:06,186 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-07-12 10:27:06,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4102 conditions, 2232 events. 1031/2232 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14975 event pairs, 230 based on Foata normal form. 25/2232 useless extension candidates. Maximal degree in co-relation 4007. Up to 511 conditions per place. [2022-07-12 10:27:06,212 INFO L132 encePairwiseOnDemand]: 176/186 looper letters, 91 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2022-07-12 10:27:06,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 240 transitions, 740 flow [2022-07-12 10:27:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:27:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:27:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1442 transitions. [2022-07-12 10:27:06,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8614097968936678 [2022-07-12 10:27:06,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1442 transitions. [2022-07-12 10:27:06,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1442 transitions. [2022-07-12 10:27:06,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:06,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1442 transitions. [2022-07-12 10:27:06,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 160.22222222222223) internal successors, (1442), 9 states have internal predecessors, (1442), 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) [2022-07-12 10:27:06,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 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) [2022-07-12 10:27:06,222 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 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) [2022-07-12 10:27:06,222 INFO L186 Difference]: Start difference. First operand has 182 places, 162 transitions, 354 flow. Second operand 9 states and 1442 transitions. [2022-07-12 10:27:06,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 240 transitions, 740 flow [2022-07-12 10:27:06,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 724 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-12 10:27:06,230 INFO L242 Difference]: Finished difference. Result has 179 places, 176 transitions, 442 flow [2022-07-12 10:27:06,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=442, PETRI_PLACES=179, PETRI_TRANSITIONS=176} [2022-07-12 10:27:06,231 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 4 predicate places. [2022-07-12 10:27:06,231 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 176 transitions, 442 flow [2022-07-12 10:27:06,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 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) [2022-07-12 10:27:06,232 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:06,232 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:06,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:27:06,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1208685837, now seen corresponding path program 2 times [2022-07-12 10:27:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:06,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553778864] [2022-07-12 10:27:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:07,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553778864] [2022-07-12 10:27:07,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553778864] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444486770] [2022-07-12 10:27:07,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:27:07,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:07,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:07,319 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) [2022-07-12 10:27:07,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:27:07,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:27:07,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:27:07,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-12 10:27:07,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:07,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:27:07,492 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:27:07,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:27:07,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-12 10:27:08,112 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:27:08,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-07-12 10:27:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:08,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:27:08,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444486770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:08,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:27:08,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [29] total 44 [2022-07-12 10:27:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078139741] [2022-07-12 10:27:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:08,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:27:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:27:08,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1748, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 10:27:08,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 186 [2022-07-12 10:27:08,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 176 transitions, 442 flow. Second operand has 21 states, 21 states have (on average 95.71428571428571) internal successors, (2010), 21 states have internal predecessors, (2010), 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) [2022-07-12 10:27:08,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:08,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 186 [2022-07-12 10:27:08,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:09,815 INFO L129 PetriNetUnfolder]: 3960/7904 cut-off events. [2022-07-12 10:27:09,816 INFO L130 PetriNetUnfolder]: For 1807/1876 co-relation queries the response was YES. [2022-07-12 10:27:09,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15870 conditions, 7904 events. 3960/7904 cut-off events. For 1807/1876 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 63828 event pairs, 1133 based on Foata normal form. 27/7848 useless extension candidates. Maximal degree in co-relation 15735. Up to 3615 conditions per place. [2022-07-12 10:27:09,850 INFO L132 encePairwiseOnDemand]: 152/186 looper letters, 192 selfloop transitions, 55 changer transitions 9/346 dead transitions. [2022-07-12 10:27:09,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 346 transitions, 1446 flow [2022-07-12 10:27:09,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:27:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:27:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2800 transitions. [2022-07-12 10:27:09,855 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5376344086021505 [2022-07-12 10:27:09,856 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2800 transitions. [2022-07-12 10:27:09,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2800 transitions. [2022-07-12 10:27:09,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:09,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2800 transitions. [2022-07-12 10:27:09,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 100.0) internal successors, (2800), 28 states have internal predecessors, (2800), 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) [2022-07-12 10:27:09,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 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) [2022-07-12 10:27:09,867 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 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) [2022-07-12 10:27:09,867 INFO L186 Difference]: Start difference. First operand has 179 places, 176 transitions, 442 flow. Second operand 28 states and 2800 transitions. [2022-07-12 10:27:09,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 346 transitions, 1446 flow [2022-07-12 10:27:09,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 346 transitions, 1446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:27:09,889 INFO L242 Difference]: Finished difference. Result has 216 places, 219 transitions, 787 flow [2022-07-12 10:27:09,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=787, PETRI_PLACES=216, PETRI_TRANSITIONS=219} [2022-07-12 10:27:09,892 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 41 predicate places. [2022-07-12 10:27:09,892 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 219 transitions, 787 flow [2022-07-12 10:27:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 95.71428571428571) internal successors, (2010), 21 states have internal predecessors, (2010), 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) [2022-07-12 10:27:09,893 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:09,894 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:09,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:27:10,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:10,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1836918995, now seen corresponding path program 3 times [2022-07-12 10:27:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:10,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381861919] [2022-07-12 10:27:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:11,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:11,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381861919] [2022-07-12 10:27:11,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381861919] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:11,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699164917] [2022-07-12 10:27:11,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:27:11,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:11,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:11,044 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) [2022-07-12 10:27:11,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:27:11,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-12 10:27:11,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:27:11,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:27:11,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:11,508 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:27:11,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-07-12 10:27:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:11,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:27:11,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699164917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:11,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:27:11,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26] total 34 [2022-07-12 10:27:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593763388] [2022-07-12 10:27:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:11,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:27:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:27:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 10:27:11,536 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-07-12 10:27:11,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 219 transitions, 787 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-07-12 10:27:11,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:11,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-07-12 10:27:11,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:12,663 INFO L129 PetriNetUnfolder]: 4105/8939 cut-off events. [2022-07-12 10:27:12,664 INFO L130 PetriNetUnfolder]: For 5405/5497 co-relation queries the response was YES. [2022-07-12 10:27:12,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23165 conditions, 8939 events. 4105/8939 cut-off events. For 5405/5497 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 80115 event pairs, 1197 based on Foata normal form. 24/8775 useless extension candidates. Maximal degree in co-relation 23121. Up to 4934 conditions per place. [2022-07-12 10:27:12,797 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 131 selfloop transitions, 55 changer transitions 4/317 dead transitions. [2022-07-12 10:27:12,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 317 transitions, 1572 flow [2022-07-12 10:27:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:27:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:27:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1888 transitions. [2022-07-12 10:27:12,801 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6767025089605735 [2022-07-12 10:27:12,801 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1888 transitions. [2022-07-12 10:27:12,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1888 transitions. [2022-07-12 10:27:12,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:12,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1888 transitions. [2022-07-12 10:27:12,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.86666666666666) internal successors, (1888), 15 states have internal predecessors, (1888), 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) [2022-07-12 10:27:12,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 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) [2022-07-12 10:27:12,809 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 186.0) internal successors, (2976), 16 states have internal predecessors, (2976), 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) [2022-07-12 10:27:12,810 INFO L186 Difference]: Start difference. First operand has 216 places, 219 transitions, 787 flow. Second operand 15 states and 1888 transitions. [2022-07-12 10:27:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 317 transitions, 1572 flow [2022-07-12 10:27:12,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 317 transitions, 1536 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-07-12 10:27:12,832 INFO L242 Difference]: Finished difference. Result has 219 places, 267 transitions, 1221 flow [2022-07-12 10:27:12,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1221, PETRI_PLACES=219, PETRI_TRANSITIONS=267} [2022-07-12 10:27:12,834 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 44 predicate places. [2022-07-12 10:27:12,834 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 267 transitions, 1221 flow [2022-07-12 10:27:12,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-07-12 10:27:12,835 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:12,835 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:12,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 10:27:13,049 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,SelfDestructingSolverStorable3 [2022-07-12 10:27:13,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:13,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1042177003, now seen corresponding path program 4 times [2022-07-12 10:27:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:13,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789517643] [2022-07-12 10:27:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:13,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789517643] [2022-07-12 10:27:13,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789517643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:13,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314087349] [2022-07-12 10:27:13,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 10:27:13,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:13,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:13,388 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) [2022-07-12 10:27:13,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:27:13,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 10:27:13,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:27:13,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-12 10:27:13,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:13,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 10:27:14,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:27:14,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:27:14,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:27:14,521 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:27:14,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-07-12 10:27:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:14,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:27:15,997 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:27:15,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2022-07-12 10:27:16,011 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-12 10:27:16,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1622 treesize of output 1501 [2022-07-12 10:27:16,024 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:27:16,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1494 treesize of output 1398 [2022-07-12 10:27:16,036 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:27:16,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1398 treesize of output 1014 [2022-07-12 10:27:16,047 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-12 10:27:16,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1014 treesize of output 822 [2022-07-12 10:27:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:16,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314087349] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:27:16,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:27:16,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 26, 22] total 59 [2022-07-12 10:27:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953969975] [2022-07-12 10:27:16,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:27:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-12 10:27:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-12 10:27:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2892, Unknown=134, NotChecked=0, Total=3422 [2022-07-12 10:27:16,642 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-07-12 10:27:16,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 267 transitions, 1221 flow. Second operand has 59 states, 59 states have (on average 92.42372881355932) internal successors, (5453), 59 states have internal predecessors, (5453), 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) [2022-07-12 10:27:16,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:16,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-07-12 10:27:16,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:22,609 INFO L129 PetriNetUnfolder]: 9854/22567 cut-off events. [2022-07-12 10:27:22,609 INFO L130 PetriNetUnfolder]: For 52693/53823 co-relation queries the response was YES. [2022-07-12 10:27:22,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79859 conditions, 22567 events. 9854/22567 cut-off events. For 52693/53823 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 244930 event pairs, 3462 based on Foata normal form. 87/22119 useless extension candidates. Maximal degree in co-relation 79804. Up to 6582 conditions per place. [2022-07-12 10:27:22,888 INFO L132 encePairwiseOnDemand]: 154/186 looper letters, 441 selfloop transitions, 127 changer transitions 14/687 dead transitions. [2022-07-12 10:27:22,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 687 transitions, 5149 flow [2022-07-12 10:27:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 10:27:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-07-12 10:27:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3913 transitions. [2022-07-12 10:27:22,898 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.51311303435615 [2022-07-12 10:27:22,898 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3913 transitions. [2022-07-12 10:27:22,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3913 transitions. [2022-07-12 10:27:22,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:22,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3913 transitions. [2022-07-12 10:27:22,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 95.4390243902439) internal successors, (3913), 41 states have internal predecessors, (3913), 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) [2022-07-12 10:27:22,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 186.0) internal successors, (7812), 42 states have internal predecessors, (7812), 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) [2022-07-12 10:27:22,915 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 186.0) internal successors, (7812), 42 states have internal predecessors, (7812), 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) [2022-07-12 10:27:22,916 INFO L186 Difference]: Start difference. First operand has 219 places, 267 transitions, 1221 flow. Second operand 41 states and 3913 transitions. [2022-07-12 10:27:22,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 687 transitions, 5149 flow [2022-07-12 10:27:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 687 transitions, 5005 flow, removed 64 selfloop flow, removed 6 redundant places. [2022-07-12 10:27:23,148 INFO L242 Difference]: Finished difference. Result has 274 places, 388 transitions, 2496 flow [2022-07-12 10:27:23,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2496, PETRI_PLACES=274, PETRI_TRANSITIONS=388} [2022-07-12 10:27:23,149 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 99 predicate places. [2022-07-12 10:27:23,149 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 388 transitions, 2496 flow [2022-07-12 10:27:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 92.42372881355932) internal successors, (5453), 59 states have internal predecessors, (5453), 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) [2022-07-12 10:27:23,151 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:23,151 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:23,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:27:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:23,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash 977895683, now seen corresponding path program 5 times [2022-07-12 10:27:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:23,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211426671] [2022-07-12 10:27:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211426671] [2022-07-12 10:27:23,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211426671] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:23,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355440296] [2022-07-12 10:27:23,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 10:27:23,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:23,662 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) [2022-07-12 10:27:23,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:27:23,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:27:23,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:27:23,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-12 10:27:23,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:24,406 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-12 10:27:24,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 13 [2022-07-12 10:27:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:24,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:27:24,870 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:27:24,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 78 [2022-07-12 10:27:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:25,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355440296] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:27:25,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:27:25,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 47 [2022-07-12 10:27:25,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141379094] [2022-07-12 10:27:25,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:27:25,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-12 10:27:25,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-12 10:27:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1893, Unknown=0, NotChecked=0, Total=2162 [2022-07-12 10:27:25,444 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 186 [2022-07-12 10:27:25,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 388 transitions, 2496 flow. Second operand has 47 states, 47 states have (on average 100.70212765957447) internal successors, (4733), 47 states have internal predecessors, (4733), 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) [2022-07-12 10:27:25,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:25,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 186 [2022-07-12 10:27:25,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:35,448 INFO L129 PetriNetUnfolder]: 13671/33171 cut-off events. [2022-07-12 10:27:35,449 INFO L130 PetriNetUnfolder]: For 140550/141819 co-relation queries the response was YES. [2022-07-12 10:27:35,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139267 conditions, 33171 events. 13671/33171 cut-off events. For 140550/141819 co-relation queries the response was YES. Maximal size of possible extension queue 2176. Compared 400149 event pairs, 2950 based on Foata normal form. 201/32661 useless extension candidates. Maximal degree in co-relation 139190. Up to 9348 conditions per place. [2022-07-12 10:27:35,822 INFO L132 encePairwiseOnDemand]: 140/186 looper letters, 638 selfloop transitions, 344 changer transitions 141/1230 dead transitions. [2022-07-12 10:27:35,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1230 transitions, 11619 flow [2022-07-12 10:27:35,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-07-12 10:27:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-07-12 10:27:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 8133 transitions. [2022-07-12 10:27:35,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5605872622001654 [2022-07-12 10:27:35,834 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 8133 transitions. [2022-07-12 10:27:35,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 8133 transitions. [2022-07-12 10:27:35,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:35,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 8133 transitions. [2022-07-12 10:27:35,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 104.26923076923077) internal successors, (8133), 78 states have internal predecessors, (8133), 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) [2022-07-12 10:27:35,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 186.0) internal successors, (14694), 79 states have internal predecessors, (14694), 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) [2022-07-12 10:27:35,862 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 186.0) internal successors, (14694), 79 states have internal predecessors, (14694), 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) [2022-07-12 10:27:35,862 INFO L186 Difference]: Start difference. First operand has 274 places, 388 transitions, 2496 flow. Second operand 78 states and 8133 transitions. [2022-07-12 10:27:35,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1230 transitions, 11619 flow [2022-07-12 10:27:38,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 1230 transitions, 11373 flow, removed 112 selfloop flow, removed 15 redundant places. [2022-07-12 10:27:38,198 INFO L242 Difference]: Finished difference. Result has 365 places, 689 transitions, 6580 flow [2022-07-12 10:27:38,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=6580, PETRI_PLACES=365, PETRI_TRANSITIONS=689} [2022-07-12 10:27:38,199 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 190 predicate places. [2022-07-12 10:27:38,199 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 689 transitions, 6580 flow [2022-07-12 10:27:38,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 100.70212765957447) internal successors, (4733), 47 states have internal predecessors, (4733), 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) [2022-07-12 10:27:38,200 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:38,201 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:38,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:27:38,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:38,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1041545201, now seen corresponding path program 6 times [2022-07-12 10:27:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:38,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754963101] [2022-07-12 10:27:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754963101] [2022-07-12 10:27:38,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754963101] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647873157] [2022-07-12 10:27:38,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-12 10:27:38,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:38,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:38,720 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) [2022-07-12 10:27:38,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:27:38,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-07-12 10:27:38,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:27:38,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:27:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:39,080 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:27:39,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-07-12 10:27:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:27:39,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:27:39,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647873157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:39,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:27:39,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 28 [2022-07-12 10:27:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142994078] [2022-07-12 10:27:39,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:39,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:27:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:27:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:27:39,097 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 186 [2022-07-12 10:27:39,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 689 transitions, 6580 flow. Second operand has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-07-12 10:27:39,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:39,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 186 [2022-07-12 10:27:39,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:46,116 INFO L129 PetriNetUnfolder]: 13434/33063 cut-off events. [2022-07-12 10:27:46,116 INFO L130 PetriNetUnfolder]: For 303732/305819 co-relation queries the response was YES. [2022-07-12 10:27:46,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176210 conditions, 33063 events. 13434/33063 cut-off events. For 303732/305819 co-relation queries the response was YES. Maximal size of possible extension queue 2157. Compared 401600 event pairs, 3468 based on Foata normal form. 312/32640 useless extension candidates. Maximal degree in co-relation 176103. Up to 15741 conditions per place. [2022-07-12 10:27:46,800 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 563 selfloop transitions, 135 changer transitions 44/877 dead transitions. [2022-07-12 10:27:46,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 877 transitions, 10303 flow [2022-07-12 10:27:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:27:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:27:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2010 transitions. [2022-07-12 10:27:46,803 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6754032258064516 [2022-07-12 10:27:46,803 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2010 transitions. [2022-07-12 10:27:46,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2010 transitions. [2022-07-12 10:27:46,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:46,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2010 transitions. [2022-07-12 10:27:46,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 125.625) internal successors, (2010), 16 states have internal predecessors, (2010), 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) [2022-07-12 10:27:46,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 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) [2022-07-12 10:27:46,809 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 186.0) internal successors, (3162), 17 states have internal predecessors, (3162), 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) [2022-07-12 10:27:46,810 INFO L186 Difference]: Start difference. First operand has 365 places, 689 transitions, 6580 flow. Second operand 16 states and 2010 transitions. [2022-07-12 10:27:46,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 877 transitions, 10303 flow [2022-07-12 10:27:52,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 877 transitions, 9518 flow, removed 366 selfloop flow, removed 20 redundant places. [2022-07-12 10:27:52,437 INFO L242 Difference]: Finished difference. Result has 364 places, 739 transitions, 6949 flow [2022-07-12 10:27:52,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5868, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6949, PETRI_PLACES=364, PETRI_TRANSITIONS=739} [2022-07-12 10:27:52,438 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 189 predicate places. [2022-07-12 10:27:52,438 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 739 transitions, 6949 flow [2022-07-12 10:27:52,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 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) [2022-07-12 10:27:52,439 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:52,439 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:52,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 10:27:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:52,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:27:52,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1326818203, now seen corresponding path program 7 times [2022-07-12 10:27:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:52,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821645796] [2022-07-12 10:27:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:52,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:53,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:53,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821645796] [2022-07-12 10:27:53,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821645796] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:27:53,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219910079] [2022-07-12 10:27:53,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-12 10:27:53,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:27:53,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:27:53,070 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) [2022-07-12 10:27:53,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:27:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-12 10:27:53,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:27:53,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-12 10:27:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:53,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:27:53,532 INFO L356 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2022-07-12 10:27:53,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-07-12 10:27:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219910079] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:27:53,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:27:53,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 14] total 33 [2022-07-12 10:27:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515302095] [2022-07-12 10:27:53,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:27:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 10:27:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 10:27:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:27:53,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 186 [2022-07-12 10:27:53,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 739 transitions, 6949 flow. Second operand has 33 states, 33 states have (on average 103.18181818181819) internal successors, (3405), 33 states have internal predecessors, (3405), 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) [2022-07-12 10:27:53,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:53,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 186 [2022-07-12 10:27:53,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:02,196 INFO L129 PetriNetUnfolder]: 13611/34116 cut-off events. [2022-07-12 10:28:02,196 INFO L130 PetriNetUnfolder]: For 370625/373351 co-relation queries the response was YES. [2022-07-12 10:28:02,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188092 conditions, 34116 events. 13611/34116 cut-off events. For 370625/373351 co-relation queries the response was YES. Maximal size of possible extension queue 2205. Compared 420534 event pairs, 4157 based on Foata normal form. 411/33752 useless extension candidates. Maximal degree in co-relation 187951. Up to 9329 conditions per place. [2022-07-12 10:28:02,922 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 571 selfloop transitions, 245 changer transitions 41/966 dead transitions. [2022-07-12 10:28:02,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 966 transitions, 11108 flow [2022-07-12 10:28:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:28:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:28:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2972 transitions. [2022-07-12 10:28:02,926 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5706605222734255 [2022-07-12 10:28:02,926 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2972 transitions. [2022-07-12 10:28:02,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2972 transitions. [2022-07-12 10:28:02,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:02,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2972 transitions. [2022-07-12 10:28:02,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 106.14285714285714) internal successors, (2972), 28 states have internal predecessors, (2972), 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) [2022-07-12 10:28:02,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 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) [2022-07-12 10:28:02,934 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 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) [2022-07-12 10:28:02,934 INFO L186 Difference]: Start difference. First operand has 364 places, 739 transitions, 6949 flow. Second operand 28 states and 2972 transitions. [2022-07-12 10:28:02,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 966 transitions, 11108 flow [2022-07-12 10:28:06,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 966 transitions, 10942 flow, removed 63 selfloop flow, removed 8 redundant places. [2022-07-12 10:28:06,966 INFO L242 Difference]: Finished difference. Result has 385 places, 749 transitions, 7555 flow [2022-07-12 10:28:06,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6832, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7555, PETRI_PLACES=385, PETRI_TRANSITIONS=749} [2022-07-12 10:28:06,970 INFO L279 CegarLoopForPetriNet]: 175 programPoint places, 210 predicate places. [2022-07-12 10:28:06,970 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 749 transitions, 7555 flow [2022-07-12 10:28:06,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 103.18181818181819) internal successors, (3405), 33 states have internal predecessors, (3405), 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) [2022-07-12 10:28:06,990 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:06,990 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:07,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:28:07,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:07,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-12 10:28:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 882928061, now seen corresponding path program 8 times [2022-07-12 10:28:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878546582] [2022-07-12 10:28:07,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:07,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:07,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:07,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878546582] [2022-07-12 10:28:07,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878546582] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:28:07,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157570788] [2022-07-12 10:28:07,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:28:07,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:28:07,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:07,671 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) [2022-07-12 10:28:07,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:28:07,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:28:07,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:28:07,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:28:07,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:28:08,062 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:28:08,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-07-12 10:28:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:28:08,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:28:08,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157570788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:08,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:28:08,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 33 [2022-07-12 10:28:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822652618] [2022-07-12 10:28:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:08,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:28:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:28:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=971, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:28:08,077 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 186 [2022-07-12 10:28:08,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 749 transitions, 7555 flow. Second operand has 13 states, 13 states have (on average 115.84615384615384) internal successors, (1506), 13 states have internal predecessors, (1506), 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) [2022-07-12 10:28:08,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:08,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 186 [2022-07-12 10:28:08,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand