./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:12:35,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:12:35,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:12:35,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:12:35,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:12:35,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:12:35,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:12:35,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:12:35,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:12:35,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:12:35,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:12:35,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:12:35,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:12:35,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:12:35,462 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:12:35,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:12:35,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:12:35,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:12:35,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:12:35,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:12:35,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:12:35,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:12:35,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:12:35,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:12:35,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:12:35,470 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:12:35,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:12:35,470 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:12:35,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:12:35,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:12:35,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:12:35,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:12:35,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:12:35,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:12:35,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:12:35,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:12:35,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:12:35,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:12:35,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:12:35,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:12:35,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:12:35,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:12:35,474 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-10-13 07:12:35,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:12:35,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:12:35,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:12:35,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:12:35,722 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:12:35,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-13 07:12:37,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:12:37,404 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:12:37,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-13 07:12:37,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310fb17c9/0362fb7687a545609cd06cdc336a8ac6/FLAG0351bf909 [2024-10-13 07:12:37,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310fb17c9/0362fb7687a545609cd06cdc336a8ac6 [2024-10-13 07:12:37,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:12:37,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:12:37,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:12:37,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:12:37,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:12:37,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578bb4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37, skipping insertion in model container [2024-10-13 07:12:37,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,465 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:12:37,695 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2638,2651] [2024-10-13 07:12:37,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:12:37,724 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:12:37,753 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c[2638,2651] [2024-10-13 07:12:37,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:12:37,812 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:12:37,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37 WrapperNode [2024-10-13 07:12:37,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:12:37,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:12:37,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:12:37,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:12:37,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,885 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 264 [2024-10-13 07:12:37,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:12:37,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:12:37,886 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:12:37,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:12:37,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,922 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 07:12:37,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:12:37,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:12:37,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:12:37,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:12:37,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (1/1) ... [2024-10-13 07:12:37,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:12:37,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:37,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:12:38,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:12:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:12:38,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:12:38,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:12:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:12:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:12:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:12:38,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:12:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:12:38,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:12:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:12:38,059 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:12:38,198 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:12:38,200 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:12:38,666 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:12:38,667 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:12:39,030 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:12:39,031 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-13 07:12:39,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:39 BoogieIcfgContainer [2024-10-13 07:12:39,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:12:39,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:12:39,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:12:39,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:12:39,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:12:37" (1/3) ... [2024-10-13 07:12:39,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ed4bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:39, skipping insertion in model container [2024-10-13 07:12:39,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:12:37" (2/3) ... [2024-10-13 07:12:39,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ed4bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:12:39, skipping insertion in model container [2024-10-13 07:12:39,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:12:39" (3/3) ... [2024-10-13 07:12:39,043 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-10-13 07:12:39,061 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:12:39,061 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:12:39,062 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:12:39,137 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:12:39,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 91 flow [2024-10-13 07:12:39,236 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-10-13 07:12:39,236 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:12:39,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 5/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-10-13 07:12:39,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 91 flow [2024-10-13 07:12:39,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 31 transitions, 80 flow [2024-10-13 07:12:39,258 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:12:39,264 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7d9d5838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:12:39,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:12:39,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:12:39,274 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-10-13 07:12:39,275 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:12:39,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:39,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:39,276 INFO L396 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)] === [2024-10-13 07:12:39,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1493741134, now seen corresponding path program 1 times [2024-10-13 07:12:39,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:39,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497846334] [2024-10-13 07:12:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:39,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:39,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497846334] [2024-10-13 07:12:39,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497846334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:39,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:39,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:12:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341159943] [2024-10-13 07:12:39,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:39,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:12:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:12:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:12:39,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-10-13 07:12:39,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:39,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:39,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-10-13 07:12:39,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:40,097 INFO L124 PetriNetUnfolderBase]: 431/669 cut-off events. [2024-10-13 07:12:40,097 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-13 07:12:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1364 conditions, 669 events. 431/669 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2569 event pairs, 306 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 1201. Up to 625 conditions per place. [2024-10-13 07:12:40,111 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 4 changer transitions 1/34 dead transitions. [2024-10-13 07:12:40,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 146 flow [2024-10-13 07:12:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:12:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:12:40,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-10-13 07:12:40,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-10-13 07:12:40,123 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 4 states and 61 transitions. [2024-10-13 07:12:40,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 146 flow [2024-10-13 07:12:40,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:12:40,129 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 94 flow [2024-10-13 07:12:40,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-13 07:12:40,135 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-10-13 07:12:40,136 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 94 flow [2024-10-13 07:12:40,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:40,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:40,136 INFO L204 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] [2024-10-13 07:12:40,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:12:40,137 INFO L396 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)] === [2024-10-13 07:12:40,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash -431074273, now seen corresponding path program 1 times [2024-10-13 07:12:40,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843390815] [2024-10-13 07:12:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:40,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843390815] [2024-10-13 07:12:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843390815] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361811891] [2024-10-13 07:12:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:40,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:40,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:40,361 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) [2024-10-13 07:12:40,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:12:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:40,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:12:40,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:40,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:40,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:12:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361811891] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:40,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:12:40,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-10-13 07:12:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036243932] [2024-10-13 07:12:40,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:40,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:12:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:12:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:12:40,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-13 07:12:40,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:40,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:40,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-13 07:12:40,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:40,808 INFO L124 PetriNetUnfolderBase]: 627/935 cut-off events. [2024-10-13 07:12:40,808 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 07:12:40,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 935 events. 627/935 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3689 event pairs, 219 based on Foata normal form. 0/890 useless extension candidates. Maximal degree in co-relation 1866. Up to 462 conditions per place. [2024-10-13 07:12:40,818 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 39 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-10-13 07:12:40,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 212 flow [2024-10-13 07:12:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:12:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:12:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-10-13 07:12:40,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-10-13 07:12:40,821 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 94 flow. Second operand 5 states and 74 transitions. [2024-10-13 07:12:40,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 212 flow [2024-10-13 07:12:40,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 204 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 07:12:40,824 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 109 flow [2024-10-13 07:12:40,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-10-13 07:12:40,825 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-10-13 07:12:40,825 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 109 flow [2024-10-13 07:12:40,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:40,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:40,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:40,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 07:12:41,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:41,030 INFO L396 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)] === [2024-10-13 07:12:41,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1711154332, now seen corresponding path program 1 times [2024-10-13 07:12:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906252310] [2024-10-13 07:12:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:12:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906252310] [2024-10-13 07:12:41,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906252310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:12:41,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:12:41,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:12:41,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145288662] [2024-10-13 07:12:41,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:12:41,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:12:41,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:41,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:12:41,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:12:41,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-13 07:12:41,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:41,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:41,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-13 07:12:41,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:41,370 INFO L124 PetriNetUnfolderBase]: 747/1095 cut-off events. [2024-10-13 07:12:41,370 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-10-13 07:12:41,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 1095 events. 747/1095 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4093 event pairs, 296 based on Foata normal form. 0/1040 useless extension candidates. Maximal degree in co-relation 2499. Up to 559 conditions per place. [2024-10-13 07:12:41,379 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-13 07:12:41,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 229 flow [2024-10-13 07:12:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:12:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:12:41,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-10-13 07:12:41,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-10-13 07:12:41,381 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 109 flow. Second operand 4 states and 65 transitions. [2024-10-13 07:12:41,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 229 flow [2024-10-13 07:12:41,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 221 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 07:12:41,383 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 124 flow [2024-10-13 07:12:41,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-10-13 07:12:41,384 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-10-13 07:12:41,384 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 124 flow [2024-10-13 07:12:41,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:41,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:41,385 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:41,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:12:41,385 INFO L396 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)] === [2024-10-13 07:12:41,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:41,386 INFO L85 PathProgramCache]: Analyzing trace with hash 505817667, now seen corresponding path program 1 times [2024-10-13 07:12:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745050437] [2024-10-13 07:12:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:41,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:42,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745050437] [2024-10-13 07:12:42,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745050437] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020860084] [2024-10-13 07:12:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:42,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:42,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:42,761 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) [2024-10-13 07:12:42,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:12:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:42,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 07:12:42,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:43,019 INFO L378 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 1 [2024-10-13 07:12:43,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:43,319 INFO L378 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 27 treesize of output 23 [2024-10-13 07:12:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:43,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:43,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:43,620 INFO L378 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 248 treesize of output 232 [2024-10-13 07:12:44,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:44,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 182 [2024-10-13 07:12:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:44,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020860084] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:44,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-10-13 07:12:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845693826] [2024-10-13 07:12:44,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:44,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-13 07:12:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-13 07:12:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-10-13 07:12:44,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-13 07:12:44,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 124 flow. Second operand has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:44,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:44,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-13 07:12:44,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:46,511 INFO L124 PetriNetUnfolderBase]: 2093/3170 cut-off events. [2024-10-13 07:12:46,511 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2024-10-13 07:12:46,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7942 conditions, 3170 events. 2093/3170 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15122 event pairs, 105 based on Foata normal form. 2/3169 useless extension candidates. Maximal degree in co-relation 4295. Up to 1479 conditions per place. [2024-10-13 07:12:46,533 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 142 selfloop transitions, 50 changer transitions 2/198 dead transitions. [2024-10-13 07:12:46,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 198 transitions, 1020 flow [2024-10-13 07:12:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 07:12:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 07:12:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 312 transitions. [2024-10-13 07:12:46,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-10-13 07:12:46,537 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 124 flow. Second operand 20 states and 312 transitions. [2024-10-13 07:12:46,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 198 transitions, 1020 flow [2024-10-13 07:12:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 198 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:12:46,547 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 445 flow [2024-10-13 07:12:46,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=445, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2024-10-13 07:12:46,549 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-10-13 07:12:46,549 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 445 flow [2024-10-13 07:12:46,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.206896551724139) internal successors, (238), 29 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:46,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:46,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:46,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:12:46,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-13 07:12:46,754 INFO L396 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)] === [2024-10-13 07:12:46,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash -345259615, now seen corresponding path program 2 times [2024-10-13 07:12:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087453502] [2024-10-13 07:12:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:47,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087453502] [2024-10-13 07:12:47,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087453502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:47,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057067255] [2024-10-13 07:12:47,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:12:47,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:47,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:47,756 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) [2024-10-13 07:12:47,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:12:47,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:12:47,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:47,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-13 07:12:47,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:47,977 INFO L378 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 1 [2024-10-13 07:12:48,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:48,214 INFO L378 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 27 treesize of output 19 [2024-10-13 07:12:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:48,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:48,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:48,450 INFO L378 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 256 treesize of output 240 [2024-10-13 07:12:48,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 07:12:48,758 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 50 [2024-10-13 07:12:48,815 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-10-13 07:12:48,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 156 treesize of output 139 [2024-10-13 07:12:48,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:48,940 INFO L378 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 1 case distinctions, treesize of input 283 treesize of output 243 [2024-10-13 07:12:48,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:48,956 INFO L378 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 1 case distinctions, treesize of input 182 treesize of output 134 [2024-10-13 07:12:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057067255] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:49,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2024-10-13 07:12:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670224402] [2024-10-13 07:12:49,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:49,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 07:12:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 07:12:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-10-13 07:12:49,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-10-13 07:12:49,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 445 flow. Second operand has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:49,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:49,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-10-13 07:12:49,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:50,791 INFO L124 PetriNetUnfolderBase]: 2621/3922 cut-off events. [2024-10-13 07:12:50,791 INFO L125 PetriNetUnfolderBase]: For 4966/4966 co-relation queries the response was YES. [2024-10-13 07:12:50,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12389 conditions, 3922 events. 2621/3922 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 19196 event pairs, 321 based on Foata normal form. 1/3919 useless extension candidates. Maximal degree in co-relation 8014. Up to 2806 conditions per place. [2024-10-13 07:12:50,823 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 138 selfloop transitions, 58 changer transitions 1/201 dead transitions. [2024-10-13 07:12:50,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 201 transitions, 1313 flow [2024-10-13 07:12:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 07:12:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 07:12:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 275 transitions. [2024-10-13 07:12:50,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-10-13 07:12:50,826 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 445 flow. Second operand 20 states and 275 transitions. [2024-10-13 07:12:50,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 201 transitions, 1313 flow [2024-10-13 07:12:50,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 201 transitions, 1285 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-13 07:12:50,844 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 872 flow [2024-10-13 07:12:50,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=872, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2024-10-13 07:12:50,845 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2024-10-13 07:12:50,845 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 872 flow [2024-10-13 07:12:50,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.653846153846153) internal successors, (225), 26 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:50,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:12:50,847 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:12:50,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 07:12:51,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:51,052 INFO L396 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)] === [2024-10-13 07:12:51,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:12:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1290033085, now seen corresponding path program 3 times [2024-10-13 07:12:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:12:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767768819] [2024-10-13 07:12:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:12:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:12:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:12:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:12:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767768819] [2024-10-13 07:12:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767768819] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:12:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046565244] [2024-10-13 07:12:52,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:12:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:12:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:12:52,050 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) [2024-10-13 07:12:52,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:12:52,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:12:52,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:12:52,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-13 07:12:52,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:12:52,256 INFO L378 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 1 [2024-10-13 07:12:52,586 INFO L349 Elim1Store]: treesize reduction 24, result has 57.9 percent of original size [2024-10-13 07:12:52,586 INFO L378 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 31 treesize of output 43 [2024-10-13 07:12:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:52,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:12:52,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:52,930 INFO L378 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 256 treesize of output 240 [2024-10-13 07:12:53,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:53,227 INFO L378 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 289 treesize of output 243 [2024-10-13 07:12:53,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:12:53,241 INFO L378 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 142 [2024-10-13 07:12:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:12:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046565244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:12:53,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:12:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-10-13 07:12:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865063984] [2024-10-13 07:12:53,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:12:53,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 07:12:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:12:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 07:12:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-10-13 07:12:53,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 35 [2024-10-13 07:12:53,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 872 flow. Second operand has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:12:53,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:12:53,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 35 [2024-10-13 07:12:53,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:12:57,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:01,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:05,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:09,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:13,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:17,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:21,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:25,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:29,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:33,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:37,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:41,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:45,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:49,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:53,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:13:57,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:14:01,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:14:05,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:14:09,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 07:14:12,088 INFO L124 PetriNetUnfolderBase]: 5007/7210 cut-off events. [2024-10-13 07:14:12,088 INFO L125 PetriNetUnfolderBase]: For 14525/14534 co-relation queries the response was YES. [2024-10-13 07:14:12,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25670 conditions, 7210 events. 5007/7210 cut-off events. For 14525/14534 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 36255 event pairs, 414 based on Foata normal form. 10/7219 useless extension candidates. Maximal degree in co-relation 21564. Up to 3565 conditions per place. [2024-10-13 07:14:12,140 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 218 selfloop transitions, 141 changer transitions 4/365 dead transitions. [2024-10-13 07:14:12,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 365 transitions, 2727 flow [2024-10-13 07:14:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 07:14:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-13 07:14:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 427 transitions. [2024-10-13 07:14:12,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-10-13 07:14:12,145 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 872 flow. Second operand 30 states and 427 transitions. [2024-10-13 07:14:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 365 transitions, 2727 flow [2024-10-13 07:14:12,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 365 transitions, 2676 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-13 07:14:12,199 INFO L231 Difference]: Finished difference. Result has 128 places, 202 transitions, 1893 flow [2024-10-13 07:14:12,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1893, PETRI_PLACES=128, PETRI_TRANSITIONS=202} [2024-10-13 07:14:12,200 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 92 predicate places. [2024-10-13 07:14:12,200 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 202 transitions, 1893 flow [2024-10-13 07:14:12,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.419354838709677) internal successors, (230), 31 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:14:12,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:14:12,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]