./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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-three-array-sum.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:50:49,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:50:49,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:50:49,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:50:49,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:50:49,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:50:49,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:50:49,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:50:49,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:50:49,478 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:50:49,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:50:49,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:50:49,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:50:49,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:50:49,482 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:50:49,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:50:49,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:50:49,483 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:50:49,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:50:49,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:50:49,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:50:49,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:50:49,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:50:49,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:50:49,485 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:50:49,485 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:50:49,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:50:49,485 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:50:49,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:50:49,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:50:49,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:50:49,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:50:49,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:50:49,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:50:49,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:50:49,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:50:49,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:50:49,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:50:49,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:50:49,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:50:49,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:50:49,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:50:49,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d27b7f98ac68d2da6120346c107c87df7f6f708200f0d5d2c806741122116e [2024-11-09 02:50:49,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:50:49,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:50:49,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:50:49,722 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:50:49,723 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:50:49,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-09 02:50:50,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:50:51,112 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:50:51,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-sum.wvr.c [2024-11-09 02:50:51,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e420ac5ae/2c37b557ee734b38b286abd87f00ed36/FLAG0575940ab [2024-11-09 02:50:51,515 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e420ac5ae/2c37b557ee734b38b286abd87f00ed36 [2024-11-09 02:50:51,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:50:51,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:50:51,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:50:51,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:50:51,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:50:51,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4097d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51, skipping insertion in model container [2024-11-09 02:50:51,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:50:51,692 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-three-array-sum.wvr.c[2730,2743] [2024-11-09 02:50:51,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:50:51,705 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:50:51,725 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-three-array-sum.wvr.c[2730,2743] [2024-11-09 02:50:51,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:50:51,750 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:50:51,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51 WrapperNode [2024-11-09 02:50:51,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:50:51,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:50:51,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:50:51,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:50:51,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,786 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 138 [2024-11-09 02:50:51,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:50:51,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:50:51,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:50:51,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:50:51,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,822 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-09 02:50:51,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:50:51,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:50:51,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:50:51,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:50:51,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (1/1) ... [2024-11-09 02:50:51,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:50:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:51,874 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) [2024-11-09 02:50:51,878 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 [2024-11-09 02:50:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:50:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:50:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:50:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:50:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:50:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:50:51,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:50:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:50:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:50:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:50:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:50:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:50:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:50:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:50:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:50:51,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:50:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:50:51,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:50:51,922 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:50:52,026 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:50:52,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:50:52,314 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:50:52,315 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:50:52,548 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:50:52,549 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:50:52,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:52 BoogieIcfgContainer [2024-11-09 02:50:52,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:50:52,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:50:52,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:50:52,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:50:52,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:50:51" (1/3) ... [2024-11-09 02:50:52,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65673940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:50:52, skipping insertion in model container [2024-11-09 02:50:52,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:50:51" (2/3) ... [2024-11-09 02:50:52,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65673940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:50:52, skipping insertion in model container [2024-11-09 02:50:52,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:50:52" (3/3) ... [2024-11-09 02:50:52,558 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-11-09 02:50:52,573 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:50:52,573 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:50:52,573 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:50:52,622 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:50:52,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2024-11-09 02:50:52,681 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-11-09 02:50:52,682 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:50:52,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-09 02:50:52,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2024-11-09 02:50:52,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2024-11-09 02:50:52,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:50:52,710 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;@acffb22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:50:52,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:50:52,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:50:52,726 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2024-11-09 02:50:52,726 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:50:52,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:52,727 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] [2024-11-09 02:50:52,727 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)] === [2024-11-09 02:50:52,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1514226813, now seen corresponding path program 1 times [2024-11-09 02:50:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:52,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705887192] [2024-11-09 02:50:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:52,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:53,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:53,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705887192] [2024-11-09 02:50:53,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705887192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:53,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:53,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:50:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974182627] [2024-11-09 02:50:53,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:53,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:50:53,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:50:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:50:53,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:53,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-09 02:50:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:53,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:53,592 INFO L124 PetriNetUnfolderBase]: 638/1043 cut-off events. [2024-11-09 02:50:53,592 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-09 02:50:53,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 1043 events. 638/1043 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4669 event pairs, 172 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 1709. Up to 535 conditions per place. [2024-11-09 02:50:53,607 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 42 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2024-11-09 02:50:53,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 231 flow [2024-11-09 02:50:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:50:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:50:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-09 02:50:53,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-11-09 02:50:53,620 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 77 transitions. [2024-11-09 02:50:53,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 231 flow [2024-11-09 02:50:53,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:50:53,630 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 95 flow [2024-11-09 02:50:53,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2024-11-09 02:50:53,636 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-09 02:50:53,637 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 95 flow [2024-11-09 02:50:53,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-09 02:50:53,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:53,637 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] [2024-11-09 02:50:53,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:50:53,638 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)] === [2024-11-09 02:50:53,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:53,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1402878651, now seen corresponding path program 1 times [2024-11-09 02:50:53,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:53,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723088362] [2024-11-09 02:50:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:53,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:53,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:53,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723088362] [2024-11-09 02:50:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723088362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:53,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:50:53,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234171812] [2024-11-09 02:50:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:53,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:53,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:53,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-09 02:50:53,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:53,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:53,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:54,032 INFO L124 PetriNetUnfolderBase]: 1070/1919 cut-off events. [2024-11-09 02:50:54,032 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-11-09 02:50:54,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1919 events. 1070/1919 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10684 event pairs, 566 based on Foata normal form. 58/1855 useless extension candidates. Maximal degree in co-relation 1545. Up to 815 conditions per place. [2024-11-09 02:50:54,042 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-11-09 02:50:54,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 371 flow [2024-11-09 02:50:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-09 02:50:54,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-09 02:50:54,045 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 95 flow. Second operand 6 states and 136 transitions. [2024-11-09 02:50:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 371 flow [2024-11-09 02:50:54,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 86 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:50:54,049 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 196 flow [2024-11-09 02:50:54,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2024-11-09 02:50:54,050 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-09 02:50:54,050 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 196 flow [2024-11-09 02:50:54,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-09 02:50:54,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:54,051 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] [2024-11-09 02:50:54,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:50:54,051 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)] === [2024-11-09 02:50:54,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash 680298853, now seen corresponding path program 1 times [2024-11-09 02:50:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322728952] [2024-11-09 02:50:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:54,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322728952] [2024-11-09 02:50:54,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322728952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835850668] [2024-11-09 02:50:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:54,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:54,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:54,173 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) [2024-11-09 02:50:54,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:50:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:54,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:54,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:54,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:54,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835850668] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:54,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439541857] [2024-11-09 02:50:54,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:54,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:54,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:54,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-09 02:50:54,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-09 02:50:54,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:54,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-09 02:50:54,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:54,722 INFO L124 PetriNetUnfolderBase]: 2124/3584 cut-off events. [2024-11-09 02:50:54,722 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2024-11-09 02:50:54,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 3584 events. 2124/3584 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20538 event pairs, 780 based on Foata normal form. 0/3217 useless extension candidates. Maximal degree in co-relation 3477. Up to 1155 conditions per place. [2024-11-09 02:50:54,744 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 85 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2024-11-09 02:50:54,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 556 flow [2024-11-09 02:50:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:54,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-09 02:50:54,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5683760683760684 [2024-11-09 02:50:54,745 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 196 flow. Second operand 6 states and 133 transitions. [2024-11-09 02:50:54,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 556 flow [2024-11-09 02:50:54,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 101 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:50:54,751 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 260 flow [2024-11-09 02:50:54,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2024-11-09 02:50:54,753 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2024-11-09 02:50:54,753 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 260 flow [2024-11-09 02:50:54,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-09 02:50:54,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:54,754 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] [2024-11-09 02:50:54,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:54,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:54,955 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)] === [2024-11-09 02:50:54,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1279354192, now seen corresponding path program 1 times [2024-11-09 02:50:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180493124] [2024-11-09 02:50:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:50:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180493124] [2024-11-09 02:50:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180493124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:50:55,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:50:55,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:50:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203299299] [2024-11-09 02:50:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:55,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:55,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:55,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:50:55,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-09 02:50:55,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-09 02:50:55,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:55,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-09 02:50:55,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:55,296 INFO L124 PetriNetUnfolderBase]: 1372/2233 cut-off events. [2024-11-09 02:50:55,296 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2024-11-09 02:50:55,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2233 events. 1372/2233 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10893 event pairs, 793 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 3741. Up to 1248 conditions per place. [2024-11-09 02:50:55,306 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 28 selfloop transitions, 6 changer transitions 37/78 dead transitions. [2024-11-09 02:50:55,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 458 flow [2024-11-09 02:50:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:50:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:50:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-09 02:50:55,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-11-09 02:50:55,308 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 260 flow. Second operand 6 states and 120 transitions. [2024-11-09 02:50:55,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 458 flow [2024-11-09 02:50:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:50:55,312 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 179 flow [2024-11-09 02:50:55,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-11-09 02:50:55,313 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-09 02:50:55,313 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 179 flow [2024-11-09 02:50:55,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-09 02:50:55,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:55,314 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] [2024-11-09 02:50:55,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:50:55,314 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)] === [2024-11-09 02:50:55,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash -463702353, now seen corresponding path program 1 times [2024-11-09 02:50:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391718347] [2024-11-09 02:50:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:55,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391718347] [2024-11-09 02:50:55,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391718347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:55,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042349094] [2024-11-09 02:50:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:55,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:55,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:55,391 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) [2024-11-09 02:50:55,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:50:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:55,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:55,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:55,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:55,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042349094] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:55,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:55,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:55,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753501951] [2024-11-09 02:50:55,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:55,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:55,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:55,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-11-09 02:50:55,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-09 02:50:55,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:55,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-11-09 02:50:55,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:55,717 INFO L124 PetriNetUnfolderBase]: 910/1560 cut-off events. [2024-11-09 02:50:55,717 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-11-09 02:50:55,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1560 events. 910/1560 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7687 event pairs, 290 based on Foata normal form. 72/1536 useless extension candidates. Maximal degree in co-relation 3901. Up to 647 conditions per place. [2024-11-09 02:50:55,728 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-09 02:50:55,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 321 flow [2024-11-09 02:50:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:50:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:50:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-09 02:50:55,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-11-09 02:50:55,730 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 179 flow. Second operand 5 states and 87 transitions. [2024-11-09 02:50:55,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 321 flow [2024-11-09 02:50:55,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 262 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-09 02:50:55,735 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 155 flow [2024-11-09 02:50:55,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-09 02:50:55,736 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2024-11-09 02:50:55,736 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 155 flow [2024-11-09 02:50:55,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-11-09 02:50:55,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:55,736 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, 1, 1, 1, 1, 1] [2024-11-09 02:50:55,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:50:55,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:55,937 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)] === [2024-11-09 02:50:55,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:55,938 INFO L85 PathProgramCache]: Analyzing trace with hash -327834966, now seen corresponding path program 1 times [2024-11-09 02:50:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:55,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375814535] [2024-11-09 02:50:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:55,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:50:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:56,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375814535] [2024-11-09 02:50:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375814535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773914267] [2024-11-09 02:50:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:56,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:56,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:56,028 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) [2024-11-09 02:50:56,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:50:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:56,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:50:56,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:50:56,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:50:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773914267] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:56,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:50:56,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-09 02:50:56,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97947971] [2024-11-09 02:50:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:50:56,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:50:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:50:56,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-09 02:50:56,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-11-09 02:50:56,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-09 02:50:56,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:56,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-11-09 02:50:56,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:56,307 INFO L124 PetriNetUnfolderBase]: 686/1207 cut-off events. [2024-11-09 02:50:56,308 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-11-09 02:50:56,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1207 events. 686/1207 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5626 event pairs, 328 based on Foata normal form. 62/1200 useless extension candidates. Maximal degree in co-relation 2900. Up to 708 conditions per place. [2024-11-09 02:50:56,315 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-09 02:50:56,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 307 flow [2024-11-09 02:50:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:50:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:50:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-09 02:50:56,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-11-09 02:50:56,317 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 155 flow. Second operand 5 states and 94 transitions. [2024-11-09 02:50:56,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 307 flow [2024-11-09 02:50:56,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 299 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:50:56,319 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 170 flow [2024-11-09 02:50:56,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-11-09 02:50:56,322 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-11-09 02:50:56,322 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 170 flow [2024-11-09 02:50:56,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-09 02:50:56,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:56,322 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, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:56,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:50:56,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:56,523 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)] === [2024-11-09 02:50:56,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1503818552, now seen corresponding path program 1 times [2024-11-09 02:50:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307697752] [2024-11-09 02:50:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:56,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:57,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307697752] [2024-11-09 02:50:57,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307697752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004743410] [2024-11-09 02:50:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:57,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:57,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:57,457 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) [2024-11-09 02:50:57,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:50:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:57,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:50:57,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:57,811 INFO L349 Elim1Store]: treesize reduction 36, result has 54.4 percent of original size [2024-11-09 02:50:57,812 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 58 [2024-11-09 02:50:58,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:50:58,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 107 treesize of output 499 [2024-11-09 02:51:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:03,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:24,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:24,036 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 38 treesize of output 83 [2024-11-09 02:51:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004743410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:24,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 26 [2024-11-09 02:51:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689405710] [2024-11-09 02:51:24,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:24,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 02:51:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 02:51:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=589, Unknown=3, NotChecked=0, Total=702 [2024-11-09 02:51:28,550 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] [2024-11-09 02:51:32,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 02:51:36,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 02:51:36,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-11-09 02:51:36,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 170 flow. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 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) [2024-11-09 02:51:36,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:36,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-11-09 02:51:36,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:40,261 INFO L124 PetriNetUnfolderBase]: 2493/3878 cut-off events. [2024-11-09 02:51:40,262 INFO L125 PetriNetUnfolderBase]: For 3708/3724 co-relation queries the response was YES. [2024-11-09 02:51:40,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10639 conditions, 3878 events. 2493/3878 cut-off events. For 3708/3724 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 19130 event pairs, 72 based on Foata normal form. 1/3754 useless extension candidates. Maximal degree in co-relation 10595. Up to 1636 conditions per place. [2024-11-09 02:51:40,291 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 160 selfloop transitions, 47 changer transitions 1/212 dead transitions. [2024-11-09 02:51:40,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 212 transitions, 1207 flow [2024-11-09 02:51:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 02:51:40,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 02:51:40,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 323 transitions. [2024-11-09 02:51:40,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601139601139601 [2024-11-09 02:51:40,293 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 170 flow. Second operand 18 states and 323 transitions. [2024-11-09 02:51:40,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 212 transitions, 1207 flow [2024-11-09 02:51:40,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 212 transitions, 1187 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 02:51:40,300 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 562 flow [2024-11-09 02:51:40,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=562, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2024-11-09 02:51:40,302 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-11-09 02:51:40,302 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 562 flow [2024-11-09 02:51:40,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 27 states have internal predecessors, (282), 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) [2024-11-09 02:51:40,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:40,303 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, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:40,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:40,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:40,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:51:40,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:40,504 INFO L85 PathProgramCache]: Analyzing trace with hash -100629604, now seen corresponding path program 2 times [2024-11-09 02:51:40,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:40,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786155377] [2024-11-09 02:51:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786155377] [2024-11-09 02:51:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786155377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660060546] [2024-11-09 02:51:41,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:41,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:41,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:41,802 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) [2024-11-09 02:51:41,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:51:41,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:41,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:41,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 02:51:41,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:41,985 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 [2024-11-09 02:51:42,048 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 02:51:42,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-09 02:51:42,105 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-09 02:51:42,105 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 16 treesize of output 18 [2024-11-09 02:51:42,356 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 02:51:42,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-09 02:51:43,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:43,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2024-11-09 02:51:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:51:43,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:43,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:43,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 316 treesize of output 296 [2024-11-09 02:51:43,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2024-11-09 02:51:43,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:51:43,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 382 treesize of output 334 [2024-11-09 02:51:49,988 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:50,111 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:51,452 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:51,593 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:51,685 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 02:51:51,812 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 02:51:51,915 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:52,186 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:52,367 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:52,530 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:52,582 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 02:51:52,650 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 02:51:52,885 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.