./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 14:34:45,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 14:34:45,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 14:34:45,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 14:34:45,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 14:34:45,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 14:34:45,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 14:34:45,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 14:34:45,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 14:34:45,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 14:34:45,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 14:34:45,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 14:34:45,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 14:34:45,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 14:34:45,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 14:34:45,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 14:34:45,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 14:34:45,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 14:34:45,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 14:34:45,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 14:34:45,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 14:34:45,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 14:34:45,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 14:34:45,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 14:34:45,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 14:34:45,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 14:34:45,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 14:34:45,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 14:34:45,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 14:34:45,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 14:34:45,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 14:34:45,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 14:34:45,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 14:34:45,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 14:34:45,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 14:34:45,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 14:34:45,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 14:34:45,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 14:34:45,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 14:34:45,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 14:34:45,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 14:34:45,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 14:34:45,684 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 14:34:45,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 14:34:45,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 14:34:45,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 14:34:45,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 14:34:45,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 14:34:45,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 14:34:45,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 14:34:45,687 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 14:34:45,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 14:34:45,688 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 14:34:45,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 14:34:45,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 14:34:45,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 14:34:45,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 14:34:45,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 14:34:45,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 14:34:45,690 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 14:34:45,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 14:34:45,690 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 14:34:45,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 14:34:45,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 14:34:45,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 14:34:45,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 14:34:45,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:34:45,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 14:34:45,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 14:34:45,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 14:34:45,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 14:34:45,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 14:34:45,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 14:34:45,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 14:34:45,693 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 14:34:45,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 14:34:45,693 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 14:34:45,693 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 14:34:46,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 14:34:46,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 14:34:46,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 14:34:46,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 14:34:46,044 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 14:34:46,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-09-01 14:34:47,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 14:34:47,448 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 14:34:47,449 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-09-01 14:34:47,455 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af1e8053/fa68429f4e834f0eadd4ee876214ddb7/FLAG1fc8f7679 [2023-09-01 14:34:47,468 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af1e8053/fa68429f4e834f0eadd4ee876214ddb7 [2023-09-01 14:34:47,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 14:34:47,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 14:34:47,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 14:34:47,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 14:34:47,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 14:34:47,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9bec12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47, skipping insertion in model container [2023-09-01 14:34:47,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 14:34:47,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 14:34:47,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-09-01 14:34:47,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:34:47,677 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 14:34:47,695 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2023-09-01 14:34:47,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 14:34:47,706 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:34:47,706 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 14:34:47,712 INFO L208 MainTranslator]: Completed translation [2023-09-01 14:34:47,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47 WrapperNode [2023-09-01 14:34:47,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 14:34:47,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 14:34:47,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 14:34:47,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 14:34:47,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,747 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 124 [2023-09-01 14:34:47,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 14:34:47,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 14:34:47,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 14:34:47,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 14:34:47,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,778 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 14:34:47,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 14:34:47,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 14:34:47,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 14:34:47,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (1/1) ... [2023-09-01 14:34:47,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 14:34:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:34:47,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 14:34:47,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 14:34:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 14:34:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 14:34:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 14:34:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 14:34:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 14:34:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 14:34:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 14:34:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 14:34:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 14:34:47,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 14:34:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 14:34:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 14:34:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 14:34:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 14:34:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 14:34:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 14:34:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 14:34:47,873 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 14:34:48,019 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 14:34:48,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 14:34:48,395 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 14:34:48,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 14:34:48,435 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 14:34:48,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:34:48 BoogieIcfgContainer [2023-09-01 14:34:48,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 14:34:48,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 14:34:48,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 14:34:48,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 14:34:48,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:34:47" (1/3) ... [2023-09-01 14:34:48,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaad0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:34:48, skipping insertion in model container [2023-09-01 14:34:48,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:34:47" (2/3) ... [2023-09-01 14:34:48,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaad0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:34:48, skipping insertion in model container [2023-09-01 14:34:48,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:34:48" (3/3) ... [2023-09-01 14:34:48,446 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-09-01 14:34:48,453 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 14:34:48,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 14:34:48,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 14:34:48,462 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 14:34:48,543 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 14:34:48,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 372 flow [2023-09-01 14:34:48,639 INFO L130 PetriNetUnfolder]: 16/171 cut-off events. [2023-09-01 14:34:48,640 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:34:48,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 16/171 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-09-01 14:34:48,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 372 flow [2023-09-01 14:34:48,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 161 transitions, 340 flow [2023-09-01 14:34:48,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 14:34:48,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 161 transitions, 340 flow [2023-09-01 14:34:48,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 161 transitions, 340 flow [2023-09-01 14:34:48,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 161 transitions, 340 flow [2023-09-01 14:34:48,707 INFO L130 PetriNetUnfolder]: 16/161 cut-off events. [2023-09-01 14:34:48,708 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:34:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 161 events. 16/161 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 132. Up to 3 conditions per place. [2023-09-01 14:34:48,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 1720 [2023-09-01 14:34:53,613 INFO L134 LiptonReduction]: Checked pairs total: 2460 [2023-09-01 14:34:53,614 INFO L136 LiptonReduction]: Total number of compositions: 154 [2023-09-01 14:34:53,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 14:34:53,633 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20397879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 14:34:53,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 14:34:53,640 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2023-09-01 14:34:53,640 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 14:34:53,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:53,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:53,642 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)] === [2023-09-01 14:34:53,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash 290379782, now seen corresponding path program 1 times [2023-09-01 14:34:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:53,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313076380] [2023-09-01 14:34:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:34:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:54,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313076380] [2023-09-01 14:34:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313076380] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:34:54,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:34:54,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 14:34:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896118108] [2023-09-01 14:34:54,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:54,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 14:34:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 14:34:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 14:34:54,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 328 [2023-09-01 14:34:54,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:54,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:54,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 328 [2023-09-01 14:34:54,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:54,850 INFO L130 PetriNetUnfolder]: 853/1153 cut-off events. [2023-09-01 14:34:54,850 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-09-01 14:34:54,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1153 events. 853/1153 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4189 event pairs, 310 based on Foata normal form. 1/690 useless extension candidates. Maximal degree in co-relation 1073. Up to 740 conditions per place. [2023-09-01 14:34:54,860 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 44 selfloop transitions, 5 changer transitions 1/53 dead transitions. [2023-09-01 14:34:54,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 242 flow [2023-09-01 14:34:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 14:34:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 14:34:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 627 transitions. [2023-09-01 14:34:54,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47789634146341464 [2023-09-01 14:34:54,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 627 transitions. [2023-09-01 14:34:54,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 627 transitions. [2023-09-01 14:34:54,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:54,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 627 transitions. [2023-09-01 14:34:54,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:54,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:54,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:54,896 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 76 flow. Second operand 4 states and 627 transitions. [2023-09-01 14:34:54,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 242 flow [2023-09-01 14:34:54,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 14:34:54,904 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 98 flow [2023-09-01 14:34:54,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-09-01 14:34:54,909 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-09-01 14:34:54,909 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 98 flow [2023-09-01 14:34:54,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:54,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:54,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 14:34:54,911 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)] === [2023-09-01 14:34:54,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash 26416036, now seen corresponding path program 1 times [2023-09-01 14:34:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585247809] [2023-09-01 14:34:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:34:55,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585247809] [2023-09-01 14:34:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585247809] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431745794] [2023-09-01 14:34:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:55,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:34:55,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:34:55,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 14:34:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:55,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:34:55,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:34:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:34:55,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:34:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:34:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431745794] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:34:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-09-01 14:34:55,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382150011] [2023-09-01 14:34:55,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:34:55,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:34:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:34:55,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 328 [2023-09-01 14:34:55,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:55,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:55,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 328 [2023-09-01 14:34:55,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:55,667 INFO L130 PetriNetUnfolder]: 1545/2124 cut-off events. [2023-09-01 14:34:55,667 INFO L131 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2023-09-01 14:34:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 2124 events. 1545/2124 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9164 event pairs, 757 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 4470. Up to 1045 conditions per place. [2023-09-01 14:34:55,683 INFO L137 encePairwiseOnDemand]: 323/328 looper letters, 51 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-09-01 14:34:55,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 280 flow [2023-09-01 14:34:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:34:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:34:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-09-01 14:34:55,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46219512195121953 [2023-09-01 14:34:55,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-09-01 14:34:55,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-09-01 14:34:55,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:55,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-09-01 14:34:55,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:55,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:55,696 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:55,696 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 98 flow. Second operand 5 states and 758 transitions. [2023-09-01 14:34:55,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 280 flow [2023-09-01 14:34:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 272 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 14:34:55,699 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 112 flow [2023-09-01 14:34:55,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-09-01 14:34:55,700 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-09-01 14:34:55,700 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 112 flow [2023-09-01 14:34:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:55,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:55,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:55,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 14:34:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:55,908 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)] === [2023-09-01 14:34:55,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash 232148464, now seen corresponding path program 1 times [2023-09-01 14:34:55,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:55,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638509840] [2023-09-01 14:34:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:34:56,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:56,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638509840] [2023-09-01 14:34:56,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638509840] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:34:56,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:34:56,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 14:34:56,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394885528] [2023-09-01 14:34:56,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:56,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:34:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:34:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 14:34:56,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 328 [2023-09-01 14:34:56,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:56,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:56,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 328 [2023-09-01 14:34:56,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:56,370 INFO L130 PetriNetUnfolder]: 1172/1618 cut-off events. [2023-09-01 14:34:56,371 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2023-09-01 14:34:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1618 events. 1172/1618 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6354 event pairs, 521 based on Foata normal form. 67/1175 useless extension candidates. Maximal degree in co-relation 2060. Up to 793 conditions per place. [2023-09-01 14:34:56,378 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 60 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-09-01 14:34:56,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 324 flow [2023-09-01 14:34:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:34:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:34:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 776 transitions. [2023-09-01 14:34:56,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47317073170731705 [2023-09-01 14:34:56,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 776 transitions. [2023-09-01 14:34:56,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 776 transitions. [2023-09-01 14:34:56,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:56,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 776 transitions. [2023-09-01 14:34:56,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:56,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:56,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:56,389 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 112 flow. Second operand 5 states and 776 transitions. [2023-09-01 14:34:56,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 324 flow [2023-09-01 14:34:56,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 319 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 14:34:56,391 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 120 flow [2023-09-01 14:34:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-09-01 14:34:56,392 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-09-01 14:34:56,393 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 120 flow [2023-09-01 14:34:56,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:56,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:56,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 14:34:56,394 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)] === [2023-09-01 14:34:56,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1046469637, now seen corresponding path program 1 times [2023-09-01 14:34:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:56,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974504933] [2023-09-01 14:34:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:34:56,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974504933] [2023-09-01 14:34:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974504933] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607394521] [2023-09-01 14:34:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:56,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:34:56,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:34:56,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 14:34:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:56,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:34:56,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:34:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:34:56,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:34:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 14:34:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607394521] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:56,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:34:56,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-09-01 14:34:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768699038] [2023-09-01 14:34:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:34:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:56,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:34:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:34:56,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:34:56,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:56,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:56,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:34:56,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:57,004 INFO L130 PetriNetUnfolder]: 1052/1471 cut-off events. [2023-09-01 14:34:57,004 INFO L131 PetriNetUnfolder]: For 418/442 co-relation queries the response was YES. [2023-09-01 14:34:57,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3279 conditions, 1471 events. 1052/1471 cut-off events. For 418/442 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6024 event pairs, 377 based on Foata normal form. 24/1116 useless extension candidates. Maximal degree in co-relation 1868. Up to 498 conditions per place. [2023-09-01 14:34:57,014 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 69 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2023-09-01 14:34:57,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 79 transitions, 388 flow [2023-09-01 14:34:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 14:34:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 14:34:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 896 transitions. [2023-09-01 14:34:57,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2023-09-01 14:34:57,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 896 transitions. [2023-09-01 14:34:57,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 896 transitions. [2023-09-01 14:34:57,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:57,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 896 transitions. [2023-09-01 14:34:57,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.33333333333334) internal successors, (896), 6 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,025 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,026 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 120 flow. Second operand 6 states and 896 transitions. [2023-09-01 14:34:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 79 transitions, 388 flow [2023-09-01 14:34:57,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 14:34:57,028 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 146 flow [2023-09-01 14:34:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-09-01 14:34:57,029 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2023-09-01 14:34:57,030 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 146 flow [2023-09-01 14:34:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:57,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:57,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 14:34:57,240 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 [2023-09-01 14:34:57,241 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)] === [2023-09-01 14:34:57,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -709973367, now seen corresponding path program 1 times [2023-09-01 14:34:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123718392] [2023-09-01 14:34:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 14:34:57,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:57,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123718392] [2023-09-01 14:34:57,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123718392] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:34:57,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:34:57,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 14:34:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652566564] [2023-09-01 14:34:57,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:57,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:34:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:34:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 14:34:57,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 328 [2023-09-01 14:34:57,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:57,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 328 [2023-09-01 14:34:57,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:57,605 INFO L130 PetriNetUnfolder]: 611/889 cut-off events. [2023-09-01 14:34:57,605 INFO L131 PetriNetUnfolder]: For 634/704 co-relation queries the response was YES. [2023-09-01 14:34:57,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 889 events. 611/889 cut-off events. For 634/704 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3455 event pairs, 290 based on Foata normal form. 70/891 useless extension candidates. Maximal degree in co-relation 1681. Up to 614 conditions per place. [2023-09-01 14:34:57,611 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 26 selfloop transitions, 4 changer transitions 30/62 dead transitions. [2023-09-01 14:34:57,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 326 flow [2023-09-01 14:34:57,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:34:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:34:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 769 transitions. [2023-09-01 14:34:57,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689024390243902 [2023-09-01 14:34:57,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 769 transitions. [2023-09-01 14:34:57,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 769 transitions. [2023-09-01 14:34:57,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:57,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 769 transitions. [2023-09-01 14:34:57,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,619 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 146 flow. Second operand 5 states and 769 transitions. [2023-09-01 14:34:57,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 326 flow [2023-09-01 14:34:57,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 322 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 14:34:57,623 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 127 flow [2023-09-01 14:34:57,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-09-01 14:34:57,624 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-09-01 14:34:57,624 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 127 flow [2023-09-01 14:34:57,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:57,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:57,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 14:34:57,625 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)] === [2023-09-01 14:34:57,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash 877946428, now seen corresponding path program 1 times [2023-09-01 14:34:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422946218] [2023-09-01 14:34:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422946218] [2023-09-01 14:34:57,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422946218] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815062698] [2023-09-01 14:34:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:57,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:57,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:34:57,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:34:57,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 14:34:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:57,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:34:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:34:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:57,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:34:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815062698] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:57,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:34:57,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-09-01 14:34:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482401916] [2023-09-01 14:34:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:57,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:34:57,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:34:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:34:57,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:34:57,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:57,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:57,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:34:57,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:58,072 INFO L130 PetriNetUnfolder]: 563/780 cut-off events. [2023-09-01 14:34:58,072 INFO L131 PetriNetUnfolder]: For 486/568 co-relation queries the response was YES. [2023-09-01 14:34:58,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 780 events. 563/780 cut-off events. For 486/568 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2694 event pairs, 237 based on Foata normal form. 124/807 useless extension candidates. Maximal degree in co-relation 2179. Up to 609 conditions per place. [2023-09-01 14:34:58,078 INFO L137 encePairwiseOnDemand]: 323/328 looper letters, 40 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-09-01 14:34:58,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 265 flow [2023-09-01 14:34:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:34:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:34:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2023-09-01 14:34:58,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432926829268293 [2023-09-01 14:34:58,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2023-09-01 14:34:58,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2023-09-01 14:34:58,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:58,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2023-09-01 14:34:58,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,087 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,087 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 127 flow. Second operand 5 states and 727 transitions. [2023-09-01 14:34:58,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 265 flow [2023-09-01 14:34:58,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 235 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-09-01 14:34:58,090 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 121 flow [2023-09-01 14:34:58,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-09-01 14:34:58,091 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-09-01 14:34:58,091 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 121 flow [2023-09-01 14:34:58,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:58,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:58,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 14:34:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:58,298 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)] === [2023-09-01 14:34:58,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash -510812246, now seen corresponding path program 1 times [2023-09-01 14:34:58,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:58,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135402121] [2023-09-01 14:34:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:58,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:58,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135402121] [2023-09-01 14:34:58,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135402121] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745123310] [2023-09-01 14:34:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:58,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:34:58,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:34:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 14:34:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:58,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:34:58,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:34:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:58,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:34:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745123310] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:58,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 14:34:58,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-09-01 14:34:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596861471] [2023-09-01 14:34:58,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 14:34:58,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 14:34:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 14:34:58,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:34:58,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:58,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:34:58,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:58,859 INFO L130 PetriNetUnfolder]: 515/725 cut-off events. [2023-09-01 14:34:58,860 INFO L131 PetriNetUnfolder]: For 631/815 co-relation queries the response was YES. [2023-09-01 14:34:58,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 725 events. 515/725 cut-off events. For 631/815 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2316 event pairs, 191 based on Foata normal form. 184/806 useless extension candidates. Maximal degree in co-relation 2025. Up to 395 conditions per place. [2023-09-01 14:34:58,865 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 39 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-09-01 14:34:58,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 262 flow [2023-09-01 14:34:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 14:34:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 14:34:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 726 transitions. [2023-09-01 14:34:58,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426829268292683 [2023-09-01 14:34:58,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 726 transitions. [2023-09-01 14:34:58,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 726 transitions. [2023-09-01 14:34:58,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:58,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 726 transitions. [2023-09-01 14:34:58,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,874 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 121 flow. Second operand 5 states and 726 transitions. [2023-09-01 14:34:58,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 262 flow [2023-09-01 14:34:58,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 251 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 14:34:58,876 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 144 flow [2023-09-01 14:34:58,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2023-09-01 14:34:58,877 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-09-01 14:34:58,878 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 144 flow [2023-09-01 14:34:58,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:58,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:58,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:58,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 14:34:59,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:59,085 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)] === [2023-09-01 14:34:59,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash -990804847, now seen corresponding path program 1 times [2023-09-01 14:34:59,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:59,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310264057] [2023-09-01 14:34:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 14:34:59,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:59,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310264057] [2023-09-01 14:34:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310264057] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 14:34:59,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 14:34:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 14:34:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888298038] [2023-09-01 14:34:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 14:34:59,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 14:34:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:34:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 14:34:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 14:34:59,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 328 [2023-09-01 14:34:59,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:59,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:34:59,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 328 [2023-09-01 14:34:59,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:34:59,587 INFO L130 PetriNetUnfolder]: 1096/1546 cut-off events. [2023-09-01 14:34:59,587 INFO L131 PetriNetUnfolder]: For 1643/1861 co-relation queries the response was YES. [2023-09-01 14:34:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 1546 events. 1096/1546 cut-off events. For 1643/1861 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5671 event pairs, 121 based on Foata normal form. 294/1662 useless extension candidates. Maximal degree in co-relation 4774. Up to 530 conditions per place. [2023-09-01 14:34:59,598 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 89 selfloop transitions, 17 changer transitions 13/120 dead transitions. [2023-09-01 14:34:59,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 700 flow [2023-09-01 14:34:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:34:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:34:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1433 transitions. [2023-09-01 14:34:59,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854336043360434 [2023-09-01 14:34:59,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1433 transitions. [2023-09-01 14:34:59,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1433 transitions. [2023-09-01 14:34:59,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:34:59,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1433 transitions. [2023-09-01 14:34:59,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.22222222222223) internal successors, (1433), 9 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:59,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:59,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:59,614 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 144 flow. Second operand 9 states and 1433 transitions. [2023-09-01 14:34:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 700 flow [2023-09-01 14:34:59,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 120 transitions, 691 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 14:34:59,620 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 292 flow [2023-09-01 14:34:59,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-09-01 14:34:59,623 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-09-01 14:34:59,623 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 292 flow [2023-09-01 14:34:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.5) internal successors, (909), 6 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:34:59,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:34:59,624 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:34:59,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 14:34:59,625 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)] === [2023-09-01 14:34:59,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:34:59,625 INFO L85 PathProgramCache]: Analyzing trace with hash -849126380, now seen corresponding path program 2 times [2023-09-01 14:34:59,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:34:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603682414] [2023-09-01 14:34:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:34:59,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:34:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:34:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:34:59,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:34:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603682414] [2023-09-01 14:34:59,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603682414] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:34:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698622866] [2023-09-01 14:34:59,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:34:59,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:34:59,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:34:59,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:34:59,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 14:34:59,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:34:59,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:34:59,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:34:59,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:34:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:34:59,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 14:35:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698622866] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:00,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-09-01 14:35:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141964597] [2023-09-01 14:35:00,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:00,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:35:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:35:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:35:00,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:00,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 292 flow. Second operand has 14 states, 14 states have (on average 140.14285714285714) internal successors, (1962), 14 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:00,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:00,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:00,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:00,659 INFO L130 PetriNetUnfolder]: 1332/1958 cut-off events. [2023-09-01 14:35:00,659 INFO L131 PetriNetUnfolder]: For 5356/5834 co-relation queries the response was YES. [2023-09-01 14:35:00,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 1958 events. 1332/1958 cut-off events. For 5356/5834 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8155 event pairs, 468 based on Foata normal form. 492/2442 useless extension candidates. Maximal degree in co-relation 5385. Up to 1028 conditions per place. [2023-09-01 14:35:00,674 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 57 selfloop transitions, 7 changer transitions 52/120 dead transitions. [2023-09-01 14:35:00,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 888 flow [2023-09-01 14:35:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 14:35:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 14:35:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1317 transitions. [2023-09-01 14:35:00,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44613821138211385 [2023-09-01 14:35:00,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1317 transitions. [2023-09-01 14:35:00,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1317 transitions. [2023-09-01 14:35:00,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:00,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1317 transitions. [2023-09-01 14:35:00,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.33333333333334) internal successors, (1317), 9 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:00,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:00,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 328.0) internal successors, (3280), 10 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:00,687 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 292 flow. Second operand 9 states and 1317 transitions. [2023-09-01 14:35:00,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 888 flow [2023-09-01 14:35:00,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 864 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-09-01 14:35:00,704 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 330 flow [2023-09-01 14:35:00,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-09-01 14:35:00,705 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-09-01 14:35:00,705 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 330 flow [2023-09-01 14:35:00,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 140.14285714285714) internal successors, (1962), 14 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:00,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:00,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:00,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:00,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:00,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:00,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash 123513301, now seen corresponding path program 3 times [2023-09-01 14:35:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:00,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093930677] [2023-09-01 14:35:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 14:35:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093930677] [2023-09-01 14:35:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093930677] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503038563] [2023-09-01 14:35:01,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:35:01,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:01,070 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) [2023-09-01 14:35:01,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 14:35:01,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 14:35:01,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:35:01,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:01,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 14:35:01,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 14:35:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503038563] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:01,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-09-01 14:35:01,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486480152] [2023-09-01 14:35:01,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:01,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 14:35:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 14:35:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-09-01 14:35:01,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:01,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 330 flow. Second operand has 15 states, 15 states have (on average 139.73333333333332) internal successors, (2096), 15 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:01,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:01,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:01,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:02,082 INFO L130 PetriNetUnfolder]: 1403/2019 cut-off events. [2023-09-01 14:35:02,083 INFO L131 PetriNetUnfolder]: For 5477/5691 co-relation queries the response was YES. [2023-09-01 14:35:02,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7910 conditions, 2019 events. 1403/2019 cut-off events. For 5477/5691 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7974 event pairs, 432 based on Foata normal form. 302/2309 useless extension candidates. Maximal degree in co-relation 7864. Up to 1316 conditions per place. [2023-09-01 14:35:02,100 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 91 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2023-09-01 14:35:02,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 884 flow [2023-09-01 14:35:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 14:35:02,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 14:35:02,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1153 transitions. [2023-09-01 14:35:02,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43940548780487804 [2023-09-01 14:35:02,104 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1153 transitions. [2023-09-01 14:35:02,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1153 transitions. [2023-09-01 14:35:02,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:02,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1153 transitions. [2023-09-01 14:35:02,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:02,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 328.0) internal successors, (2952), 9 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:02,111 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 328.0) internal successors, (2952), 9 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:02,112 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 330 flow. Second operand 8 states and 1153 transitions. [2023-09-01 14:35:02,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 884 flow [2023-09-01 14:35:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 846 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-09-01 14:35:02,125 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 336 flow [2023-09-01 14:35:02,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-09-01 14:35:02,126 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-09-01 14:35:02,127 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 336 flow [2023-09-01 14:35:02,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 139.73333333333332) internal successors, (2096), 15 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:02,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:02,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:02,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:02,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:02,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:02,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -18919933, now seen corresponding path program 4 times [2023-09-01 14:35:02,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:02,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132664182] [2023-09-01 14:35:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:02,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 14:35:02,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:02,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132664182] [2023-09-01 14:35:02,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132664182] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:02,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550985826] [2023-09-01 14:35:02,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:35:02,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:02,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:02,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:02,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 14:35:02,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:35:02,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:02,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 14:35:02,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 14:35:02,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 14:35:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550985826] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:02,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:02,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-09-01 14:35:02,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933954824] [2023-09-01 14:35:02,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:02,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 14:35:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 14:35:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 14:35:03,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 328 [2023-09-01 14:35:03,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 336 flow. Second operand has 13 states, 13 states have (on average 137.30769230769232) internal successors, (1785), 13 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:03,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:03,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 328 [2023-09-01 14:35:03,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:03,872 INFO L130 PetriNetUnfolder]: 2106/2946 cut-off events. [2023-09-01 14:35:03,872 INFO L131 PetriNetUnfolder]: For 8707/8747 co-relation queries the response was YES. [2023-09-01 14:35:03,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12356 conditions, 2946 events. 2106/2946 cut-off events. For 8707/8747 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11180 event pairs, 61 based on Foata normal form. 78/3024 useless extension candidates. Maximal degree in co-relation 12310. Up to 950 conditions per place. [2023-09-01 14:35:03,931 INFO L137 encePairwiseOnDemand]: 317/328 looper letters, 167 selfloop transitions, 37 changer transitions 0/207 dead transitions. [2023-09-01 14:35:03,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 207 transitions, 1724 flow [2023-09-01 14:35:03,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 14:35:03,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 14:35:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2406 transitions. [2023-09-01 14:35:03,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43149210903873747 [2023-09-01 14:35:03,939 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2406 transitions. [2023-09-01 14:35:03,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2406 transitions. [2023-09-01 14:35:03,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:03,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2406 transitions. [2023-09-01 14:35:03,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 141.52941176470588) internal successors, (2406), 17 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:03,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:03,969 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:03,969 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 336 flow. Second operand 17 states and 2406 transitions. [2023-09-01 14:35:03,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 207 transitions, 1724 flow [2023-09-01 14:35:03,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 207 transitions, 1693 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 14:35:03,997 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 678 flow [2023-09-01 14:35:03,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=678, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-09-01 14:35:03,998 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2023-09-01 14:35:03,998 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 678 flow [2023-09-01 14:35:03,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.30769230769232) internal successors, (1785), 13 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:03,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:03,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:04,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-01 14:35:04,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:04,205 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:04,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash -625333260, now seen corresponding path program 5 times [2023-09-01 14:35:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:04,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135306836] [2023-09-01 14:35:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 14:35:04,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:04,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135306836] [2023-09-01 14:35:04,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135306836] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:04,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800121468] [2023-09-01 14:35:04,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:35:04,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:04,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:04,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:04,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 14:35:04,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 14:35:04,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:04,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:35:04,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 14:35:04,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 14:35:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800121468] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:04,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-09-01 14:35:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980971473] [2023-09-01 14:35:04,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:04,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 14:35:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 14:35:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-09-01 14:35:04,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 328 [2023-09-01 14:35:04,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 678 flow. Second operand has 15 states, 15 states have (on average 149.13333333333333) internal successors, (2237), 15 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:04,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:04,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 328 [2023-09-01 14:35:04,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:06,093 INFO L130 PetriNetUnfolder]: 4224/6102 cut-off events. [2023-09-01 14:35:06,094 INFO L131 PetriNetUnfolder]: For 24215/24301 co-relation queries the response was YES. [2023-09-01 14:35:06,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26553 conditions, 6102 events. 4224/6102 cut-off events. For 24215/24301 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 28704 event pairs, 548 based on Foata normal form. 390/6492 useless extension candidates. Maximal degree in co-relation 26499. Up to 1525 conditions per place. [2023-09-01 14:35:06,147 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 232 selfloop transitions, 54 changer transitions 24/314 dead transitions. [2023-09-01 14:35:06,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 314 transitions, 2629 flow [2023-09-01 14:35:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 14:35:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 14:35:06,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3001 transitions. [2023-09-01 14:35:06,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48154685494223365 [2023-09-01 14:35:06,155 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3001 transitions. [2023-09-01 14:35:06,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3001 transitions. [2023-09-01 14:35:06,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:06,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3001 transitions. [2023-09-01 14:35:06,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 157.94736842105263) internal successors, (3001), 19 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:06,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 328.0) internal successors, (6560), 20 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:06,174 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 328.0) internal successors, (6560), 20 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:06,174 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 678 flow. Second operand 19 states and 3001 transitions. [2023-09-01 14:35:06,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 314 transitions, 2629 flow [2023-09-01 14:35:06,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 314 transitions, 2472 flow, removed 47 selfloop flow, removed 6 redundant places. [2023-09-01 14:35:06,258 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1185 flow [2023-09-01 14:35:06,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1185, PETRI_PLACES=106, PETRI_TRANSITIONS=116} [2023-09-01 14:35:06,259 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2023-09-01 14:35:06,259 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1185 flow [2023-09-01 14:35:06,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.13333333333333) internal successors, (2237), 15 states have internal predecessors, (2237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:06,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:06,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:06,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 14:35:06,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 14:35:06,466 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:06,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1824849498, now seen corresponding path program 6 times [2023-09-01 14:35:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363381244] [2023-09-01 14:35:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 14:35:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:06,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363381244] [2023-09-01 14:35:06,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363381244] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:06,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323994010] [2023-09-01 14:35:06,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:35:06,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:06,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:06,730 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:06,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 14:35:06,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 14:35:06,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:06,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 14:35:06,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 14:35:06,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 14:35:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323994010] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:07,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:07,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-09-01 14:35:07,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639316401] [2023-09-01 14:35:07,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:07,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 14:35:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 14:35:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-09-01 14:35:07,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 328 [2023-09-01 14:35:07,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 116 transitions, 1185 flow. Second operand has 14 states, 14 states have (on average 149.14285714285714) internal successors, (2088), 14 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:07,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:07,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 328 [2023-09-01 14:35:07,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:08,507 INFO L130 PetriNetUnfolder]: 5322/7712 cut-off events. [2023-09-01 14:35:08,507 INFO L131 PetriNetUnfolder]: For 37213/37321 co-relation queries the response was YES. [2023-09-01 14:35:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37890 conditions, 7712 events. 5322/7712 cut-off events. For 37213/37321 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 37613 event pairs, 319 based on Foata normal form. 184/7895 useless extension candidates. Maximal degree in co-relation 37831. Up to 1943 conditions per place. [2023-09-01 14:35:08,645 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 208 selfloop transitions, 77 changer transitions 24/313 dead transitions. [2023-09-01 14:35:08,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 313 transitions, 2910 flow [2023-09-01 14:35:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 14:35:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 14:35:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2686 transitions. [2023-09-01 14:35:08,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2023-09-01 14:35:08,652 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2686 transitions. [2023-09-01 14:35:08,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2686 transitions. [2023-09-01 14:35:08,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:08,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2686 transitions. [2023-09-01 14:35:08,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:08,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:08,668 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:08,668 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1185 flow. Second operand 17 states and 2686 transitions. [2023-09-01 14:35:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 313 transitions, 2910 flow [2023-09-01 14:35:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 313 transitions, 2831 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-09-01 14:35:08,916 INFO L231 Difference]: Finished difference. Result has 127 places, 138 transitions, 1647 flow [2023-09-01 14:35:08,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1647, PETRI_PLACES=127, PETRI_TRANSITIONS=138} [2023-09-01 14:35:08,917 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2023-09-01 14:35:08,917 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 138 transitions, 1647 flow [2023-09-01 14:35:08,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 149.14285714285714) internal successors, (2088), 14 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:08,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:08,918 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:08,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 14:35:09,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 14:35:09,125 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:09,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1957586289, now seen corresponding path program 7 times [2023-09-01 14:35:09,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991337962] [2023-09-01 14:35:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 14:35:09,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:09,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991337962] [2023-09-01 14:35:09,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991337962] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:09,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846255147] [2023-09-01 14:35:09,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 14:35:09,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:09,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:09,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:09,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 14:35:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:09,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:35:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 14:35:09,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 14:35:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846255147] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:09,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:09,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-09-01 14:35:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60073924] [2023-09-01 14:35:09,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:09,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 14:35:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 14:35:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:35:10,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:10,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 1647 flow. Second operand has 19 states, 19 states have (on average 139.8421052631579) internal successors, (2657), 19 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:10,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:10,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:10,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:11,673 INFO L130 PetriNetUnfolder]: 7658/11250 cut-off events. [2023-09-01 14:35:11,673 INFO L131 PetriNetUnfolder]: For 75140/75711 co-relation queries the response was YES. [2023-09-01 14:35:11,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57205 conditions, 11250 events. 7658/11250 cut-off events. For 75140/75711 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 62070 event pairs, 2159 based on Foata normal form. 693/11801 useless extension candidates. Maximal degree in co-relation 54064. Up to 5118 conditions per place. [2023-09-01 14:35:11,799 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 163 selfloop transitions, 9 changer transitions 130/321 dead transitions. [2023-09-01 14:35:11,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 321 transitions, 4057 flow [2023-09-01 14:35:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 14:35:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 14:35:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1892 transitions. [2023-09-01 14:35:11,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437148217636023 [2023-09-01 14:35:11,809 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1892 transitions. [2023-09-01 14:35:11,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1892 transitions. [2023-09-01 14:35:11,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:11,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1892 transitions. [2023-09-01 14:35:11,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 145.53846153846155) internal successors, (1892), 13 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:11,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 328.0) internal successors, (4592), 14 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:11,820 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 328.0) internal successors, (4592), 14 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:11,820 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 1647 flow. Second operand 13 states and 1892 transitions. [2023-09-01 14:35:11,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 321 transitions, 4057 flow [2023-09-01 14:35:12,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3807 flow, removed 91 selfloop flow, removed 6 redundant places. [2023-09-01 14:35:12,214 INFO L231 Difference]: Finished difference. Result has 138 places, 140 transitions, 1608 flow [2023-09-01 14:35:12,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1608, PETRI_PLACES=138, PETRI_TRANSITIONS=140} [2023-09-01 14:35:12,215 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 105 predicate places. [2023-09-01 14:35:12,215 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 140 transitions, 1608 flow [2023-09-01 14:35:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 139.8421052631579) internal successors, (2657), 19 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:12,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:12,217 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:12,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:12,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 14:35:12,423 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:12,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2013782112, now seen corresponding path program 8 times [2023-09-01 14:35:12,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934944123] [2023-09-01 14:35:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-09-01 14:35:12,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:12,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934944123] [2023-09-01 14:35:12,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934944123] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:12,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370726406] [2023-09-01 14:35:12,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:35:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:12,681 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:12,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 14:35:12,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:35:12,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:12,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:35:12,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-09-01 14:35:12,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-09-01 14:35:13,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370726406] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:13,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:13,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-09-01 14:35:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775427392] [2023-09-01 14:35:13,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 14:35:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 14:35:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-09-01 14:35:13,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:13,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 1608 flow. Second operand has 20 states, 20 states have (on average 139.2) internal successors, (2784), 20 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:13,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:13,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:13,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:14,767 INFO L130 PetriNetUnfolder]: 6434/9178 cut-off events. [2023-09-01 14:35:14,768 INFO L131 PetriNetUnfolder]: For 57039/57404 co-relation queries the response was YES. [2023-09-01 14:35:14,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47464 conditions, 9178 events. 6434/9178 cut-off events. For 57039/57404 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45952 event pairs, 1922 based on Foata normal form. 635/9672 useless extension candidates. Maximal degree in co-relation 47382. Up to 5194 conditions per place. [2023-09-01 14:35:14,828 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 276 selfloop transitions, 17 changer transitions 60/371 dead transitions. [2023-09-01 14:35:14,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 371 transitions, 5036 flow [2023-09-01 14:35:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 14:35:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 14:35:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1579 transitions. [2023-09-01 14:35:14,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43763858093126384 [2023-09-01 14:35:14,832 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1579 transitions. [2023-09-01 14:35:14,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1579 transitions. [2023-09-01 14:35:14,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:14,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1579 transitions. [2023-09-01 14:35:14,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 143.54545454545453) internal successors, (1579), 11 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:14,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 328.0) internal successors, (3936), 12 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:14,842 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 328.0) internal successors, (3936), 12 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:14,842 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 1608 flow. Second operand 11 states and 1579 transitions. [2023-09-01 14:35:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 371 transitions, 5036 flow [2023-09-01 14:35:15,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 371 transitions, 4894 flow, removed 63 selfloop flow, removed 7 redundant places. [2023-09-01 14:35:15,174 INFO L231 Difference]: Finished difference. Result has 135 places, 126 transitions, 1421 flow [2023-09-01 14:35:15,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=135, PETRI_TRANSITIONS=126} [2023-09-01 14:35:15,175 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 102 predicate places. [2023-09-01 14:35:15,175 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 126 transitions, 1421 flow [2023-09-01 14:35:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 139.2) internal successors, (2784), 20 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:15,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:15,176 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:15,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:15,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 14:35:15,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:15,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash -816507476, now seen corresponding path program 9 times [2023-09-01 14:35:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:15,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055739610] [2023-09-01 14:35:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:15,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 14:35:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:15,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055739610] [2023-09-01 14:35:15,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055739610] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:15,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160681678] [2023-09-01 14:35:15,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:35:15,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:15,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:15,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:15,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 14:35:15,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 14:35:15,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:35:15,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 14:35:15,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 14:35:16,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160681678] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:16,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:16,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-09-01 14:35:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104856287] [2023-09-01 14:35:16,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:16,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 14:35:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 14:35:16,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-09-01 14:35:16,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:16,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 126 transitions, 1421 flow. Second operand has 20 states, 20 states have (on average 139.75) internal successors, (2795), 20 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:16,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:16,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:16,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:17,660 INFO L130 PetriNetUnfolder]: 5413/7679 cut-off events. [2023-09-01 14:35:17,660 INFO L131 PetriNetUnfolder]: For 46210/46350 co-relation queries the response was YES. [2023-09-01 14:35:17,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42148 conditions, 7679 events. 5413/7679 cut-off events. For 46210/46350 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 35293 event pairs, 594 based on Foata normal form. 178/7842 useless extension candidates. Maximal degree in co-relation 42070. Up to 4104 conditions per place. [2023-09-01 14:35:17,711 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 148 selfloop transitions, 46 changer transitions 0/201 dead transitions. [2023-09-01 14:35:17,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 201 transitions, 2416 flow [2023-09-01 14:35:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 14:35:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 14:35:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1728 transitions. [2023-09-01 14:35:17,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2023-09-01 14:35:17,714 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1728 transitions. [2023-09-01 14:35:17,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1728 transitions. [2023-09-01 14:35:17,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:17,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1728 transitions. [2023-09-01 14:35:17,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.0) internal successors, (1728), 12 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:17,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 328.0) internal successors, (4264), 13 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:17,721 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 328.0) internal successors, (4264), 13 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:17,721 INFO L175 Difference]: Start difference. First operand has 135 places, 126 transitions, 1421 flow. Second operand 12 states and 1728 transitions. [2023-09-01 14:35:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 201 transitions, 2416 flow [2023-09-01 14:35:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 201 transitions, 2264 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-09-01 14:35:18,064 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 1589 flow [2023-09-01 14:35:18,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1589, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2023-09-01 14:35:18,064 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 103 predicate places. [2023-09-01 14:35:18,064 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 1589 flow [2023-09-01 14:35:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 139.75) internal successors, (2795), 20 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:18,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:18,065 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:18,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:18,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 14:35:18,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:18,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1011768859, now seen corresponding path program 10 times [2023-09-01 14:35:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:18,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731284504] [2023-09-01 14:35:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 14:35:18,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731284504] [2023-09-01 14:35:18,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731284504] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:18,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962750578] [2023-09-01 14:35:18,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 14:35:18,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:18,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:18,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:18,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 14:35:18,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 14:35:18,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:18,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 14:35:18,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 14:35:18,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-09-01 14:35:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962750578] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:19,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2023-09-01 14:35:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232221135] [2023-09-01 14:35:19,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 14:35:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 14:35:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-09-01 14:35:19,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 328 [2023-09-01 14:35:19,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 1589 flow. Second operand has 17 states, 17 states have (on average 149.05882352941177) internal successors, (2534), 17 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:19,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:19,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 328 [2023-09-01 14:35:19,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:21,006 INFO L130 PetriNetUnfolder]: 7450/10528 cut-off events. [2023-09-01 14:35:21,006 INFO L131 PetriNetUnfolder]: For 58408/58530 co-relation queries the response was YES. [2023-09-01 14:35:21,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55880 conditions, 10528 events. 7450/10528 cut-off events. For 58408/58530 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 49706 event pairs, 449 based on Foata normal form. 210/10738 useless extension candidates. Maximal degree in co-relation 55803. Up to 2092 conditions per place. [2023-09-01 14:35:21,064 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 342 selfloop transitions, 104 changer transitions 52/502 dead transitions. [2023-09-01 14:35:21,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 502 transitions, 4850 flow [2023-09-01 14:35:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-09-01 14:35:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-09-01 14:35:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4421 transitions. [2023-09-01 14:35:21,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813806620209059 [2023-09-01 14:35:21,070 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4421 transitions. [2023-09-01 14:35:21,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4421 transitions. [2023-09-01 14:35:21,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:21,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4421 transitions. [2023-09-01 14:35:21,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 157.89285714285714) internal successors, (4421), 28 states have internal predecessors, (4421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:21,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 328.0) internal successors, (9512), 29 states have internal predecessors, (9512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:21,085 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 328.0) internal successors, (9512), 29 states have internal predecessors, (9512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:21,085 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 1589 flow. Second operand 28 states and 4421 transitions. [2023-09-01 14:35:21,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 502 transitions, 4850 flow [2023-09-01 14:35:21,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 502 transitions, 4785 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 14:35:21,411 INFO L231 Difference]: Finished difference. Result has 161 places, 169 transitions, 2319 flow [2023-09-01 14:35:21,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2319, PETRI_PLACES=161, PETRI_TRANSITIONS=169} [2023-09-01 14:35:21,411 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2023-09-01 14:35:21,411 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 169 transitions, 2319 flow [2023-09-01 14:35:21,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 149.05882352941177) internal successors, (2534), 17 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:21,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:21,412 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:21,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 14:35:21,618 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:21,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1542560206, now seen corresponding path program 11 times [2023-09-01 14:35:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155656789] [2023-09-01 14:35:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-09-01 14:35:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:21,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155656789] [2023-09-01 14:35:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155656789] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:21,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503048943] [2023-09-01 14:35:21,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 14:35:21,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:21,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:21,852 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:21,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 14:35:22,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-09-01 14:35:22,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:22,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 14:35:22,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-09-01 14:35:22,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-09-01 14:35:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503048943] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:22,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:22,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-09-01 14:35:22,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699345815] [2023-09-01 14:35:22,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:22,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 14:35:22,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 14:35:22,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2023-09-01 14:35:23,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:23,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 169 transitions, 2319 flow. Second operand has 24 states, 24 states have (on average 139.54166666666666) internal successors, (3349), 24 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:23,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:23,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:23,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:25,300 INFO L130 PetriNetUnfolder]: 11441/16325 cut-off events. [2023-09-01 14:35:25,300 INFO L131 PetriNetUnfolder]: For 131859/132679 co-relation queries the response was YES. [2023-09-01 14:35:25,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92371 conditions, 16325 events. 11441/16325 cut-off events. For 131859/132679 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 87768 event pairs, 2900 based on Foata normal form. 810/16929 useless extension candidates. Maximal degree in co-relation 87325. Up to 6780 conditions per place. [2023-09-01 14:35:25,436 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 205 selfloop transitions, 11 changer transitions 226/464 dead transitions. [2023-09-01 14:35:25,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 464 transitions, 6616 flow [2023-09-01 14:35:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 14:35:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 14:35:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2468 transitions. [2023-09-01 14:35:25,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44261119081779055 [2023-09-01 14:35:25,441 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2468 transitions. [2023-09-01 14:35:25,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2468 transitions. [2023-09-01 14:35:25,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:25,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2468 transitions. [2023-09-01 14:35:25,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.1764705882353) internal successors, (2468), 17 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:25,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:25,453 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 328.0) internal successors, (5904), 18 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:25,453 INFO L175 Difference]: Start difference. First operand has 161 places, 169 transitions, 2319 flow. Second operand 17 states and 2468 transitions. [2023-09-01 14:35:25,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 464 transitions, 6616 flow [2023-09-01 14:35:26,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 464 transitions, 6013 flow, removed 134 selfloop flow, removed 15 redundant places. [2023-09-01 14:35:26,150 INFO L231 Difference]: Finished difference. Result has 168 places, 171 transitions, 2176 flow [2023-09-01 14:35:26,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2176, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2023-09-01 14:35:26,150 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2023-09-01 14:35:26,150 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 2176 flow [2023-09-01 14:35:26,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 139.54166666666666) internal successors, (3349), 24 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:26,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:26,151 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:26,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:26,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:26,352 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:26,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2025698849, now seen corresponding path program 12 times [2023-09-01 14:35:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881124043] [2023-09-01 14:35:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:26,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-09-01 14:35:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881124043] [2023-09-01 14:35:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881124043] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964027408] [2023-09-01 14:35:26,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 14:35:26,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:26,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:26,649 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:26,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 14:35:27,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-09-01 14:35:27,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:27,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 14:35:27,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-09-01 14:35:27,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-09-01 14:35:27,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964027408] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:27,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:27,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-09-01 14:35:27,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992097407] [2023-09-01 14:35:27,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:27,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 14:35:27,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 14:35:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2023-09-01 14:35:27,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:27,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 2176 flow. Second operand has 25 states, 25 states have (on average 139.36) internal successors, (3484), 25 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:27,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:27,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:27,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:29,547 INFO L130 PetriNetUnfolder]: 8448/11779 cut-off events. [2023-09-01 14:35:29,548 INFO L131 PetriNetUnfolder]: For 89172/89811 co-relation queries the response was YES. [2023-09-01 14:35:29,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65503 conditions, 11779 events. 8448/11779 cut-off events. For 89172/89811 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 57514 event pairs, 2151 based on Foata normal form. 856/12458 useless extension candidates. Maximal degree in co-relation 65406. Up to 5793 conditions per place. [2023-09-01 14:35:29,626 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 477 selfloop transitions, 20 changer transitions 0/518 dead transitions. [2023-09-01 14:35:29,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 518 transitions, 7364 flow [2023-09-01 14:35:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 14:35:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 14:35:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2005 transitions. [2023-09-01 14:35:29,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366289198606272 [2023-09-01 14:35:29,630 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2005 transitions. [2023-09-01 14:35:29,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2005 transitions. [2023-09-01 14:35:29,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:29,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2005 transitions. [2023-09-01 14:35:29,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.21428571428572) internal successors, (2005), 14 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:29,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 328.0) internal successors, (4920), 15 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:29,639 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 328.0) internal successors, (4920), 15 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:29,640 INFO L175 Difference]: Start difference. First operand has 168 places, 171 transitions, 2176 flow. Second operand 14 states and 2005 transitions. [2023-09-01 14:35:29,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 518 transitions, 7364 flow [2023-09-01 14:35:30,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 518 transitions, 7065 flow, removed 139 selfloop flow, removed 9 redundant places. [2023-09-01 14:35:30,100 INFO L231 Difference]: Finished difference. Result has 163 places, 172 transitions, 2145 flow [2023-09-01 14:35:30,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2145, PETRI_PLACES=163, PETRI_TRANSITIONS=172} [2023-09-01 14:35:30,101 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2023-09-01 14:35:30,102 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 172 transitions, 2145 flow [2023-09-01 14:35:30,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 139.36) internal successors, (3484), 25 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:30,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:30,103 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:30,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:30,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:30,309 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:30,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash 421770685, now seen corresponding path program 13 times [2023-09-01 14:35:30,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:30,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978038873] [2023-09-01 14:35:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:30,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-09-01 14:35:30,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:30,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978038873] [2023-09-01 14:35:30,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978038873] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:30,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534957929] [2023-09-01 14:35:30,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 14:35:30,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:30,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:30,585 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:30,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 14:35:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:30,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 14:35:30,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-09-01 14:35:30,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-09-01 14:35:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534957929] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:31,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2023-09-01 14:35:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941056001] [2023-09-01 14:35:31,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:31,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 14:35:31,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:31,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 14:35:31,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2023-09-01 14:35:31,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 328 [2023-09-01 14:35:31,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 172 transitions, 2145 flow. Second operand has 25 states, 25 states have (on average 139.6) internal successors, (3490), 25 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:31,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:31,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 328 [2023-09-01 14:35:31,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:33,085 INFO L130 PetriNetUnfolder]: 8881/12471 cut-off events. [2023-09-01 14:35:33,086 INFO L131 PetriNetUnfolder]: For 81543/81703 co-relation queries the response was YES. [2023-09-01 14:35:33,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71775 conditions, 12471 events. 8881/12471 cut-off events. For 81543/81703 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 58901 event pairs, 891 based on Foata normal form. 210/12680 useless extension candidates. Maximal degree in co-relation 71684. Up to 5977 conditions per place. [2023-09-01 14:35:33,181 INFO L137 encePairwiseOnDemand]: 319/328 looper letters, 201 selfloop transitions, 63 changer transitions 0/271 dead transitions. [2023-09-01 14:35:33,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 271 transitions, 3503 flow [2023-09-01 14:35:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 14:35:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 14:35:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2154 transitions. [2023-09-01 14:35:33,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4378048780487805 [2023-09-01 14:35:33,184 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2154 transitions. [2023-09-01 14:35:33,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2154 transitions. [2023-09-01 14:35:33,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:33,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2154 transitions. [2023-09-01 14:35:33,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 143.6) internal successors, (2154), 15 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:33,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 328.0) internal successors, (5248), 16 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:33,191 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 328.0) internal successors, (5248), 16 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:33,191 INFO L175 Difference]: Start difference. First operand has 163 places, 172 transitions, 2145 flow. Second operand 15 states and 2154 transitions. [2023-09-01 14:35:33,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 271 transitions, 3503 flow [2023-09-01 14:35:33,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 271 transitions, 3385 flow, removed 26 selfloop flow, removed 11 redundant places. [2023-09-01 14:35:33,631 INFO L231 Difference]: Finished difference. Result has 168 places, 181 transitions, 2423 flow [2023-09-01 14:35:33,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2423, PETRI_PLACES=168, PETRI_TRANSITIONS=181} [2023-09-01 14:35:33,631 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 135 predicate places. [2023-09-01 14:35:33,631 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 181 transitions, 2423 flow [2023-09-01 14:35:33,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 139.6) internal successors, (3490), 25 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:33,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:33,632 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:33,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 14:35:33,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:33,833 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:33,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1021162570, now seen corresponding path program 14 times [2023-09-01 14:35:33,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:33,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647151521] [2023-09-01 14:35:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:33,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 14:35:34,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:34,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647151521] [2023-09-01 14:35:34,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647151521] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921455189] [2023-09-01 14:35:34,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 14:35:34,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:34,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:34,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:34,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 14:35:34,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 14:35:34,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:34,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 14:35:34,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 14:35:34,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 14:35:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921455189] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:34,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-09-01 14:35:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120225342] [2023-09-01 14:35:34,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:34,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 14:35:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 14:35:34,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-09-01 14:35:34,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 328 [2023-09-01 14:35:34,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 181 transitions, 2423 flow. Second operand has 19 states, 19 states have (on average 148.94736842105263) internal successors, (2830), 19 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:34,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:34,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 328 [2023-09-01 14:35:34,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:37,608 INFO L130 PetriNetUnfolder]: 11936/16724 cut-off events. [2023-09-01 14:35:37,608 INFO L131 PetriNetUnfolder]: For 107878/108036 co-relation queries the response was YES. [2023-09-01 14:35:37,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94725 conditions, 16724 events. 11936/16724 cut-off events. For 107878/108036 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 81503 event pairs, 571 based on Foata normal form. 258/16982 useless extension candidates. Maximal degree in co-relation 94632. Up to 3428 conditions per place. [2023-09-01 14:35:37,715 INFO L137 encePairwiseOnDemand]: 321/328 looper letters, 553 selfloop transitions, 159 changer transitions 85/801 dead transitions. [2023-09-01 14:35:37,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 801 transitions, 8120 flow [2023-09-01 14:35:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-09-01 14:35:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-09-01 14:35:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6791 transitions. [2023-09-01 14:35:37,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48149461145774247 [2023-09-01 14:35:37,723 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6791 transitions. [2023-09-01 14:35:37,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6791 transitions. [2023-09-01 14:35:37,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:37,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6791 transitions. [2023-09-01 14:35:37,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 157.93023255813952) internal successors, (6791), 43 states have internal predecessors, (6791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:37,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 328.0) internal successors, (14432), 44 states have internal predecessors, (14432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:37,742 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 328.0) internal successors, (14432), 44 states have internal predecessors, (14432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:37,742 INFO L175 Difference]: Start difference. First operand has 168 places, 181 transitions, 2423 flow. Second operand 43 states and 6791 transitions. [2023-09-01 14:35:37,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 801 transitions, 8120 flow [2023-09-01 14:35:38,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 801 transitions, 8012 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-09-01 14:35:38,511 INFO L231 Difference]: Finished difference. Result has 206 places, 233 transitions, 3574 flow [2023-09-01 14:35:38,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3574, PETRI_PLACES=206, PETRI_TRANSITIONS=233} [2023-09-01 14:35:38,512 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 173 predicate places. [2023-09-01 14:35:38,512 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 233 transitions, 3574 flow [2023-09-01 14:35:38,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 148.94736842105263) internal successors, (2830), 19 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:38,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 14:35:38,512 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:38,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-09-01 14:35:38,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:38,713 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 14:35:38,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 14:35:38,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1430726769, now seen corresponding path program 15 times [2023-09-01 14:35:38,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 14:35:38,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331436466] [2023-09-01 14:35:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 14:35:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 14:35:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 14:35:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 14:35:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 14:35:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331436466] [2023-09-01 14:35:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331436466] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 14:35:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557534416] [2023-09-01 14:35:39,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 14:35:39,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 14:35:39,037 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 14:35:39,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 14:35:39,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 14:35:39,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 14:35:39,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 14:35:39,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 14:35:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 14:35:39,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 14:35:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-09-01 14:35:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557534416] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 14:35:39,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 14:35:39,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 18 [2023-09-01 14:35:39,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696101409] [2023-09-01 14:35:39,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 14:35:39,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 14:35:39,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 14:35:39,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 14:35:39,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-09-01 14:35:40,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 328 [2023-09-01 14:35:40,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 233 transitions, 3574 flow. Second operand has 18 states, 18 states have (on average 133.88888888888889) internal successors, (2410), 18 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:40,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 14:35:40,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 328 [2023-09-01 14:35:40,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 14:35:44,978 INFO L130 PetriNetUnfolder]: 19835/27920 cut-off events. [2023-09-01 14:35:44,978 INFO L131 PetriNetUnfolder]: For 210916/211176 co-relation queries the response was YES. [2023-09-01 14:35:45,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166503 conditions, 27920 events. 19835/27920 cut-off events. For 210916/211176 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 150296 event pairs, 192 based on Foata normal form. 586/28506 useless extension candidates. Maximal degree in co-relation 159348. Up to 5793 conditions per place. [2023-09-01 14:35:45,170 INFO L137 encePairwiseOnDemand]: 314/328 looper letters, 0 selfloop transitions, 0 changer transitions 1270/1270 dead transitions. [2023-09-01 14:35:45,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1270 transitions, 18792 flow [2023-09-01 14:35:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-09-01 14:35:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-09-01 14:35:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6783 transitions. [2023-09-01 14:35:45,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4220383275261324 [2023-09-01 14:35:45,178 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6783 transitions. [2023-09-01 14:35:45,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6783 transitions. [2023-09-01 14:35:45,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 14:35:45,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6783 transitions. [2023-09-01 14:35:45,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 138.42857142857142) internal successors, (6783), 49 states have internal predecessors, (6783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:45,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 328.0) internal successors, (16400), 50 states have internal predecessors, (16400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:45,204 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 328.0) internal successors, (16400), 50 states have internal predecessors, (16400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:45,204 INFO L175 Difference]: Start difference. First operand has 206 places, 233 transitions, 3574 flow. Second operand 49 states and 6783 transitions. [2023-09-01 14:35:45,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1270 transitions, 18792 flow [2023-09-01 14:35:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1270 transitions, 16260 flow, removed 293 selfloop flow, removed 32 redundant places. [2023-09-01 14:35:47,436 INFO L231 Difference]: Finished difference. Result has 219 places, 0 transitions, 0 flow [2023-09-01 14:35:47,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=0, PETRI_PLACES=219, PETRI_TRANSITIONS=0} [2023-09-01 14:35:47,437 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2023-09-01 14:35:47,437 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 0 transitions, 0 flow [2023-09-01 14:35:47,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 133.88888888888889) internal successors, (2410), 18 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 14:35:47,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-09-01 14:35:47,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-09-01 14:35:47,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-09-01 14:35:47,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-09-01 14:35:47,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-09-01 14:35:47,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 14:35:47,641 INFO L445 BasicCegarLoop]: Path program histogram: [15, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 14:35:47,643 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 14:35:47,643 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 14:35:47,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:35:47 BasicIcfg [2023-09-01 14:35:47,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 14:35:47,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 14:35:47,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 14:35:47,646 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 14:35:47,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:34:48" (3/4) ... [2023-09-01 14:35:47,649 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 14:35:47,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 14:35:47,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 14:35:47,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 14:35:47,659 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-09-01 14:35:47,659 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 14:35:47,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 14:35:47,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 14:35:47,698 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 14:35:47,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 14:35:47,703 INFO L158 Benchmark]: Toolchain (without parser) took 60231.64ms. Allocated memory was 96.5MB in the beginning and 8.5GB in the end (delta: 8.4GB). Free memory was 74.9MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-09-01 14:35:47,703 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 14:35:47,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.43ms. Allocated memory is still 96.5MB. Free memory was 74.7MB in the beginning and 63.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 14:35:47,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.29ms. Allocated memory is still 96.5MB. Free memory was 63.1MB in the beginning and 61.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:35:47,704 INFO L158 Benchmark]: Boogie Preprocessor took 33.23ms. Allocated memory is still 96.5MB. Free memory was 61.3MB in the beginning and 59.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:35:47,704 INFO L158 Benchmark]: RCFGBuilder took 656.03ms. Allocated memory is still 96.5MB. Free memory was 59.5MB in the beginning and 69.2MB in the end (delta: -9.7MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2023-09-01 14:35:47,705 INFO L158 Benchmark]: TraceAbstraction took 59204.87ms. Allocated memory was 96.5MB in the beginning and 8.5GB in the end (delta: 8.4GB). Free memory was 68.8MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2023-09-01 14:35:47,705 INFO L158 Benchmark]: Witness Printer took 56.52ms. Allocated memory is still 8.5GB. Free memory was 6.7GB in the beginning and 6.7GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 14:35:47,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 67.1MB. Free memory is still 45.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.43ms. Allocated memory is still 96.5MB. Free memory was 74.7MB in the beginning and 63.1MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.29ms. Allocated memory is still 96.5MB. Free memory was 63.1MB in the beginning and 61.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.23ms. Allocated memory is still 96.5MB. Free memory was 61.3MB in the beginning and 59.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 656.03ms. Allocated memory is still 96.5MB. Free memory was 59.5MB in the beginning and 69.2MB in the end (delta: -9.7MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 59204.87ms. Allocated memory was 96.5MB in the beginning and 8.5GB in the end (delta: 8.4GB). Free memory was 68.8MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 56.52ms. Allocated memory is still 8.5GB. Free memory was 6.7GB in the beginning and 6.7GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 155 PlacesBefore, 33 PlacesAfterwards, 161 TransitionsBefore, 29 TransitionsAfterwards, 1720 CoEnabledTransitionPairs, 7 FixpointIterations, 84 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 6 ConcurrentYvCompositions, 10 ChoiceCompositions, 154 TotalNumberOfCompositions, 2460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2032, independent: 1969, independent conditional: 0, independent unconditional: 1969, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 921, independent: 904, independent conditional: 0, independent unconditional: 904, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2032, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 921, unknown conditional: 0, unknown unconditional: 921] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 103]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 194 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 59.1s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 37.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9246 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8308 mSDsluCounter, 4756 SdHoareTripleChecker+Invalid, 8.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4531 mSDsCounter, 393 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21310 IncrementalHoareTripleChecker+Invalid, 21703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 393 mSolverCounterUnsat, 225 mSDtfsCounter, 21310 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1682 GetRequests, 1158 SyntacticMatches, 51 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4039 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3574occurred in iteration=21, InterpolantAutomatonStates: 316, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 1406 NumberOfCodeBlocks, 1386 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 2004 ConstructedInterpolants, 0 QuantifiedInterpolants, 5986 SizeOfPredicates, 61 NumberOfNonLiveVariables, 5492 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 58 InterpolantComputations, 8 PerfectInterpolantSequences, 1083/1438 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 14:35:47,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE