./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 3289d67d 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-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:30:06,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:30:06,496 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:30:06,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:30:06,502 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:30:06,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:30:06,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:30:06,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:30:06,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:30:06,530 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:30:06,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:30:06,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:30:06,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:30:06,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:30:06,533 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:30:06,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:30:06,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:30:06,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:30:06,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:30:06,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:30:06,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:30:06,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:30:06,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:30:06,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:30:06,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:30:06,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:30:06,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:30:06,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:30:06,540 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:30:06,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:30:06,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:30:06,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:30:06,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:30:06,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:30:06,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:30:06,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:30:06,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:30:06,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:30:06,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:30:06,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:30:06,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:30:06,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:30:06,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-11-16 19:30:06,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:30:06,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:30:06,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:30:06,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:30:06,788 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:30:06,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-16 19:30:08,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:30:08,317 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:30:08,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-11-16 19:30:08,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e558df5a8/625a46dbdac943078ab4541148248d9c/FLAG42b22de39 [2024-11-16 19:30:08,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e558df5a8/625a46dbdac943078ab4541148248d9c [2024-11-16 19:30:08,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:30:08,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:30:08,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:30:08,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:30:08,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:30:08,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5119f7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08, skipping insertion in model container [2024-11-16 19:30:08,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:30:08,508 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] [2024-11-16 19:30:08,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:30:08,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:30:08,568 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] [2024-11-16 19:30:08,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:30:08,603 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:30:08,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08 WrapperNode [2024-11-16 19:30:08,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:30:08,610 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:30:08,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:30:08,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:30:08,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,670 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 259 [2024-11-16 19:30:08,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:30:08,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:30:08,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:30:08,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:30:08,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,708 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]. [2024-11-16 19:30:08,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,715 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,722 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:30:08,723 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:30:08,723 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:30:08,723 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:30:08,724 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (1/1) ... [2024-11-16 19:30:08,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:30:08,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:08,763 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) [2024-11-16 19:30:08,766 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 [2024-11-16 19:30:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:30:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:30:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:30:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:30:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:30:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:30:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:30:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:30:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:30:08,831 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:30:08,946 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:30:08,949 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:30:09,300 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:30:09,301 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:30:09,604 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:30:09,605 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:30:09,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:30:09 BoogieIcfgContainer [2024-11-16 19:30:09,606 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:30:09,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:30:09,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:30:09,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:30:09,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:30:08" (1/3) ... [2024-11-16 19:30:09,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbc5a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:30:09, skipping insertion in model container [2024-11-16 19:30:09,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:08" (2/3) ... [2024-11-16 19:30:09,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbc5a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:30:09, skipping insertion in model container [2024-11-16 19:30:09,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:30:09" (3/3) ... [2024-11-16 19:30:09,617 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-11-16 19:30:09,635 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:30:09,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:30:09,635 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:30:09,678 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:30:09,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 50 transitions, 121 flow [2024-11-16 19:30:09,747 INFO L124 PetriNetUnfolderBase]: 10/47 cut-off events. [2024-11-16 19:30:09,748 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:30:09,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 10/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-16 19:30:09,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 50 transitions, 121 flow [2024-11-16 19:30:09,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 46 transitions, 110 flow [2024-11-16 19:30:09,764 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:30:09,772 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;@37875643, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:30:09,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:30:09,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:30:09,788 INFO L124 PetriNetUnfolderBase]: 10/45 cut-off events. [2024-11-16 19:30:09,788 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:30:09,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:09,789 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] [2024-11-16 19:30:09,791 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)] === [2024-11-16 19:30:09,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash 712801107, now seen corresponding path program 1 times [2024-11-16 19:30:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741005127] [2024-11-16 19:30:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741005127] [2024-11-16 19:30:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741005127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:09,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850678190] [2024-11-16 19:30:09,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:09,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:30:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:30:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:30:10,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-16 19:30:10,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-16 19:30:10,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:10,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-16 19:30:10,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:10,259 INFO L124 PetriNetUnfolderBase]: 431/692 cut-off events. [2024-11-16 19:30:10,260 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-16 19:30:10,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 692 events. 431/692 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3227 event pairs, 306 based on Foata normal form. 125/736 useless extension candidates. Maximal degree in co-relation 1223. Up to 625 conditions per place. [2024-11-16 19:30:10,268 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 27 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2024-11-16 19:30:10,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 154 flow [2024-11-16 19:30:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:30:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:30:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 66 transitions. [2024-11-16 19:30:10,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-11-16 19:30:10,282 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 110 flow. Second operand 2 states and 66 transitions. [2024-11-16 19:30:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 154 flow [2024-11-16 19:30:10,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:30:10,290 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 88 flow [2024-11-16 19:30:10,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-11-16 19:30:10,295 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-11-16 19:30:10,297 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 88 flow [2024-11-16 19:30:10,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-16 19:30:10,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:10,297 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] [2024-11-16 19:30:10,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:30:10,298 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)] === [2024-11-16 19:30:10,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -292055316, now seen corresponding path program 1 times [2024-11-16 19:30:10,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:10,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194232785] [2024-11-16 19:30:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:10,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194232785] [2024-11-16 19:30:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194232785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:10,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:10,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:10,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503853960] [2024-11-16 19:30:10,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:10,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:30:10,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:30:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:30:10,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-16 19:30:10,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-16 19:30:10,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:10,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-16 19:30:10,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:10,673 INFO L124 PetriNetUnfolderBase]: 618/1048 cut-off events. [2024-11-16 19:30:10,674 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-16 19:30:10,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1048 events. 618/1048 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5218 event pairs, 126 based on Foata normal form. 1/960 useless extension candidates. Maximal degree in co-relation 1975. Up to 677 conditions per place. [2024-11-16 19:30:10,682 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 39 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2024-11-16 19:30:10,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 58 transitions, 215 flow [2024-11-16 19:30:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:30:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:30:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-16 19:30:10,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-16 19:30:10,685 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 88 flow. Second operand 3 states and 96 transitions. [2024-11-16 19:30:10,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 58 transitions, 215 flow [2024-11-16 19:30:10,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:30:10,688 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 114 flow [2024-11-16 19:30:10,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2024-11-16 19:30:10,688 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-11-16 19:30:10,689 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 114 flow [2024-11-16 19:30:10,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-16 19:30:10,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:10,690 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:10,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:30:10,690 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)] === [2024-11-16 19:30:10,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1725510728, now seen corresponding path program 1 times [2024-11-16 19:30:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:10,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741991381] [2024-11-16 19:30:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:10,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741991381] [2024-11-16 19:30:10,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741991381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:10,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:10,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:30:10,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847192473] [2024-11-16 19:30:10,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:10,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:30:10,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:30:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:30:10,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-16 19:30:10,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-16 19:30:10,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:10,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-16 19:30:10,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:11,008 INFO L124 PetriNetUnfolderBase]: 619/1054 cut-off events. [2024-11-16 19:30:11,008 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-16 19:30:11,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1054 events. 619/1054 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5524 event pairs, 407 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 2264. Up to 899 conditions per place. [2024-11-16 19:30:11,013 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 30 selfloop transitions, 4 changer transitions 4/50 dead transitions. [2024-11-16 19:30:11,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 202 flow [2024-11-16 19:30:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:30:11,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:30:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-16 19:30:11,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-11-16 19:30:11,015 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 114 flow. Second operand 4 states and 97 transitions. [2024-11-16 19:30:11,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 202 flow [2024-11-16 19:30:11,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:11,016 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 138 flow [2024-11-16 19:30:11,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-11-16 19:30:11,017 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-16 19:30:11,017 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 138 flow [2024-11-16 19:30:11,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-11-16 19:30:11,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:11,018 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:11,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:30:11,018 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)] === [2024-11-16 19:30:11,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1504886975, now seen corresponding path program 1 times [2024-11-16 19:30:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687865118] [2024-11-16 19:30:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:30:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687865118] [2024-11-16 19:30:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687865118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:11,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:30:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971502403] [2024-11-16 19:30:11,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:11,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:30:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:30:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:30:11,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-16 19:30:11,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-16 19:30:11,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:11,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-16 19:30:11,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:11,315 INFO L124 PetriNetUnfolderBase]: 880/1408 cut-off events. [2024-11-16 19:30:11,316 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-16 19:30:11,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 1408 events. 880/1408 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7374 event pairs, 303 based on Foata normal form. 0/1305 useless extension candidates. Maximal degree in co-relation 2970. Up to 686 conditions per place. [2024-11-16 19:30:11,323 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 44 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-16 19:30:11,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 272 flow [2024-11-16 19:30:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:30:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:30:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-16 19:30:11,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-16 19:30:11,326 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 138 flow. Second operand 4 states and 102 transitions. [2024-11-16 19:30:11,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 272 flow [2024-11-16 19:30:11,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 262 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-16 19:30:11,328 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 149 flow [2024-11-16 19:30:11,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-11-16 19:30:11,328 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-16 19:30:11,329 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 149 flow [2024-11-16 19:30:11,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2024-11-16 19:30:11,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:11,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:11,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:30:11,330 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)] === [2024-11-16 19:30:11,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash -538384443, now seen corresponding path program 1 times [2024-11-16 19:30:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932059479] [2024-11-16 19:30:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:30:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932059479] [2024-11-16 19:30:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932059479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382206486] [2024-11-16 19:30:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:11,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:11,471 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) [2024-11-16 19:30:11,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:30:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:11,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:30:11,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:30:11,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:30:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382206486] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:11,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:30:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-16 19:30:11,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649845964] [2024-11-16 19:30:11,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:11,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:30:11,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:11,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:30:11,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:30:11,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-11-16 19:30:11,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-11-16 19:30:11,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:11,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-11-16 19:30:11,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:12,014 INFO L124 PetriNetUnfolderBase]: 974/1656 cut-off events. [2024-11-16 19:30:12,014 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2024-11-16 19:30:12,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 1656 events. 974/1656 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8755 event pairs, 329 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 3859. Up to 722 conditions per place. [2024-11-16 19:30:12,025 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 47 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-11-16 19:30:12,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 303 flow [2024-11-16 19:30:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:30:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:30:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-11-16 19:30:12,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.448 [2024-11-16 19:30:12,028 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 149 flow. Second operand 5 states and 112 transitions. [2024-11-16 19:30:12,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 303 flow [2024-11-16 19:30:12,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:30:12,033 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 168 flow [2024-11-16 19:30:12,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-16 19:30:12,035 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2024-11-16 19:30:12,035 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 168 flow [2024-11-16 19:30:12,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-11-16 19:30:12,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:12,037 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:12,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:30:12,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:12,241 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)] === [2024-11-16 19:30:12,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -822547457, now seen corresponding path program 1 times [2024-11-16 19:30:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:12,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537167730] [2024-11-16 19:30:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:13,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:13,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537167730] [2024-11-16 19:30:13,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537167730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:13,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869086427] [2024-11-16 19:30:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:13,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:13,222 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) [2024-11-16 19:30:13,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:30:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:13,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 19:30:13,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:13,339 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 [2024-11-16 19:30:13,385 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 [2024-11-16 19:30:13,465 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 19:30:13,465 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 [2024-11-16 19:30:13,504 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 [2024-11-16 19:30:13,730 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 [2024-11-16 19:30:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:13,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:30,771 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-16 19:30:30,773 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 3054 treesize of output 2144 [2024-11-16 19:30:30,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:30,868 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 921 treesize of output 849 [2024-11-16 19:30:34,658 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:30:34,814 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:30:34,815 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:30:34,886 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:30:55,744 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:30:56,155 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:31:06,214 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:31:07,126 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-16 19:31:07,174 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:31:07,226 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:31:15,236 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:31:15,320 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-16 19:31:16,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:31:16,090 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 44 treesize of output 42 [2024-11-16 19:31:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:31:24,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869086427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:31:24,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:31:24,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2024-11-16 19:31:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035311605] [2024-11-16 19:31:24,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:31:24,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 19:31:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:31:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 19:31:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=852, Unknown=6, NotChecked=0, Total=992 [2024-11-16 19:31:28,358 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] [2024-11-16 19:31:32,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 19:31:36,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 19:31:36,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:31:36,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 168 flow. Second operand has 32 states, 32 states have (on average 11.34375) internal successors, (363), 32 states have internal predecessors, (363), 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) [2024-11-16 19:31:36,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:31:36,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:31:36,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:31:40,872 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]