./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/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-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:25:32,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:25:32,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:25:32,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:25:32,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:25:32,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:25:32,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:25:32,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:25:32,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:25:32,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:25:32,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:25:32,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:25:32,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:25:32,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:25:32,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:25:32,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:25:32,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:25:32,357 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:25:32,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:25:32,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:25:32,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:25:32,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:25:32,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:25:32,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:25:32,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:25:32,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:25:32,362 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:25:32,362 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:25:32,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:25:32,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:25:32,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:25:32,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:25:32,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:25:32,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:25:32,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:25:32,364 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:25:32,364 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:25:32,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:25:32,365 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:25:32,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:25:32,365 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:25:32,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:25:32,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-11-12 08:25:32,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:25:32,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:25:32,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:25:32,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:25:32,652 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:25:32,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-12 08:25:34,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:25:34,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:25:34,335 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-12 08:25:34,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6aef656/20760865a3b6461c8a07c4d331dd6eab/FLAGa72e300bd [2024-11-12 08:25:34,358 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb6aef656/20760865a3b6461c8a07c4d331dd6eab [2024-11-12 08:25:34,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:25:34,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:25:34,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:25:34,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:25:34,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:25:34,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b71a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34, skipping insertion in model container [2024-11-12 08:25:34,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:25:34,644 WARN L250 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] [2024-11-12 08:25:34,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:25:34,673 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:25:34,703 WARN L250 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] [2024-11-12 08:25:34,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:25:34,730 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:25:34,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34 WrapperNode [2024-11-12 08:25:34,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:25:34,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:25:34,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:25:34,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:25:34,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,784 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 264 [2024-11-12 08:25:34,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:25:34,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:25:34,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:25:34,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:25:34,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,825 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]. [2024-11-12 08:25:34,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:25:34,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:25:34,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:25:34,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:25:34,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (1/1) ... [2024-11-12 08:25:34,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:25:34,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:34,892 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) [2024-11-12 08:25:34,898 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 [2024-11-12 08:25:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:25:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:25:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:25:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:25:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:25:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 08:25:34,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 08:25:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:25:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:25:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:25:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:25:34,950 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:25:35,065 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:25:35,067 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:25:35,539 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:25:35,540 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:25:35,892 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:25:35,894 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-12 08:25:35,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:25:35 BoogieIcfgContainer [2024-11-12 08:25:35,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:25:35,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:25:35,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:25:35,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:25:35,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:25:34" (1/3) ... [2024-11-12 08:25:35,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78eb24c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:25:35, skipping insertion in model container [2024-11-12 08:25:35,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:25:34" (2/3) ... [2024-11-12 08:25:35,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78eb24c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:25:35, skipping insertion in model container [2024-11-12 08:25:35,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:25:35" (3/3) ... [2024-11-12 08:25:35,905 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-11-12 08:25:35,923 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:25:35,923 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:25:35,923 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:25:35,982 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 08:25:36,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 91 flow [2024-11-12 08:25:36,062 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-11-12 08:25:36,063 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:25:36,065 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. [2024-11-12 08:25:36,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 91 flow [2024-11-12 08:25:36,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 31 transitions, 80 flow [2024-11-12 08:25:36,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:25:36,091 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;@5b8b9fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:25:36,092 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 08:25:36,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:25:36,109 INFO L124 PetriNetUnfolderBase]: 5/30 cut-off events. [2024-11-12 08:25:36,109 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 08:25:36,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:36,110 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:25:36,110 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)] === [2024-11-12 08:25:36,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1493741134, now seen corresponding path program 1 times [2024-11-12 08:25:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941765488] [2024-11-12 08:25:36,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941765488] [2024-11-12 08:25:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941765488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:36,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:36,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:25:36,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165265748] [2024-11-12 08:25:36,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:36,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:36,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-12 08:25:36,774 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) [2024-11-12 08:25:36,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:36,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-12 08:25:36,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:37,038 INFO L124 PetriNetUnfolderBase]: 431/669 cut-off events. [2024-11-12 08:25:37,038 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-12 08:25:37,044 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. [2024-11-12 08:25:37,051 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 4 changer transitions 1/34 dead transitions. [2024-11-12 08:25:37,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 146 flow [2024-11-12 08:25:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:25:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:25:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-12 08:25:37,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-11-12 08:25:37,067 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 4 states and 61 transitions. [2024-11-12 08:25:37,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 146 flow [2024-11-12 08:25:37,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 08:25:37,075 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 94 flow [2024-11-12 08:25:37,076 INFO L262 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} [2024-11-12 08:25:37,080 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-12 08:25:37,082 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 94 flow [2024-11-12 08:25:37,082 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) [2024-11-12 08:25:37,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:37,083 INFO L206 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] [2024-11-12 08:25:37,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:25:37,084 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)] === [2024-11-12 08:25:37,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash -431074273, now seen corresponding path program 1 times [2024-11-12 08:25:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837226715] [2024-11-12 08:25:37,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:37,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:37,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837226715] [2024-11-12 08:25:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837226715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:25:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44098303] [2024-11-12 08:25:37,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:25:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:37,341 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) [2024-11-12 08:25:37,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:25:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:37,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:25:37,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:25:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:37,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:25:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:25:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44098303] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:25:37,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:25:37,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-12 08:25:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045572026] [2024-11-12 08:25:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:37,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:25:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:25:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:25:37,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-12 08:25:37,664 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) [2024-11-12 08:25:37,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:37,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-12 08:25:37,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:37,861 INFO L124 PetriNetUnfolderBase]: 627/935 cut-off events. [2024-11-12 08:25:37,861 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 08:25:37,865 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. [2024-11-12 08:25:37,871 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 39 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-11-12 08:25:37,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 212 flow [2024-11-12 08:25:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:25:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:25:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-11-12 08:25:37,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-11-12 08:25:37,875 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 94 flow. Second operand 5 states and 74 transitions. [2024-11-12 08:25:37,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 212 flow [2024-11-12 08:25:37,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 204 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:25:37,880 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 109 flow [2024-11-12 08:25:37,880 INFO L262 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} [2024-11-12 08:25:37,881 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-11-12 08:25:37,881 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 109 flow [2024-11-12 08:25:37,881 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) [2024-11-12 08:25:37,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:37,882 INFO L206 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] [2024-11-12 08:25:37,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:25:38,082 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 [2024-11-12 08:25:38,083 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)] === [2024-11-12 08:25:38,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1711154332, now seen corresponding path program 1 times [2024-11-12 08:25:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:38,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322049520] [2024-11-12 08:25:38,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:38,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:25:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322049520] [2024-11-12 08:25:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322049520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:25:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:25:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:25:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436735736] [2024-11-12 08:25:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:25:38,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:25:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:25:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:25:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:25:38,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-12 08:25:38,253 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) [2024-11-12 08:25:38,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:25:38,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-12 08:25:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:25:38,473 INFO L124 PetriNetUnfolderBase]: 747/1095 cut-off events. [2024-11-12 08:25:38,473 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-11-12 08:25:38,477 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. [2024-11-12 08:25:38,483 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 38 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-12 08:25:38,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 229 flow [2024-11-12 08:25:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:25:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:25:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-12 08:25:38,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-12 08:25:38,485 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 109 flow. Second operand 4 states and 65 transitions. [2024-11-12 08:25:38,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 229 flow [2024-11-12 08:25:38,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 221 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-12 08:25:38,488 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 124 flow [2024-11-12 08:25:38,488 INFO L262 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} [2024-11-12 08:25:38,489 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-12 08:25:38,490 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 124 flow [2024-11-12 08:25:38,490 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) [2024-11-12 08:25:38,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:25:38,490 INFO L206 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] [2024-11-12 08:25:38,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:25:38,490 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)] === [2024-11-12 08:25:38,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:25:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 505817667, now seen corresponding path program 1 times [2024-11-12 08:25:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:25:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172769326] [2024-11-12 08:25:38,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:25:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:40,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:25:40,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172769326] [2024-11-12 08:25:40,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172769326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:25:40,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298143979] [2024-11-12 08:25:40,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:25:40,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:25:40,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:25:40,036 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) [2024-11-12 08:25:40,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:25:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:25:40,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-12 08:25:40,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:25:40,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 08:25:40,239 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 [2024-11-12 08:25:40,303 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 08:25:40,303 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 11 treesize of output 11 [2024-11-12 08:25:40,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-12 08:25:40,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 11 [2024-11-12 08:25:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:25:40,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:25:53,357 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-12 08:25:53,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1682 treesize of output 1252 [2024-11-12 08:25:53,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:25:53,448 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 754 treesize of output 704 [2024-11-12 08:26:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:26:01,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298143979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:26:01,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:26:01,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-11-12 08:26:01,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426038018] [2024-11-12 08:26:01,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:26:01,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-12 08:26:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:26:01,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-12 08:26:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=695, Unknown=3, NotChecked=0, Total=812 [2024-11-12 08:26:06,164 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] [2024-11-12 08:26:10,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:10,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-11-12 08:26:10,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 124 flow. Second operand has 29 states, 29 states have (on average 6.310344827586207) internal successors, (183), 29 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:26:10,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:26:10,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-11-12 08:26:10,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:26:14,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:18,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:42,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:46,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:50,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-12 08:26:50,680 INFO L124 PetriNetUnfolderBase]: 2414/3458 cut-off events. [2024-11-12 08:26:50,680 INFO L125 PetriNetUnfolderBase]: For 1646/1646 co-relation queries the response was YES. [2024-11-12 08:26:50,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8901 conditions, 3458 events. 2414/3458 cut-off events. For 1646/1646 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14841 event pairs, 192 based on Foata normal form. 1/3230 useless extension candidates. Maximal degree in co-relation 6960. Up to 1896 conditions per place. [2024-11-12 08:26:50,703 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 119 selfloop transitions, 41 changer transitions 1/162 dead transitions. [2024-11-12 08:26:50,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 162 transitions, 833 flow [2024-11-12 08:26:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 08:26:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 08:26:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 232 transitions. [2024-11-12 08:26:50,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3682539682539683 [2024-11-12 08:26:50,707 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 124 flow. Second operand 18 states and 232 transitions. [2024-11-12 08:26:50,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 162 transitions, 833 flow [2024-11-12 08:26:50,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 162 transitions, 817 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:26:50,714 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 369 flow [2024-11-12 08:26:50,714 INFO L262 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=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=369, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2024-11-12 08:26:50,715 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-11-12 08:26:50,715 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 369 flow [2024-11-12 08:26:50,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.310344827586207) internal successors, (183), 29 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:26:50,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:26:50,716 INFO L206 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] [2024-11-12 08:26:50,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:26:50,916 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 [2024-11-12 08:26:50,917 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)] === [2024-11-12 08:26:50,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:26:50,918 INFO L85 PathProgramCache]: Analyzing trace with hash -345259615, now seen corresponding path program 2 times [2024-11-12 08:26:50,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:26:50,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831176498] [2024-11-12 08:26:50,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:26:50,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:26:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:26:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:26:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:26:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831176498] [2024-11-12 08:26:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831176498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:26:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862624585] [2024-11-12 08:26:51,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:26:51,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:26:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:26:51,958 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) [2024-11-12 08:26:51,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:26:52,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:26:52,047 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:26:52,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 08:26:52,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:26:52,131 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 [2024-11-12 08:26:52,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:52,496 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 [2024-11-12 08:26:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:26:52,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:26:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:26:52,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862624585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:26:52,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:26:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 24 [2024-11-12 08:26:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562557623] [2024-11-12 08:26:52,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:26:52,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 08:26:52,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:26:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 08:26:52,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2024-11-12 08:26:53,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-12 08:26:53,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 369 flow. Second operand has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:26:53,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:26:53,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-12 08:26:53,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:26:55,222 INFO L124 PetriNetUnfolderBase]: 2284/3539 cut-off events. [2024-11-12 08:26:55,223 INFO L125 PetriNetUnfolderBase]: For 3504/3504 co-relation queries the response was YES. [2024-11-12 08:26:55,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10497 conditions, 3539 events. 2284/3539 cut-off events. For 3504/3504 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 18101 event pairs, 217 based on Foata normal form. 1/3349 useless extension candidates. Maximal degree in co-relation 9414. Up to 2088 conditions per place. [2024-11-12 08:26:55,252 INFO L140 encePairwiseOnDemand]: 19/35 looper letters, 138 selfloop transitions, 136 changer transitions 1/280 dead transitions. [2024-11-12 08:26:55,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 280 transitions, 1772 flow [2024-11-12 08:26:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 08:26:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 08:26:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 383 transitions. [2024-11-12 08:26:55,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3647619047619048 [2024-11-12 08:26:55,256 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 369 flow. Second operand 30 states and 383 transitions. [2024-11-12 08:26:55,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 280 transitions, 1772 flow [2024-11-12 08:26:55,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 280 transitions, 1744 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-12 08:26:55,273 INFO L231 Difference]: Finished difference. Result has 106 places, 191 transitions, 1364 flow [2024-11-12 08:26:55,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1364, PETRI_PLACES=106, PETRI_TRANSITIONS=191} [2024-11-12 08:26:55,276 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2024-11-12 08:26:55,277 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 191 transitions, 1364 flow [2024-11-12 08:26:55,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:26:55,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:26:55,278 INFO L206 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] [2024-11-12 08:26:55,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:26:55,478 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 [2024-11-12 08:26:55,479 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)] === [2024-11-12 08:26:55,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:26:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1782862343, now seen corresponding path program 3 times [2024-11-12 08:26:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:26:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182959708] [2024-11-12 08:26:55,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:26:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:26:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:26:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:26:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:26:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182959708] [2024-11-12 08:26:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182959708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:26:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149627722] [2024-11-12 08:26:56,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:26:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:26:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:26:56,448 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) [2024-11-12 08:26:56,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:26:56,532 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:26:56,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:26:56,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-12 08:26:56,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:26:56,628 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 [2024-11-12 08:26:56,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:56,849 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 [2024-11-12 08:26:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:26:56,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:26:57,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:57,112 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 [2024-11-12 08:26:57,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:57,424 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 283 treesize of output 243 [2024-11-12 08:26:57,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:57,449 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 166 treesize of output 130 [2024-11-12 08:26:57,590 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:57,591 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 198 treesize of output 174 [2024-11-12 08:26:57,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:26:57,603 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 154 treesize of output 130 [2024-11-12 08:26:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:26:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149627722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:26:57,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:26:57,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2024-11-12 08:26:57,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014111687] [2024-11-12 08:26:57,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:26:57,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 08:26:57,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:26:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 08:26:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-12 08:26:58,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-12 08:26:58,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 191 transitions, 1364 flow. Second operand has 26 states, 26 states have (on average 9.423076923076923) internal successors, (245), 26 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:26:58,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:26:58,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-12 08:26:58,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:27:00,003 INFO L124 PetriNetUnfolderBase]: 2414/3794 cut-off events. [2024-11-12 08:27:00,004 INFO L125 PetriNetUnfolderBase]: For 13444/13616 co-relation queries the response was YES. [2024-11-12 08:27:00,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15920 conditions, 3794 events. 2414/3794 cut-off events. For 13444/13616 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20360 event pairs, 327 based on Foata normal form. 88/3823 useless extension candidates. Maximal degree in co-relation 14780. Up to 2601 conditions per place. [2024-11-12 08:27:00,051 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 190 selfloop transitions, 95 changer transitions 1/301 dead transitions. [2024-11-12 08:27:00,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 301 transitions, 2612 flow [2024-11-12 08:27:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 08:27:00,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-12 08:27:00,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 287 transitions. [2024-11-12 08:27:00,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-11-12 08:27:00,054 INFO L175 Difference]: Start difference. First operand has 106 places, 191 transitions, 1364 flow. Second operand 20 states and 287 transitions. [2024-11-12 08:27:00,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 301 transitions, 2612 flow [2024-11-12 08:27:00,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 301 transitions, 2539 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-11-12 08:27:00,097 INFO L231 Difference]: Finished difference. Result has 127 places, 224 transitions, 1886 flow [2024-11-12 08:27:00,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1886, PETRI_PLACES=127, PETRI_TRANSITIONS=224} [2024-11-12 08:27:00,099 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2024-11-12 08:27:00,100 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 224 transitions, 1886 flow [2024-11-12 08:27:00,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.423076923076923) internal successors, (245), 26 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:27:00,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:27:00,101 INFO L206 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] [2024-11-12 08:27:00,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:27:00,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:27:00,302 INFO L396 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)] === [2024-11-12 08:27:00,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:27:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -617151721, now seen corresponding path program 4 times [2024-11-12 08:27:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:27:00,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566064164] [2024-11-12 08:27:00,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:27:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:27:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:27:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:27:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:27:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566064164] [2024-11-12 08:27:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566064164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:27:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166500698] [2024-11-12 08:27:01,175 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:27:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:27:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:27:01,177 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) [2024-11-12 08:27:01,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:27:01,275 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:27:01,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:27:01,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-12 08:27:01,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:27:01,367 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 [2024-11-12 08:27:01,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:27:01,644 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 [2024-11-12 08:27:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:27:01,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:27:01,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:27:01,978 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 [2024-11-12 08:27:02,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:27:02,368 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 198 treesize of output 174 [2024-11-12 08:27:02,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:27:02,386 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 166 treesize of output 134 [2024-11-12 08:27:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:27:02,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166500698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:27:02,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:27:02,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 25 [2024-11-12 08:27:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297682454] [2024-11-12 08:27:02,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:27:02,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 08:27:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:27:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 08:27:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-11-12 08:27:02,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-12 08:27:02,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 224 transitions, 1886 flow. Second operand has 26 states, 26 states have (on average 8.423076923076923) internal successors, (219), 26 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:27:02,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:27:02,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-12 08:27:02,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand