./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.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/popl20-bad-commit-1.wvr-bad.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 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 --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 02:11:38,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 02:11:38,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 02:11:38,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 02:11:38,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 02:11:38,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 02:11:38,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 02:11:38,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 02:11:38,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 02:11:38,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 02:11:38,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 02:11:38,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 02:11:38,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 02:11:38,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 02:11:38,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 02:11:38,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 02:11:38,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 02:11:38,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 02:11:38,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 02:11:38,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 02:11:38,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 02:11:38,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 02:11:38,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 02:11:38,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 02:11:38,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 02:11:38,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 02:11:38,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 02:11:38,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 02:11:38,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 02:11:38,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 02:11:38,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 02:11:38,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 02:11:38,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 02:11:38,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 02:11:38,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 02:11:38,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 02:11:38,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 02:11:38,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 02:11:38,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 02:11:38,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 02:11:38,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 02:11:38,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 02:11:38,822 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 02:11:38,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 02:11:38,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 02:11:38,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 02:11:38,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 02:11:38,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 02:11:38,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 02:11:38,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 02:11:38,825 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 02:11:38,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 02:11:38,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 02:11:38,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 02:11:38,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:11:38,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 02:11:38,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 02:11:38,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 02:11:38,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 02:11:38,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 02:11:38,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 02:11:38,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 02:11:38,829 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 02:11:38,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 02:11:38,829 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 02:11:38,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83c7202603a0719c5812e4d7043f4665de4d954c89c656bd6312ac9e8fdcb494 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 02:11:39,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 02:11:39,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 02:11:39,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 02:11:39,084 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 02:11:39,085 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 02:11:39,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-31 02:11:39,960 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 02:11:40,170 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 02:11:40,171 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-1.wvr-bad.c [2023-08-31 02:11:40,180 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ffc78d4/6a1aa25602bc4096ad8774315b8b0f65/FLAGdc7ec1eef [2023-08-31 02:11:40,189 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ffc78d4/6a1aa25602bc4096ad8774315b8b0f65 [2023-08-31 02:11:40,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 02:11:40,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 02:11:40,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 02:11:40,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 02:11:40,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 02:11:40,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a01b7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40, skipping insertion in model container [2023-08-31 02:11:40,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 02:11:40,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 02:11:40,324 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-bad-commit-1.wvr-bad.c[5161,5174] [2023-08-31 02:11:40,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:11:40,336 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 02:11:40,356 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-bad-commit-1.wvr-bad.c[5161,5174] [2023-08-31 02:11:40,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 02:11:40,363 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:11:40,363 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 02:11:40,367 INFO L208 MainTranslator]: Completed translation [2023-08-31 02:11:40,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40 WrapperNode [2023-08-31 02:11:40,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 02:11:40,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 02:11:40,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 02:11:40,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 02:11:40,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,401 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 350 [2023-08-31 02:11:40,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 02:11:40,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 02:11:40,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 02:11:40,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 02:11:40,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 02:11:40,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 02:11:40,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 02:11:40,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 02:11:40,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (1/1) ... [2023-08-31 02:11:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 02:11:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:11:40,486 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 02:11:40,507 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 02:11:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 02:11:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 02:11:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 02:11:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 02:11:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 02:11:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 02:11:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 02:11:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 02:11:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 02:11:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 02:11:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 02:11:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 02:11:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 02:11:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 02:11:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 02:11:40,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 02:11:40,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 02:11:40,518 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 02:11:40,633 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 02:11:40,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 02:11:41,031 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 02:11:41,194 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 02:11:41,195 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 02:11:41,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:11:41 BoogieIcfgContainer [2023-08-31 02:11:41,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 02:11:41,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 02:11:41,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 02:11:41,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 02:11:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 02:11:40" (1/3) ... [2023-08-31 02:11:41,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07706e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:11:41, skipping insertion in model container [2023-08-31 02:11:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:11:40" (2/3) ... [2023-08-31 02:11:41,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07706e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 02:11:41, skipping insertion in model container [2023-08-31 02:11:41,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:11:41" (3/3) ... [2023-08-31 02:11:41,209 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-1.wvr-bad.c [2023-08-31 02:11:41,214 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 02:11:41,220 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 02:11:41,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 02:11:41,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 02:11:41,295 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 02:11:41,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 267 transitions, 558 flow [2023-08-31 02:11:41,424 INFO L130 PetriNetUnfolder]: 27/264 cut-off events. [2023-08-31 02:11:41,425 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:11:41,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 27/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 224. Up to 6 conditions per place. [2023-08-31 02:11:41,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 267 transitions, 558 flow [2023-08-31 02:11:41,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 254 transitions, 526 flow [2023-08-31 02:11:41,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 02:11:41,444 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 254 transitions, 526 flow [2023-08-31 02:11:41,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 254 transitions, 526 flow [2023-08-31 02:11:41,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 254 transitions, 526 flow [2023-08-31 02:11:41,490 INFO L130 PetriNetUnfolder]: 27/254 cut-off events. [2023-08-31 02:11:41,491 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:11:41,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 27/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 224. Up to 6 conditions per place. [2023-08-31 02:11:41,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 2700 [2023-08-31 02:11:48,872 INFO L134 LiptonReduction]: Checked pairs total: 2578 [2023-08-31 02:11:48,872 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-31 02:11:48,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 02:11:48,888 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;@3d5faf45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 02:11:48,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 02:11:48,894 INFO L130 PetriNetUnfolder]: 6/24 cut-off events. [2023-08-31 02:11:48,894 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 02:11:48,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:48,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:48,895 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 02:11:48,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1084146320, now seen corresponding path program 1 times [2023-08-31 02:11:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:48,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305714301] [2023-08-31 02:11:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:49,368 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 02:11:49,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305714301] [2023-08-31 02:11:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305714301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:49,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:49,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 02:11:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910650820] [2023-08-31 02:11:49,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:11:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:11:49,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 02:11:49,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 544 [2023-08-31 02:11:49,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 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) [2023-08-31 02:11:49,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:49,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 544 [2023-08-31 02:11:49,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:49,557 INFO L130 PetriNetUnfolder]: 164/251 cut-off events. [2023-08-31 02:11:49,557 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-31 02:11:49,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 251 events. 164/251 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 606 event pairs, 37 based on Foata normal form. 1/161 useless extension candidates. Maximal degree in co-relation 376. Up to 167 conditions per place. [2023-08-31 02:11:49,560 INFO L137 encePairwiseOnDemand]: 539/544 looper letters, 36 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2023-08-31 02:11:49,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 197 flow [2023-08-31 02:11:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:11:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:11:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2023-08-31 02:11:49,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46139705882352944 [2023-08-31 02:11:49,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2023-08-31 02:11:49,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2023-08-31 02:11:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:49,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2023-08-31 02:11:49,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 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 02:11:49,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 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 02:11:49,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 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 02:11:49,594 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 3 states and 753 transitions. [2023-08-31 02:11:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 197 flow [2023-08-31 02:11:49,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 02:11:49,599 INFO L231 Difference]: Finished difference. Result has 26 places, 28 transitions, 82 flow [2023-08-31 02:11:49,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=28} [2023-08-31 02:11:49,604 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-31 02:11:49,605 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 28 transitions, 82 flow [2023-08-31 02:11:49,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 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) [2023-08-31 02:11:49,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:49,608 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] [2023-08-31 02:11:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 02:11:49,609 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 02:11:49,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash 764426050, now seen corresponding path program 1 times [2023-08-31 02:11:49,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:49,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676702060] [2023-08-31 02:11:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:49,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:49,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676702060] [2023-08-31 02:11:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676702060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:49,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 02:11:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672038484] [2023-08-31 02:11:49,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:49,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 02:11:49,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:49,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 02:11:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 02:11:49,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 544 [2023-08-31 02:11:49,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:49,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:49,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 544 [2023-08-31 02:11:49,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:50,033 INFO L130 PetriNetUnfolder]: 146/229 cut-off events. [2023-08-31 02:11:50,034 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-31 02:11:50,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 229 events. 146/229 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 557 event pairs, 37 based on Foata normal form. 14/240 useless extension candidates. Maximal degree in co-relation 175. Up to 145 conditions per place. [2023-08-31 02:11:50,036 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 34 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2023-08-31 02:11:50,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 179 flow [2023-08-31 02:11:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 02:11:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 02:11:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2023-08-31 02:11:50,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45036764705882354 [2023-08-31 02:11:50,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2023-08-31 02:11:50,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2023-08-31 02:11:50,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:50,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2023-08-31 02:11:50,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 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 02:11:50,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 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 02:11:50,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 544.0) internal successors, (2176), 4 states have internal predecessors, (2176), 0 states have call successors, (0), 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 02:11:50,043 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 82 flow. Second operand 3 states and 735 transitions. [2023-08-31 02:11:50,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 179 flow [2023-08-31 02:11:50,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 38 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 02:11:50,045 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 80 flow [2023-08-31 02:11:50,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-31 02:11:50,046 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-08-31 02:11:50,046 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 80 flow [2023-08-31 02:11:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 02:11:50,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:50,046 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] [2023-08-31 02:11:50,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 02:11:50,047 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 02:11:50,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1012909974, now seen corresponding path program 1 times [2023-08-31 02:11:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840076413] [2023-08-31 02:11:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:50,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840076413] [2023-08-31 02:11:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840076413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:50,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:50,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:11:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652486338] [2023-08-31 02:11:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:11:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:11:50,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:11:50,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 544 [2023-08-31 02:11:50,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 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 02:11:50,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:50,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 544 [2023-08-31 02:11:50,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:50,399 INFO L130 PetriNetUnfolder]: 263/429 cut-off events. [2023-08-31 02:11:50,400 INFO L131 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2023-08-31 02:11:50,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 429 events. 263/429 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1282 event pairs, 174 based on Foata normal form. 28/451 useless extension candidates. Maximal degree in co-relation 350. Up to 230 conditions per place. [2023-08-31 02:11:50,401 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 48 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-31 02:11:50,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 51 transitions, 246 flow [2023-08-31 02:11:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:11:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:11:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 941 transitions. [2023-08-31 02:11:50,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43244485294117646 [2023-08-31 02:11:50,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 941 transitions. [2023-08-31 02:11:50,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 941 transitions. [2023-08-31 02:11:50,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:50,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 941 transitions. [2023-08-31 02:11:50,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 235.25) internal successors, (941), 4 states have internal predecessors, (941), 0 states have call successors, (0), 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 02:11:50,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 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 02:11:50,409 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 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 02:11:50,409 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 80 flow. Second operand 4 states and 941 transitions. [2023-08-31 02:11:50,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 51 transitions, 246 flow [2023-08-31 02:11:50,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 51 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 02:11:50,411 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 96 flow [2023-08-31 02:11:50,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-31 02:11:50,411 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-08-31 02:11:50,412 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 96 flow [2023-08-31 02:11:50,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 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 02:11:50,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:50,412 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] [2023-08-31 02:11:50,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 02:11:50,413 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 02:11:50,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash 305019443, now seen corresponding path program 1 times [2023-08-31 02:11:50,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:50,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967044897] [2023-08-31 02:11:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:50,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967044897] [2023-08-31 02:11:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967044897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 02:11:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 02:11:50,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 02:11:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308655931] [2023-08-31 02:11:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 02:11:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 02:11:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 02:11:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 02:11:50,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 544 [2023-08-31 02:11:50,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 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 02:11:50,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:50,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 544 [2023-08-31 02:11:50,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:50,662 INFO L130 PetriNetUnfolder]: 261/441 cut-off events. [2023-08-31 02:11:50,662 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-08-31 02:11:50,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 441 events. 261/441 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1364 event pairs, 114 based on Foata normal form. 44/480 useless extension candidates. Maximal degree in co-relation 884. Up to 253 conditions per place. [2023-08-31 02:11:50,664 INFO L137 encePairwiseOnDemand]: 541/544 looper letters, 49 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-08-31 02:11:50,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 272 flow [2023-08-31 02:11:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:11:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:11:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 967 transitions. [2023-08-31 02:11:50,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443933823529412 [2023-08-31 02:11:50,667 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 967 transitions. [2023-08-31 02:11:50,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 967 transitions. [2023-08-31 02:11:50,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:50,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 967 transitions. [2023-08-31 02:11:50,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 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 02:11:50,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 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 02:11:50,672 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 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 02:11:50,672 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 96 flow. Second operand 4 states and 967 transitions. [2023-08-31 02:11:50,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 272 flow [2023-08-31 02:11:50,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 262 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 02:11:50,674 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 104 flow [2023-08-31 02:11:50,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-31 02:11:50,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2023-08-31 02:11:50,675 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 104 flow [2023-08-31 02:11:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 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 02:11:50,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:50,676 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] [2023-08-31 02:11:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 02:11:50,676 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 02:11:50,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1752549565, now seen corresponding path program 1 times [2023-08-31 02:11:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102500272] [2023-08-31 02:11:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:11:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:50,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102500272] [2023-08-31 02:11:50,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102500272] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:11:50,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628110892] [2023-08-31 02:11:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:50,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:11:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:11:50,853 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 02:11:50,854 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 02:11:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:50,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 02:11:50,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:11:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:11:51,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:11:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:11:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628110892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:11:51,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:11:51,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-31 02:11:51,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994555364] [2023-08-31 02:11:51,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:11:51,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 02:11:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:51,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 02:11:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-31 02:11:51,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 544 [2023-08-31 02:11:51,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 240.0) internal successors, (1680), 7 states have internal predecessors, (1680), 0 states have call successors, (0), 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 02:11:51,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:51,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 544 [2023-08-31 02:11:51,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:51,544 INFO L130 PetriNetUnfolder]: 270/435 cut-off events. [2023-08-31 02:11:51,544 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-08-31 02:11:51,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 435 events. 270/435 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1355 event pairs, 53 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1108. Up to 281 conditions per place. [2023-08-31 02:11:51,546 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 42 selfloop transitions, 4 changer transitions 3/49 dead transitions. [2023-08-31 02:11:51,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 256 flow [2023-08-31 02:11:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 02:11:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 02:11:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 975 transitions. [2023-08-31 02:11:51,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44806985294117646 [2023-08-31 02:11:51,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 975 transitions. [2023-08-31 02:11:51,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 975 transitions. [2023-08-31 02:11:51,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:51,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 975 transitions. [2023-08-31 02:11:51,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 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 02:11:51,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 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 02:11:51,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 544.0) internal successors, (2720), 5 states have internal predecessors, (2720), 0 states have call successors, (0), 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 02:11:51,554 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 104 flow. Second operand 4 states and 975 transitions. [2023-08-31 02:11:51,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 256 flow [2023-08-31 02:11:51,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 02:11:51,556 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 129 flow [2023-08-31 02:11:51,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-31 02:11:51,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-31 02:11:51,557 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 129 flow [2023-08-31 02:11:51,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.0) internal successors, (1680), 7 states have internal predecessors, (1680), 0 states have call successors, (0), 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 02:11:51,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:51,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:11:51,580 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 02:11:51,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:11:51,770 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)] === [2023-08-31 02:11:51,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash 583728145, now seen corresponding path program 2 times [2023-08-31 02:11:51,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:51,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227876690] [2023-08-31 02:11:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:51,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:11:52,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:52,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227876690] [2023-08-31 02:11:52,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227876690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:11:52,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401582946] [2023-08-31 02:11:52,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 02:11:52,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:11:52,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:11:52,069 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 02:11:52,071 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 02:11:52,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:11:52,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:11:52,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-31 02:11:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:11:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:11:52,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:11:52,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:11:52,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 266 treesize of output 272 [2023-08-31 02:11:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:11:53,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401582946] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:11:53,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:11:53,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-31 02:11:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784895300] [2023-08-31 02:11:53,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:11:53,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 02:11:53,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 02:11:53,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-31 02:11:53,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 544 [2023-08-31 02:11:53,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 129 flow. Second operand has 13 states, 13 states have (on average 200.46153846153845) internal successors, (2606), 13 states have internal predecessors, (2606), 0 states have call successors, (0), 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 02:11:53,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:11:53,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 544 [2023-08-31 02:11:53,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:11:53,737 INFO L130 PetriNetUnfolder]: 437/748 cut-off events. [2023-08-31 02:11:53,737 INFO L131 PetriNetUnfolder]: For 580/580 co-relation queries the response was YES. [2023-08-31 02:11:53,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 748 events. 437/748 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2956 event pairs, 125 based on Foata normal form. 56/798 useless extension candidates. Maximal degree in co-relation 1921. Up to 196 conditions per place. [2023-08-31 02:11:53,740 INFO L137 encePairwiseOnDemand]: 535/544 looper letters, 66 selfloop transitions, 12 changer transitions 21/99 dead transitions. [2023-08-31 02:11:53,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 99 transitions, 516 flow [2023-08-31 02:11:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 02:11:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 02:11:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1862 transitions. [2023-08-31 02:11:53,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38031045751633985 [2023-08-31 02:11:53,744 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1862 transitions. [2023-08-31 02:11:53,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1862 transitions. [2023-08-31 02:11:53,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:11:53,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1862 transitions. [2023-08-31 02:11:53,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.88888888888889) internal successors, (1862), 9 states have internal predecessors, (1862), 0 states have call successors, (0), 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 02:11:53,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 544.0) internal successors, (5440), 10 states have internal predecessors, (5440), 0 states have call successors, (0), 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 02:11:53,754 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 544.0) internal successors, (5440), 10 states have internal predecessors, (5440), 0 states have call successors, (0), 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 02:11:53,754 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 129 flow. Second operand 9 states and 1862 transitions. [2023-08-31 02:11:53,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 99 transitions, 516 flow [2023-08-31 02:11:53,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 502 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 02:11:53,758 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 196 flow [2023-08-31 02:11:53,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-31 02:11:53,760 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-08-31 02:11:53,760 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 196 flow [2023-08-31 02:11:53,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 200.46153846153845) internal successors, (2606), 13 states have internal predecessors, (2606), 0 states have call successors, (0), 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 02:11:53,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:11:53,762 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] [2023-08-31 02:11:53,769 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 02:11:53,967 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,SelfDestructingSolverStorable5 [2023-08-31 02:11:53,967 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)] === [2023-08-31 02:11:53,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:11:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1837674817, now seen corresponding path program 1 times [2023-08-31 02:11:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:11:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656343922] [2023-08-31 02:11:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:53,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:11:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:11:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656343922] [2023-08-31 02:11:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656343922] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:11:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764681294] [2023-08-31 02:11:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:11:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:11:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:11:54,692 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 02:11:54,705 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 02:11:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:11:54,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-31 02:11:54,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:11:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:55,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:11:56,005 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:11:56,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 354 treesize of output 458 [2023-08-31 02:11:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:11:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764681294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:11:59,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:11:59,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-31 02:11:59,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944975405] [2023-08-31 02:11:59,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:11:59,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 02:11:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:11:59,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 02:11:59,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-08-31 02:12:00,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 544 [2023-08-31 02:12:00,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 196 flow. Second operand has 17 states, 17 states have (on average 187.47058823529412) internal successors, (3187), 17 states have internal predecessors, (3187), 0 states have call successors, (0), 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 02:12:00,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:00,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 544 [2023-08-31 02:12:00,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:01,283 INFO L130 PetriNetUnfolder]: 980/1656 cut-off events. [2023-08-31 02:12:01,283 INFO L131 PetriNetUnfolder]: For 2039/2039 co-relation queries the response was YES. [2023-08-31 02:12:01,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 1656 events. 980/1656 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8028 event pairs, 222 based on Foata normal form. 6/1660 useless extension candidates. Maximal degree in co-relation 2917. Up to 479 conditions per place. [2023-08-31 02:12:01,290 INFO L137 encePairwiseOnDemand]: 537/544 looper letters, 76 selfloop transitions, 28 changer transitions 29/133 dead transitions. [2023-08-31 02:12:01,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 133 transitions, 829 flow [2023-08-31 02:12:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 02:12:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 02:12:01,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2326 transitions. [2023-08-31 02:12:01,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35631127450980393 [2023-08-31 02:12:01,296 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2326 transitions. [2023-08-31 02:12:01,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2326 transitions. [2023-08-31 02:12:01,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:01,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2326 transitions. [2023-08-31 02:12:01,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 193.83333333333334) internal successors, (2326), 12 states have internal predecessors, (2326), 0 states have call successors, (0), 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 02:12:01,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 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 02:12:01,306 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 544.0) internal successors, (7072), 13 states have internal predecessors, (7072), 0 states have call successors, (0), 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 02:12:01,306 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 196 flow. Second operand 12 states and 2326 transitions. [2023-08-31 02:12:01,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 133 transitions, 829 flow [2023-08-31 02:12:01,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 133 transitions, 817 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-31 02:12:01,311 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 454 flow [2023-08-31 02:12:01,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=454, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-08-31 02:12:01,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2023-08-31 02:12:01,312 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 454 flow [2023-08-31 02:12:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 187.47058823529412) internal successors, (3187), 17 states have internal predecessors, (3187), 0 states have call successors, (0), 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 02:12:01,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:01,314 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] [2023-08-31 02:12:01,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-31 02:12:01,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:01,522 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)] === [2023-08-31 02:12:01,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:01,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1641038422, now seen corresponding path program 1 times [2023-08-31 02:12:01,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:01,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053282145] [2023-08-31 02:12:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:01,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:12:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053282145] [2023-08-31 02:12:01,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053282145] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:12:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921177787] [2023-08-31 02:12:01,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:01,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:12:01,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:12:01,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 02:12:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:01,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 02:12:01,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:12:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:12:02,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:12:02,842 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:12:02,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 505 treesize of output 536 [2023-08-31 02:12:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:12:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921177787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:12:03,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:12:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-31 02:12:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847972979] [2023-08-31 02:12:03,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:12:03,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 02:12:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 02:12:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-08-31 02:12:03,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 544 [2023-08-31 02:12:03,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 454 flow. Second operand has 11 states, 11 states have (on average 210.0) internal successors, (2310), 11 states have internal predecessors, (2310), 0 states have call successors, (0), 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 02:12:03,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:03,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 544 [2023-08-31 02:12:03,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:03,907 INFO L130 PetriNetUnfolder]: 980/1686 cut-off events. [2023-08-31 02:12:03,907 INFO L131 PetriNetUnfolder]: For 3197/3197 co-relation queries the response was YES. [2023-08-31 02:12:03,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 1686 events. 980/1686 cut-off events. For 3197/3197 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8328 event pairs, 270 based on Foata normal form. 60/1744 useless extension candidates. Maximal degree in co-relation 4593. Up to 537 conditions per place. [2023-08-31 02:12:03,913 INFO L137 encePairwiseOnDemand]: 540/544 looper letters, 57 selfloop transitions, 14 changer transitions 13/84 dead transitions. [2023-08-31 02:12:03,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 671 flow [2023-08-31 02:12:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 02:12:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 02:12:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1083 transitions. [2023-08-31 02:12:03,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981617647058823 [2023-08-31 02:12:03,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1083 transitions. [2023-08-31 02:12:03,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1083 transitions. [2023-08-31 02:12:03,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:03,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1083 transitions. [2023-08-31 02:12:03,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 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 02:12:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 544.0) internal successors, (3264), 6 states have internal predecessors, (3264), 0 states have call successors, (0), 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 02:12:03,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 544.0) internal successors, (3264), 6 states have internal predecessors, (3264), 0 states have call successors, (0), 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 02:12:03,930 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 454 flow. Second operand 5 states and 1083 transitions. [2023-08-31 02:12:03,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 671 flow [2023-08-31 02:12:03,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 601 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-31 02:12:03,935 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 385 flow [2023-08-31 02:12:03,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-08-31 02:12:03,937 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-08-31 02:12:03,937 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 385 flow [2023-08-31 02:12:03,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.0) internal successors, (2310), 11 states have internal predecessors, (2310), 0 states have call successors, (0), 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 02:12:03,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:03,939 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:12:03,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-31 02:12:04,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:04,143 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)] === [2023-08-31 02:12:04,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:04,144 INFO L85 PathProgramCache]: Analyzing trace with hash 704380673, now seen corresponding path program 2 times [2023-08-31 02:12:04,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:04,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121187139] [2023-08-31 02:12:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:12:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:04,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121187139] [2023-08-31 02:12:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121187139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:12:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902723172] [2023-08-31 02:12:04,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 02:12:04,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:04,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:12:04,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:12:04,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 02:12:04,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:12:04,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:12:04,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-31 02:12:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:12:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:12:04,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:12:05,664 INFO L321 Elim1Store]: treesize reduction 38, result has 77.5 percent of original size [2023-08-31 02:12:05,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 550 treesize of output 600 [2023-08-31 02:12:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:12:06,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902723172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:12:06,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:12:06,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-31 02:12:06,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7288379] [2023-08-31 02:12:06,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:12:06,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 02:12:06,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 02:12:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-08-31 02:12:06,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 544 [2023-08-31 02:12:06,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 385 flow. Second operand has 14 states, 14 states have (on average 185.85714285714286) internal successors, (2602), 14 states have internal predecessors, (2602), 0 states have call successors, (0), 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 02:12:06,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:06,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 544 [2023-08-31 02:12:06,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:07,557 INFO L130 PetriNetUnfolder]: 1766/3030 cut-off events. [2023-08-31 02:12:07,557 INFO L131 PetriNetUnfolder]: For 5585/5585 co-relation queries the response was YES. [2023-08-31 02:12:07,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9177 conditions, 3030 events. 1766/3030 cut-off events. For 5585/5585 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 16713 event pairs, 384 based on Foata normal form. 72/3100 useless extension candidates. Maximal degree in co-relation 7922. Up to 546 conditions per place. [2023-08-31 02:12:07,568 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 93 selfloop transitions, 34 changer transitions 64/191 dead transitions. [2023-08-31 02:12:07,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 191 transitions, 1307 flow [2023-08-31 02:12:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-31 02:12:07,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-31 02:12:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3439 transitions. [2023-08-31 02:12:07,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512050653594771 [2023-08-31 02:12:07,574 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3439 transitions. [2023-08-31 02:12:07,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3439 transitions. [2023-08-31 02:12:07,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:07,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3439 transitions. [2023-08-31 02:12:07,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 191.05555555555554) internal successors, (3439), 18 states have internal predecessors, (3439), 0 states have call successors, (0), 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 02:12:07,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 544.0) internal successors, (10336), 19 states have internal predecessors, (10336), 0 states have call successors, (0), 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 02:12:07,589 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 544.0) internal successors, (10336), 19 states have internal predecessors, (10336), 0 states have call successors, (0), 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 02:12:07,589 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 385 flow. Second operand 18 states and 3439 transitions. [2023-08-31 02:12:07,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 191 transitions, 1307 flow [2023-08-31 02:12:07,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 191 transitions, 1273 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 02:12:07,600 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 589 flow [2023-08-31 02:12:07,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=589, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2023-08-31 02:12:07,601 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-08-31 02:12:07,601 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 589 flow [2023-08-31 02:12:07,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 185.85714285714286) internal successors, (2602), 14 states have internal predecessors, (2602), 0 states have call successors, (0), 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 02:12:07,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:07,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 02:12:07,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-31 02:12:07,807 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 [2023-08-31 02:12:07,808 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)] === [2023-08-31 02:12:07,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash 712731656, now seen corresponding path program 1 times [2023-08-31 02:12:07,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:07,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126177386] [2023-08-31 02:12:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:07,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:12:08,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:08,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126177386] [2023-08-31 02:12:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126177386] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:12:08,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385076209] [2023-08-31 02:12:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:08,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:08,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:12:08,135 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:12:08,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 02:12:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:08,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 02:12:08,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:12:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:12:08,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:12:09,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:12:09,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 399 treesize of output 506 [2023-08-31 02:12:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:12:11,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385076209] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:12:11,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:12:11,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-08-31 02:12:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055583314] [2023-08-31 02:12:11,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:12:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-31 02:12:11,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-31 02:12:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-31 02:12:11,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 544 [2023-08-31 02:12:11,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 589 flow. Second operand has 16 states, 16 states have (on average 190.125) internal successors, (3042), 16 states have internal predecessors, (3042), 0 states have call successors, (0), 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 02:12:11,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:11,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 544 [2023-08-31 02:12:11,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:12,299 INFO L130 PetriNetUnfolder]: 1822/3231 cut-off events. [2023-08-31 02:12:12,299 INFO L131 PetriNetUnfolder]: For 8771/8771 co-relation queries the response was YES. [2023-08-31 02:12:12,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9861 conditions, 3231 events. 1822/3231 cut-off events. For 8771/8771 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19039 event pairs, 414 based on Foata normal form. 196/3427 useless extension candidates. Maximal degree in co-relation 8393. Up to 602 conditions per place. [2023-08-31 02:12:12,311 INFO L137 encePairwiseOnDemand]: 538/544 looper letters, 96 selfloop transitions, 28 changer transitions 48/172 dead transitions. [2023-08-31 02:12:12,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 172 transitions, 1342 flow [2023-08-31 02:12:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 02:12:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 02:12:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2555 transitions. [2023-08-31 02:12:12,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3612839366515837 [2023-08-31 02:12:12,317 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2555 transitions. [2023-08-31 02:12:12,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2555 transitions. [2023-08-31 02:12:12,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:12,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2555 transitions. [2023-08-31 02:12:12,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 196.53846153846155) internal successors, (2555), 13 states have internal predecessors, (2555), 0 states have call successors, (0), 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 02:12:12,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 544.0) internal successors, (7616), 14 states have internal predecessors, (7616), 0 states have call successors, (0), 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 02:12:12,328 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 544.0) internal successors, (7616), 14 states have internal predecessors, (7616), 0 states have call successors, (0), 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 02:12:12,329 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 589 flow. Second operand 13 states and 2555 transitions. [2023-08-31 02:12:12,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 172 transitions, 1342 flow [2023-08-31 02:12:12,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 172 transitions, 1220 flow, removed 37 selfloop flow, removed 9 redundant places. [2023-08-31 02:12:12,349 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 525 flow [2023-08-31 02:12:12,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=525, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-08-31 02:12:12,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2023-08-31 02:12:12,349 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 525 flow [2023-08-31 02:12:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.125) internal successors, (3042), 16 states have internal predecessors, (3042), 0 states have call successors, (0), 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 02:12:12,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:12,350 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] [2023-08-31 02:12:12,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-31 02:12:12,557 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 [2023-08-31 02:12:12,557 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)] === [2023-08-31 02:12:12,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash 998744017, now seen corresponding path program 1 times [2023-08-31 02:12:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187007333] [2023-08-31 02:12:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:12:14,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:14,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187007333] [2023-08-31 02:12:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187007333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:12:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029102788] [2023-08-31 02:12:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:14,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:14,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:12:14,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 02:12:14,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 02:12:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:14,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 02:12:14,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:12:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:12:14,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:12:16,666 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:12:16,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 410 treesize of output 581 [2023-08-31 02:12:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 02:12:19,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029102788] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:12:19,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:12:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 17 [2023-08-31 02:12:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497643197] [2023-08-31 02:12:19,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:12:19,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 02:12:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:12:19,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 02:12:19,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2023-08-31 02:12:20,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 544 [2023-08-31 02:12:20,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 525 flow. Second operand has 19 states, 19 states have (on average 180.89473684210526) internal successors, (3437), 19 states have internal predecessors, (3437), 0 states have call successors, (0), 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 02:12:20,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:12:20,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 544 [2023-08-31 02:12:20,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:12:22,555 INFO L130 PetriNetUnfolder]: 1834/3147 cut-off events. [2023-08-31 02:12:22,555 INFO L131 PetriNetUnfolder]: For 6399/6399 co-relation queries the response was YES. [2023-08-31 02:12:22,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 3147 events. 1834/3147 cut-off events. For 6399/6399 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17578 event pairs, 293 based on Foata normal form. 9/3156 useless extension candidates. Maximal degree in co-relation 8225. Up to 847 conditions per place. [2023-08-31 02:12:22,570 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 75 selfloop transitions, 51 changer transitions 43/169 dead transitions. [2023-08-31 02:12:22,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 169 transitions, 1303 flow [2023-08-31 02:12:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-31 02:12:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-31 02:12:22,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3150 transitions. [2023-08-31 02:12:22,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3406141868512111 [2023-08-31 02:12:22,577 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3150 transitions. [2023-08-31 02:12:22,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3150 transitions. [2023-08-31 02:12:22,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:12:22,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3150 transitions. [2023-08-31 02:12:22,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 185.2941176470588) internal successors, (3150), 17 states have internal predecessors, (3150), 0 states have call successors, (0), 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 02:12:22,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 544.0) internal successors, (9792), 18 states have internal predecessors, (9792), 0 states have call successors, (0), 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 02:12:22,590 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 544.0) internal successors, (9792), 18 states have internal predecessors, (9792), 0 states have call successors, (0), 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 02:12:22,590 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 525 flow. Second operand 17 states and 3150 transitions. [2023-08-31 02:12:22,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 169 transitions, 1303 flow [2023-08-31 02:12:22,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 169 transitions, 1247 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-31 02:12:22,601 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 850 flow [2023-08-31 02:12:22,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=850, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-08-31 02:12:22,601 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2023-08-31 02:12:22,602 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 850 flow [2023-08-31 02:12:22,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 180.89473684210526) internal successors, (3437), 19 states have internal predecessors, (3437), 0 states have call successors, (0), 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 02:12:22,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:12:22,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:12:22,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 02:12:22,807 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 [2023-08-31 02:12:22,810 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)] === [2023-08-31 02:12:22,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:12:22,810 INFO L85 PathProgramCache]: Analyzing trace with hash -230445003, now seen corresponding path program 1 times [2023-08-31 02:12:22,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:12:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156685902] [2023-08-31 02:12:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:12:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:12:23,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:12:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156685902] [2023-08-31 02:12:23,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156685902] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:12:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23320178] [2023-08-31 02:12:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:12:23,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:12:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:12:23,981 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) [2023-08-31 02:12:23,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 02:12:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:12:24,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-31 02:12:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:12:24,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-31 02:12:24,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 02:12:24,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 02:12:24,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-31 02:12:24,809 INFO L321 Elim1Store]: treesize reduction 45, result has 53.6 percent of original size [2023-08-31 02:12:24,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 104 [2023-08-31 02:12:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:12:24,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:13:05,302 WARN L222 SmtUtils]: Spent 37.34s on a formula simplification. DAG size of input: 119 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 02:13:07,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:13:07,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 51 [2023-08-31 02:13:07,135 INFO L321 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-08-31 02:13:07,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6774 treesize of output 6246 [2023-08-31 02:13:07,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:13:07,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1550 treesize of output 1463 [2023-08-31 02:13:07,321 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:13:07,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1446 treesize of output 1255 [2023-08-31 02:13:07,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:13:07,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1238 treesize of output 839 [2023-08-31 02:13:08,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:13:08,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2023-08-31 02:13:08,151 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-31 02:13:08,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 398 treesize of output 369 [2023-08-31 02:13:08,164 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 02:13:08,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 130 [2023-08-31 02:13:08,170 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 02:13:08,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-08-31 02:13:08,179 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 02:13:08,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 46 [2023-08-31 02:13:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:13:08,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23320178] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:13:08,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:13:08,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-08-31 02:13:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771244099] [2023-08-31 02:13:08,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:13:08,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-31 02:13:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:13:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-31 02:13:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=714, Unknown=9, NotChecked=0, Total=870 [2023-08-31 02:13:08,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 544 [2023-08-31 02:13:08,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 850 flow. Second operand has 30 states, 30 states have (on average 132.5) internal successors, (3975), 30 states have internal predecessors, (3975), 0 states have call successors, (0), 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 02:13:08,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:13:08,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 544 [2023-08-31 02:13:08,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:13:14,533 INFO L130 PetriNetUnfolder]: 5622/9565 cut-off events. [2023-08-31 02:13:14,533 INFO L131 PetriNetUnfolder]: For 26297/26297 co-relation queries the response was YES. [2023-08-31 02:13:14,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32208 conditions, 9565 events. 5622/9565 cut-off events. For 26297/26297 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 65731 event pairs, 777 based on Foata normal form. 15/9580 useless extension candidates. Maximal degree in co-relation 25325. Up to 2073 conditions per place. [2023-08-31 02:13:14,568 INFO L137 encePairwiseOnDemand]: 528/544 looper letters, 187 selfloop transitions, 143 changer transitions 120/450 dead transitions. [2023-08-31 02:13:14,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 450 transitions, 3879 flow [2023-08-31 02:13:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-31 02:13:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-31 02:13:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 5800 transitions. [2023-08-31 02:13:14,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2538515406162465 [2023-08-31 02:13:14,575 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 5800 transitions. [2023-08-31 02:13:14,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 5800 transitions. [2023-08-31 02:13:14,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:13:14,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 5800 transitions. [2023-08-31 02:13:14,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 138.0952380952381) internal successors, (5800), 42 states have internal predecessors, (5800), 0 states have call successors, (0), 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 02:13:14,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 544.0) internal successors, (23392), 43 states have internal predecessors, (23392), 0 states have call successors, (0), 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 02:13:14,597 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 544.0) internal successors, (23392), 43 states have internal predecessors, (23392), 0 states have call successors, (0), 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 02:13:14,597 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 850 flow. Second operand 42 states and 5800 transitions. [2023-08-31 02:13:14,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 450 transitions, 3879 flow [2023-08-31 02:13:14,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 450 transitions, 3591 flow, removed 128 selfloop flow, removed 4 redundant places. [2023-08-31 02:13:14,672 INFO L231 Difference]: Finished difference. Result has 142 places, 196 transitions, 2519 flow [2023-08-31 02:13:14,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2519, PETRI_PLACES=142, PETRI_TRANSITIONS=196} [2023-08-31 02:13:14,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2023-08-31 02:13:14,673 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 196 transitions, 2519 flow [2023-08-31 02:13:14,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 132.5) internal successors, (3975), 30 states have internal predecessors, (3975), 0 states have call successors, (0), 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 02:13:14,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:13:14,674 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 02:13:14,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-31 02:13:14,881 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 [2023-08-31 02:13:14,881 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)] === [2023-08-31 02:13:14,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:13:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1736138213, now seen corresponding path program 2 times [2023-08-31 02:13:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:13:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028076189] [2023-08-31 02:13:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:13:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:13:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:13:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:13:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:13:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028076189] [2023-08-31 02:13:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028076189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:13:15,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396227390] [2023-08-31 02:13:15,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 02:13:15,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:13:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:13:15,591 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) [2023-08-31 02:13:15,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 02:13:15,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-31 02:13:15,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:13:15,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-31 02:13:15,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:13:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:13:16,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:13:24,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:13:24,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 603 treesize of output 1120 [2023-08-31 02:13:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 02:13:44,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396227390] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:13:44,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:13:44,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-31 02:13:44,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104254871] [2023-08-31 02:13:44,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:13:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-31 02:13:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:13:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-31 02:13:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2023-08-31 02:13:45,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 544 [2023-08-31 02:13:45,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 196 transitions, 2519 flow. Second operand has 24 states, 24 states have (on average 176.66666666666666) internal successors, (4240), 24 states have internal predecessors, (4240), 0 states have call successors, (0), 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 02:13:45,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:13:45,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 544 [2023-08-31 02:13:45,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:13:56,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:14:23,697 WARN L222 SmtUtils]: Spent 24.78s on a formula simplification. DAG size of input: 113 DAG size of output: 110 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 02:14:25,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:14:28,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-31 02:14:29,183 INFO L130 PetriNetUnfolder]: 5084/8828 cut-off events. [2023-08-31 02:14:29,183 INFO L131 PetriNetUnfolder]: For 33793/33793 co-relation queries the response was YES. [2023-08-31 02:14:29,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33459 conditions, 8828 events. 5084/8828 cut-off events. For 33793/33793 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 61012 event pairs, 785 based on Foata normal form. 176/9004 useless extension candidates. Maximal degree in co-relation 32846. Up to 2626 conditions per place. [2023-08-31 02:14:29,220 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 212 selfloop transitions, 153 changer transitions 104/469 dead transitions. [2023-08-31 02:14:29,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 469 transitions, 4483 flow [2023-08-31 02:14:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-31 02:14:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-31 02:14:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6257 transitions. [2023-08-31 02:14:29,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3382893598615917 [2023-08-31 02:14:29,226 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 6257 transitions. [2023-08-31 02:14:29,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 6257 transitions. [2023-08-31 02:14:29,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:14:29,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 6257 transitions. [2023-08-31 02:14:29,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 184.02941176470588) internal successors, (6257), 34 states have internal predecessors, (6257), 0 states have call successors, (0), 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 02:14:29,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 544.0) internal successors, (19040), 35 states have internal predecessors, (19040), 0 states have call successors, (0), 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 02:14:29,245 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 544.0) internal successors, (19040), 35 states have internal predecessors, (19040), 0 states have call successors, (0), 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 02:14:29,245 INFO L175 Difference]: Start difference. First operand has 142 places, 196 transitions, 2519 flow. Second operand 34 states and 6257 transitions. [2023-08-31 02:14:29,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 469 transitions, 4483 flow [2023-08-31 02:14:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 469 transitions, 4120 flow, removed 137 selfloop flow, removed 12 redundant places. [2023-08-31 02:14:29,389 INFO L231 Difference]: Finished difference. Result has 166 places, 197 transitions, 2530 flow [2023-08-31 02:14:29,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2530, PETRI_PLACES=166, PETRI_TRANSITIONS=197} [2023-08-31 02:14:29,389 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2023-08-31 02:14:29,389 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 197 transitions, 2530 flow [2023-08-31 02:14:29,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 176.66666666666666) internal successors, (4240), 24 states have internal predecessors, (4240), 0 states have call successors, (0), 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 02:14:29,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:14:29,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:14:29,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-31 02:14:29,595 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 [2023-08-31 02:14:29,598 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)] === [2023-08-31 02:14:29,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:14:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 14320599, now seen corresponding path program 3 times [2023-08-31 02:14:29,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:14:29,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223597246] [2023-08-31 02:14:29,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:14:29,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:14:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:14:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 02:14:30,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:14:30,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223597246] [2023-08-31 02:14:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223597246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:14:30,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120893141] [2023-08-31 02:14:30,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 02:14:30,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:14:30,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:14:30,629 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) [2023-08-31 02:14:30,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-31 02:14:30,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-31 02:14:30,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:14:30,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-31 02:14:30,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:14:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 02:14:31,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:14:33,737 INFO L321 Elim1Store]: treesize reduction 122, result has 73.2 percent of original size [2023-08-31 02:14:33,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 897 treesize of output 1054 [2023-08-31 02:14:52,035 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:15:03,057 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:15:14,501 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:16:04,525 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-31 02:16:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 02:16:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120893141] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:16:14,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:16:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 17 [2023-08-31 02:16:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768031129] [2023-08-31 02:16:14,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:16:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 02:16:14,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 02:16:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-08-31 02:16:15,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 544 [2023-08-31 02:16:15,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 197 transitions, 2530 flow. Second operand has 19 states, 19 states have (on average 183.8421052631579) internal successors, (3493), 19 states have internal predecessors, (3493), 0 states have call successors, (0), 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 02:16:15,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:15,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 544 [2023-08-31 02:16:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:18,265 INFO L130 PetriNetUnfolder]: 6656/11415 cut-off events. [2023-08-31 02:16:18,265 INFO L131 PetriNetUnfolder]: For 51288/51288 co-relation queries the response was YES. [2023-08-31 02:16:18,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44809 conditions, 11415 events. 6656/11415 cut-off events. For 51288/51288 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 80786 event pairs, 1125 based on Foata normal form. 12/11416 useless extension candidates. Maximal degree in co-relation 43380. Up to 3342 conditions per place. [2023-08-31 02:16:18,328 INFO L137 encePairwiseOnDemand]: 534/544 looper letters, 168 selfloop transitions, 164 changer transitions 61/393 dead transitions. [2023-08-31 02:16:18,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 393 transitions, 4728 flow [2023-08-31 02:16:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 02:16:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 02:16:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3799 transitions. [2023-08-31 02:16:18,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34917279411764707 [2023-08-31 02:16:18,332 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3799 transitions. [2023-08-31 02:16:18,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3799 transitions. [2023-08-31 02:16:18,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:18,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3799 transitions. [2023-08-31 02:16:18,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 189.95) internal successors, (3799), 20 states have internal predecessors, (3799), 0 states have call successors, (0), 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 02:16:18,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 544.0) internal successors, (11424), 21 states have internal predecessors, (11424), 0 states have call successors, (0), 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 02:16:18,341 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 544.0) internal successors, (11424), 21 states have internal predecessors, (11424), 0 states have call successors, (0), 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 02:16:18,341 INFO L175 Difference]: Start difference. First operand has 166 places, 197 transitions, 2530 flow. Second operand 20 states and 3799 transitions. [2023-08-31 02:16:18,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 393 transitions, 4728 flow [2023-08-31 02:16:18,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 393 transitions, 4198 flow, removed 199 selfloop flow, removed 11 redundant places. [2023-08-31 02:16:18,570 INFO L231 Difference]: Finished difference. Result has 178 places, 234 transitions, 3147 flow [2023-08-31 02:16:18,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3147, PETRI_PLACES=178, PETRI_TRANSITIONS=234} [2023-08-31 02:16:18,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2023-08-31 02:16:18,571 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 234 transitions, 3147 flow [2023-08-31 02:16:18,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 183.8421052631579) internal successors, (3493), 19 states have internal predecessors, (3493), 0 states have call successors, (0), 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 02:16:18,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:18,572 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 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 02:16:18,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-31 02:16:18,777 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 [2023-08-31 02:16:18,777 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)] === [2023-08-31 02:16:18,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash -965021291, now seen corresponding path program 4 times [2023-08-31 02:16:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:18,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976491737] [2023-08-31 02:16:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:18,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 02:16:19,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976491737] [2023-08-31 02:16:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976491737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:16:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770838186] [2023-08-31 02:16:19,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 02:16:19,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:19,139 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) [2023-08-31 02:16:19,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-31 02:16:19,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 02:16:19,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:16:19,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 02:16:19,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:16:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:19,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:16:20,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:16:20,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 248 treesize of output 254 [2023-08-31 02:16:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:20,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770838186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:16:20,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:16:20,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-31 02:16:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043974046] [2023-08-31 02:16:20,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:16:20,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-31 02:16:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-31 02:16:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-31 02:16:21,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 544 [2023-08-31 02:16:21,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 234 transitions, 3147 flow. Second operand has 18 states, 18 states have (on average 183.72222222222223) internal successors, (3307), 18 states have internal predecessors, (3307), 0 states have call successors, (0), 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 02:16:21,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:21,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 544 [2023-08-31 02:16:21,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:23,570 INFO L130 PetriNetUnfolder]: 8018/13661 cut-off events. [2023-08-31 02:16:23,571 INFO L131 PetriNetUnfolder]: For 53180/53180 co-relation queries the response was YES. [2023-08-31 02:16:23,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53343 conditions, 13661 events. 8018/13661 cut-off events. For 53180/53180 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 98829 event pairs, 4089 based on Foata normal form. 192/13842 useless extension candidates. Maximal degree in co-relation 51525. Up to 7474 conditions per place. [2023-08-31 02:16:23,625 INFO L137 encePairwiseOnDemand]: 538/544 looper letters, 235 selfloop transitions, 43 changer transitions 51/329 dead transitions. [2023-08-31 02:16:23,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 329 transitions, 4491 flow [2023-08-31 02:16:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 02:16:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 02:16:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2087 transitions. [2023-08-31 02:16:23,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487633689839572 [2023-08-31 02:16:23,628 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2087 transitions. [2023-08-31 02:16:23,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2087 transitions. [2023-08-31 02:16:23,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:23,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2087 transitions. [2023-08-31 02:16:23,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 189.72727272727272) internal successors, (2087), 11 states have internal predecessors, (2087), 0 states have call successors, (0), 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 02:16:23,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 544.0) internal successors, (6528), 12 states have internal predecessors, (6528), 0 states have call successors, (0), 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 02:16:23,633 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 544.0) internal successors, (6528), 12 states have internal predecessors, (6528), 0 states have call successors, (0), 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 02:16:23,633 INFO L175 Difference]: Start difference. First operand has 178 places, 234 transitions, 3147 flow. Second operand 11 states and 2087 transitions. [2023-08-31 02:16:23,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 329 transitions, 4491 flow [2023-08-31 02:16:24,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 329 transitions, 4203 flow, removed 57 selfloop flow, removed 9 redundant places. [2023-08-31 02:16:24,010 INFO L231 Difference]: Finished difference. Result has 182 places, 218 transitions, 2807 flow [2023-08-31 02:16:24,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2807, PETRI_PLACES=182, PETRI_TRANSITIONS=218} [2023-08-31 02:16:24,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2023-08-31 02:16:24,011 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 218 transitions, 2807 flow [2023-08-31 02:16:24,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 183.72222222222223) internal successors, (3307), 18 states have internal predecessors, (3307), 0 states have call successors, (0), 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 02:16:24,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:24,011 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:24,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-31 02:16:24,216 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 [2023-08-31 02:16:24,217 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)] === [2023-08-31 02:16:24,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1625832884, now seen corresponding path program 5 times [2023-08-31 02:16:24,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:24,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132476244] [2023-08-31 02:16:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:24,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 02:16:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132476244] [2023-08-31 02:16:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132476244] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:16:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813634497] [2023-08-31 02:16:24,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 02:16:24,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:24,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:24,861 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) [2023-08-31 02:16:24,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-31 02:16:25,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-31 02:16:25,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:16:25,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 02:16:25,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:16:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 02:16:25,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:16:25,842 INFO L321 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2023-08-31 02:16:25,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 261 treesize of output 263 [2023-08-31 02:16:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 02:16:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813634497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 02:16:26,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 02:16:26,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-31 02:16:26,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322428036] [2023-08-31 02:16:26,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 02:16:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-31 02:16:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 02:16:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-31 02:16:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-31 02:16:26,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 544 [2023-08-31 02:16:26,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 218 transitions, 2807 flow. Second operand has 19 states, 19 states have (on average 186.47368421052633) internal successors, (3543), 19 states have internal predecessors, (3543), 0 states have call successors, (0), 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 02:16:26,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 02:16:26,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 544 [2023-08-31 02:16:26,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 02:16:29,484 INFO L130 PetriNetUnfolder]: 8430/14169 cut-off events. [2023-08-31 02:16:29,485 INFO L131 PetriNetUnfolder]: For 64283/64283 co-relation queries the response was YES. [2023-08-31 02:16:29,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57977 conditions, 14169 events. 8430/14169 cut-off events. For 64283/64283 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 99259 event pairs, 1826 based on Foata normal form. 264/14427 useless extension candidates. Maximal degree in co-relation 55764. Up to 3963 conditions per place. [2023-08-31 02:16:29,548 INFO L137 encePairwiseOnDemand]: 535/544 looper letters, 270 selfloop transitions, 153 changer transitions 33/456 dead transitions. [2023-08-31 02:16:29,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 456 transitions, 5448 flow [2023-08-31 02:16:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-31 02:16:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-31 02:16:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4845 transitions. [2023-08-31 02:16:29,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2023-08-31 02:16:29,553 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4845 transitions. [2023-08-31 02:16:29,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4845 transitions. [2023-08-31 02:16:29,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 02:16:29,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4845 transitions. [2023-08-31 02:16:29,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 193.8) internal successors, (4845), 25 states have internal predecessors, (4845), 0 states have call successors, (0), 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 02:16:29,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 544.0) internal successors, (14144), 26 states have internal predecessors, (14144), 0 states have call successors, (0), 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 02:16:29,566 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 544.0) internal successors, (14144), 26 states have internal predecessors, (14144), 0 states have call successors, (0), 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 02:16:29,566 INFO L175 Difference]: Start difference. First operand has 182 places, 218 transitions, 2807 flow. Second operand 25 states and 4845 transitions. [2023-08-31 02:16:29,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 456 transitions, 5448 flow [2023-08-31 02:16:29,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 456 transitions, 5168 flow, removed 80 selfloop flow, removed 13 redundant places. [2023-08-31 02:16:29,813 INFO L231 Difference]: Finished difference. Result has 199 places, 253 transitions, 3618 flow [2023-08-31 02:16:29,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=544, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3618, PETRI_PLACES=199, PETRI_TRANSITIONS=253} [2023-08-31 02:16:29,814 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2023-08-31 02:16:29,814 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 253 transitions, 3618 flow [2023-08-31 02:16:29,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 186.47368421052633) internal successors, (3543), 19 states have internal predecessors, (3543), 0 states have call successors, (0), 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 02:16:29,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 02:16:29,815 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 02:16:29,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-31 02:16:30,019 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 [2023-08-31 02:16:30,020 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)] === [2023-08-31 02:16:30,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 02:16:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 338030697, now seen corresponding path program 6 times [2023-08-31 02:16:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 02:16:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798025422] [2023-08-31 02:16:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 02:16:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 02:16:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 02:16:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 02:16:31,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 02:16:31,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798025422] [2023-08-31 02:16:31,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798025422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 02:16:31,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747258406] [2023-08-31 02:16:31,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 02:16:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 02:16:31,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 02:16:31,518 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) [2023-08-31 02:16:31,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-31 02:16:31,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-31 02:16:31,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 02:16:31,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-31 02:16:31,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 02:16:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 02:16:33,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 02:17:02,444 WARN L222 SmtUtils]: Spent 14.75s on a formula simplification that was a NOOP. DAG size: 1336 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-31 02:17:02,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 02:17:02,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 1106 treesize of output 4897 Killed by 15