./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.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 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:28:57,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:28:57,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:28:57,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:28:57,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:28:57,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:28:57,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:28:57,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:28:57,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:28:57,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:28:57,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:28:57,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:28:57,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:28:57,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:28:57,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:28:57,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:28:57,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:28:57,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:28:57,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:28:57,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:28:57,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:28:57,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:28:57,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:28:57,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:28:57,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:28:57,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:28:57,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:28:57,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:28:57,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:28:57,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:28:57,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:28:57,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:28:57,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:28:57,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:28:57,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:28:57,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:28:57,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:28:57,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:28:57,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:28:57,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:28:57,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:28:57,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:28:57,790 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:28:57,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:28:57,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:28:57,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:28:57,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:28:57,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:28:57,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:28:57,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:28:57,793 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:28:57,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:28:57,794 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:28:57,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:28:57,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:28:57,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:28:57,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:28:57,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:28:57,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:28:57,796 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:28:57,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:28:57,796 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:28:57,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:28:57,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:28:57,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:28:57,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:28:57,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:28:57,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:28:57,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:28:57,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:28:57,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:28:57,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:28:57,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:28:57,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:28:57,799 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:28:57,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:28:57,799 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:28:57,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:28:58,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:28:58,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:28:58,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:28:58,142 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:28:58,143 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:28:58,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c [2023-08-31 01:28:59,305 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:28:59,517 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:28:59,518 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c [2023-08-31 01:28:59,528 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c7b9d3f/5af4e2dec44a4dbabcec84d8e3c15b93/FLAG5c4deacc3 [2023-08-31 01:28:59,540 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c7b9d3f/5af4e2dec44a4dbabcec84d8e3c15b93 [2023-08-31 01:28:59,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:28:59,544 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:28:59,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:28:59,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:28:59,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:28:59,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:28:59" (1/1) ... [2023-08-31 01:28:59,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b391648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:28:59, skipping insertion in model container [2023-08-31 01:28:59,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:28:59" (1/1) ... [2023-08-31 01:28:59,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:28:59,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:28:59,837 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/chl-poker-hand-trans.wvr.c[18874,18887] [2023-08-31 01:28:59,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:28:59,854 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:28:59,973 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/chl-poker-hand-trans.wvr.c[18874,18887] [2023-08-31 01:28:59,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:28:59,984 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:29:00,000 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:29:00,007 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:29:00,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00 WrapperNode [2023-08-31 01:29:00,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:29:00,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:29:00,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:29:00,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:29:00,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,174 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2365 [2023-08-31 01:29:00,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:29:00,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:29:00,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:29:00,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:29:00,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,301 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:29:00,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:29:00,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:29:00,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:29:00,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (1/1) ... [2023-08-31 01:29:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:29:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:29:00,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 01:29:00,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 01:29:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:29:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:29:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:29:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:29:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:29:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:29:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:29:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:29:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:29:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:29:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:29:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:29:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:29:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:29:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:29:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:29:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:29:00,413 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:29:00,683 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:29:00,686 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:29:02,503 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:29:04,569 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:29:04,570 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-31 01:29:04,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:29:04 BoogieIcfgContainer [2023-08-31 01:29:04,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:29:04,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:29:04,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:29:04,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:29:04,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:28:59" (1/3) ... [2023-08-31 01:29:04,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64703271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:29:04, skipping insertion in model container [2023-08-31 01:29:04,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:29:00" (2/3) ... [2023-08-31 01:29:04,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64703271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:29:04, skipping insertion in model container [2023-08-31 01:29:04,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:29:04" (3/3) ... [2023-08-31 01:29:04,580 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-trans.wvr.c [2023-08-31 01:29:04,587 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:29:04,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:29:04,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:29:04,596 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:29:04,983 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:29:05,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 726 transitions, 1476 flow [2023-08-31 01:29:05,268 INFO L130 PetriNetUnfolder]: 79/723 cut-off events. [2023-08-31 01:29:05,268 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:29:05,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 723 events. 79/723 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 934 event pairs, 0 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 642. Up to 7 conditions per place. [2023-08-31 01:29:05,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 726 transitions, 1476 flow [2023-08-31 01:29:05,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 713 transitions, 1444 flow [2023-08-31 01:29:05,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:29:05,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 644 places, 713 transitions, 1444 flow [2023-08-31 01:29:05,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 644 places, 713 transitions, 1444 flow [2023-08-31 01:29:05,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 713 transitions, 1444 flow [2023-08-31 01:29:05,528 INFO L130 PetriNetUnfolder]: 79/713 cut-off events. [2023-08-31 01:29:05,529 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:29:05,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 713 events. 79/713 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 930 event pairs, 0 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 642. Up to 7 conditions per place. [2023-08-31 01:29:05,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 22110 [2023-08-31 01:30:24,368 INFO L134 LiptonReduction]: Checked pairs total: 22962 [2023-08-31 01:30:24,369 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-08-31 01:30:24,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:30:24,387 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;@503768a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:30:24,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:30:24,449 INFO L130 PetriNetUnfolder]: 24/57 cut-off events. [2023-08-31 01:30:24,449 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:30:24,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:24,450 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] [2023-08-31 01:30:24,451 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)] === [2023-08-31 01:30:24,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash -411687634, now seen corresponding path program 1 times [2023-08-31 01:30:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:24,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383897058] [2023-08-31 01:30:24,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:30:25,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:25,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383897058] [2023-08-31 01:30:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383897058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:25,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:25,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:30:25,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253469746] [2023-08-31 01:30:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:25,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:30:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:30:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:30:25,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1562 [2023-08-31 01:30:25,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:25,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:25,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1562 [2023-08-31 01:30:25,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:27,138 INFO L130 PetriNetUnfolder]: 873/1099 cut-off events. [2023-08-31 01:30:27,138 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-31 01:30:27,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1099 events. 873/1099 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2607 event pairs, 333 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1844. Up to 1097 conditions per place. [2023-08-31 01:30:27,145 INFO L137 encePairwiseOnDemand]: 1555/1562 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-31 01:30:27,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 262 flow [2023-08-31 01:30:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:30:27,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:30:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-08-31 01:30:27,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945795988049509 [2023-08-31 01:30:27,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-08-31 01:30:27,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-08-31 01:30:27,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:27,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-08-31 01:30:27,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:27,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:27,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:27,201 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 134 flow. Second operand 3 states and 1849 transitions. [2023-08-31 01:30:27,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 262 flow [2023-08-31 01:30:27,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:30:27,208 INFO L231 Difference]: Finished difference. Result has 41 places, 61 transitions, 154 flow [2023-08-31 01:30:27,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=61} [2023-08-31 01:30:27,214 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-08-31 01:30:27,215 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 61 transitions, 154 flow [2023-08-31 01:30:27,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:27,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:27,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:30:27,220 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)] === [2023-08-31 01:30:27,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:27,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2142957173, now seen corresponding path program 1 times [2023-08-31 01:30:27,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:27,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043252543] [2023-08-31 01:30:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:27,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:30:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043252543] [2023-08-31 01:30:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043252543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:27,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:30:27,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:30:27,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110059733] [2023-08-31 01:30:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:27,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:30:27,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:30:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:30:27,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1562 [2023-08-31 01:30:27,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:27,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:27,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1562 [2023-08-31 01:30:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:28,974 INFO L130 PetriNetUnfolder]: 873/1102 cut-off events. [2023-08-31 01:30:28,974 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 01:30:28,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1102 events. 873/1102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2580 event pairs, 333 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 2211. Up to 1100 conditions per place. [2023-08-31 01:30:28,979 INFO L137 encePairwiseOnDemand]: 1555/1562 looper letters, 58 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-31 01:30:28,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 288 flow [2023-08-31 01:30:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:30:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:30:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-08-31 01:30:28,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945795988049509 [2023-08-31 01:30:28,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-08-31 01:30:28,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-08-31 01:30:28,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:28,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-08-31 01:30:28,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:29,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:29,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:29,004 INFO L175 Difference]: Start difference. First operand has 41 places, 61 transitions, 154 flow. Second operand 3 states and 1849 transitions. [2023-08-31 01:30:29,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 288 flow [2023-08-31 01:30:29,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:30:29,006 INFO L231 Difference]: Finished difference. Result has 43 places, 64 transitions, 180 flow [2023-08-31 01:30:29,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=64} [2023-08-31 01:30:29,007 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-08-31 01:30:29,007 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 64 transitions, 180 flow [2023-08-31 01:30:29,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:29,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:29,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:29,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:30:29,009 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)] === [2023-08-31 01:30:29,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash 634694811, now seen corresponding path program 1 times [2023-08-31 01:30:29,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:29,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750725030] [2023-08-31 01:30:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:29,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:30:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:29,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750725030] [2023-08-31 01:30:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750725030] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:30:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437291273] [2023-08-31 01:30:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:29,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:29,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:30:29,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:30:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:30,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:30:30,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:30:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:30:30,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:30:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:30:30,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437291273] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:30:30,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:30:30,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-31 01:30:30,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857942901] [2023-08-31 01:30:30,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:30:30,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:30:30,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:30:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:30:30,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1562 [2023-08-31 01:30:30,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 64 transitions, 180 flow. Second operand has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:30,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:30,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1562 [2023-08-31 01:30:30,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:32,181 INFO L130 PetriNetUnfolder]: 873/1132 cut-off events. [2023-08-31 01:30:32,182 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 01:30:32,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1132 events. 873/1132 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2580 event pairs, 333 based on Foata normal form. 9/604 useless extension candidates. Maximal degree in co-relation 2268. Up to 1097 conditions per place. [2023-08-31 01:30:32,186 INFO L137 encePairwiseOnDemand]: 1537/1562 looper letters, 46 selfloop transitions, 48 changer transitions 0/94 dead transitions. [2023-08-31 01:30:32,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 464 flow [2023-08-31 01:30:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:30:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:30:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4692 transitions. [2023-08-31 01:30:32,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37548015364916776 [2023-08-31 01:30:32,198 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4692 transitions. [2023-08-31 01:30:32,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4692 transitions. [2023-08-31 01:30:32,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:32,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4692 transitions. [2023-08-31 01:30:32,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 586.5) internal successors, (4692), 8 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:32,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1562.0) internal successors, (14058), 9 states have internal predecessors, (14058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:32,231 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1562.0) internal successors, (14058), 9 states have internal predecessors, (14058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:32,231 INFO L175 Difference]: Start difference. First operand has 43 places, 64 transitions, 180 flow. Second operand 8 states and 4692 transitions. [2023-08-31 01:30:32,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 464 flow [2023-08-31 01:30:32,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 94 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:30:32,236 INFO L231 Difference]: Finished difference. Result has 51 places, 94 transitions, 442 flow [2023-08-31 01:30:32,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=51, PETRI_TRANSITIONS=94} [2023-08-31 01:30:32,238 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-08-31 01:30:32,238 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 94 transitions, 442 flow [2023-08-31 01:30:32,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:32,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:32,240 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:32,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:30:32,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:32,449 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)] === [2023-08-31 01:30:32,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash -795979998, now seen corresponding path program 1 times [2023-08-31 01:30:32,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:32,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996394508] [2023-08-31 01:30:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:32,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-08-31 01:30:33,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996394508] [2023-08-31 01:30:33,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996394508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:30:33,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077200983] [2023-08-31 01:30:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:33,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:33,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:30:33,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:30:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:34,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 01:30:34,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:30:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-08-31 01:30:34,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:30:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-08-31 01:30:34,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077200983] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:30:34,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:30:34,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-31 01:30:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839395561] [2023-08-31 01:30:34,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:30:34,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:30:34,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:30:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=156, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:30:35,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1562 [2023-08-31 01:30:35,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 94 transitions, 442 flow. Second operand has 17 states, 17 states have (on average 574.8235294117648) internal successors, (9772), 17 states have internal predecessors, (9772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:35,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:35,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1562 [2023-08-31 01:30:35,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:36,803 INFO L130 PetriNetUnfolder]: 873/1165 cut-off events. [2023-08-31 01:30:36,804 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:30:36,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1165 events. 873/1165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2605 event pairs, 333 based on Foata normal form. 19/652 useless extension candidates. Maximal degree in co-relation 2434. Up to 1097 conditions per place. [2023-08-31 01:30:36,809 INFO L137 encePairwiseOnDemand]: 1537/1562 looper letters, 46 selfloop transitions, 81 changer transitions 0/127 dead transitions. [2023-08-31 01:30:36,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 870 flow [2023-08-31 01:30:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 01:30:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 01:30:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9867 transitions. [2023-08-31 01:30:36,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715824357912179 [2023-08-31 01:30:36,834 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9867 transitions. [2023-08-31 01:30:36,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9867 transitions. [2023-08-31 01:30:36,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:36,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9867 transitions. [2023-08-31 01:30:36,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 580.4117647058823) internal successors, (9867), 17 states have internal predecessors, (9867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:36,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1562.0) internal successors, (28116), 18 states have internal predecessors, (28116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:36,898 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1562.0) internal successors, (28116), 18 states have internal predecessors, (28116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:36,899 INFO L175 Difference]: Start difference. First operand has 51 places, 94 transitions, 442 flow. Second operand 17 states and 9867 transitions. [2023-08-31 01:30:36,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 870 flow [2023-08-31 01:30:36,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 127 transitions, 752 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-08-31 01:30:36,908 INFO L231 Difference]: Finished difference. Result has 66 places, 127 transitions, 730 flow [2023-08-31 01:30:36,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=730, PETRI_PLACES=66, PETRI_TRANSITIONS=127} [2023-08-31 01:30:36,910 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2023-08-31 01:30:36,910 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 127 transitions, 730 flow [2023-08-31 01:30:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 574.8235294117648) internal successors, (9772), 17 states have internal predecessors, (9772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:30:36,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:36,914 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:36,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 01:30:37,124 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 [2023-08-31 01:30:37,125 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)] === [2023-08-31 01:30:37,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash 228461301, now seen corresponding path program 2 times [2023-08-31 01:30:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:37,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306319318] [2023-08-31 01:30:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-08-31 01:30:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306319318] [2023-08-31 01:30:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306319318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:30:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587707684] [2023-08-31 01:30:38,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:30:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:38,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:30:38,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:30:38,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:30:38,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:30:38,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-31 01:30:38,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:31:35,333 WARN L222 SmtUtils]: Spent 47.83s on a formula simplification. DAG size of input: 191 DAG size of output: 191 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:31:36,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:31:36,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:31:36,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:31:36,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:31:36,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:31:36,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:31:46,747 WARN L222 SmtUtils]: Spent 10.56s on a formula simplification. DAG size of input: 1726 DAG size of output: 1059 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-31 01:31:46,750 INFO L321 Elim1Store]: treesize reduction 1396, result has 59.5 percent of original size [2023-08-31 01:31:46,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 6 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 400 case distinctions, treesize of input 1529 treesize of output 3336 Killed by 15