./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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-bad-three-array-sum-alt.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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:31:36,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:31:36,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:31:36,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:31:36,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:31:36,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:31:36,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:31:36,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:31:36,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:31:36,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:31:36,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:31:36,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:31:36,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:31:36,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:31:36,637 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:31:36,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:31:36,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:31:36,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:31:36,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:31:36,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:31:36,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:31:36,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:31:36,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:31:36,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:31:36,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:31:36,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:31:36,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:31:36,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:31:36,648 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:31:36,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:31:36,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:31:36,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:31:36,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:36,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:31:36,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:31:36,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:31:36,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:31:36,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:31:36,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:31:36,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:31:36,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:31:36,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:31:36,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2024-11-10 10:31:36,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:31:36,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:31:36,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:31:36,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:31:36,879 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:31:36,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-10 10:31:38,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:31:38,608 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:31:38,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-10 10:31:38,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11af79c05/22e21a995a3c4cfb862fec6bd6354d8d/FLAG6a774e800 [2024-11-10 10:31:38,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11af79c05/22e21a995a3c4cfb862fec6bd6354d8d [2024-11-10 10:31:38,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:31:38,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:31:38,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:38,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:31:38,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:31:38,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cce851a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38, skipping insertion in model container [2024-11-10 10:31:38,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,665 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:31:38,833 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-bad-three-array-sum-alt.wvr.c[2451,2464] [2024-11-10 10:31:38,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:38,850 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:31:38,873 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-bad-three-array-sum-alt.wvr.c[2451,2464] [2024-11-10 10:31:38,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:38,908 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:31:38,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38 WrapperNode [2024-11-10 10:31:38,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:38,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:38,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:31:38,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:31:38,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,955 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 259 [2024-11-10 10:31:38,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:38,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:31:38,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:31:38,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:31:38,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,989 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]. [2024-11-10 10:31:38,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,995 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:38,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:39,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:31:39,002 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:31:39,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:31:39,002 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:31:39,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (1/1) ... [2024-11-10 10:31:39,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:39,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:39,036 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) [2024-11-10 10:31:39,039 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 [2024-11-10 10:31:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:31:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:31:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:31:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:31:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:31:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:31:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:31:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:31:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:31:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:31:39,115 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:31:39,320 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:31:39,322 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:31:39,797 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:31:39,797 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:31:40,108 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:31:40,108 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:31:40,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:40 BoogieIcfgContainer [2024-11-10 10:31:40,109 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:31:40,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:31:40,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:31:40,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:31:40,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:31:38" (1/3) ... [2024-11-10 10:31:40,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec06556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:40, skipping insertion in model container [2024-11-10 10:31:40,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:38" (2/3) ... [2024-11-10 10:31:40,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec06556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:40, skipping insertion in model container [2024-11-10 10:31:40,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:40" (3/3) ... [2024-11-10 10:31:40,116 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2024-11-10 10:31:40,134 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:31:40,134 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:31:40,134 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:31:40,181 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:31:40,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2024-11-10 10:31:40,240 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-11-10 10:31:40,240 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-10 10:31:40,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2024-11-10 10:31:40,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2024-11-10 10:31:40,254 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:31:40,261 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;@bc27694, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:31:40,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:31:40,279 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:31:40,279 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2024-11-10 10:31:40,279 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:40,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:40,280 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] [2024-11-10 10:31:40,284 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)] === [2024-11-10 10:31:40,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1709335762, now seen corresponding path program 1 times [2024-11-10 10:31:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:40,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272470714] [2024-11-10 10:31:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:40,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272470714] [2024-11-10 10:31:40,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272470714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:40,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:40,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:40,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123021112] [2024-11-10 10:31:40,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:40,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:31:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:31:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:31:40,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 10:31:40,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 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) [2024-11-10 10:31:40,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:40,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 10:31:40,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:40,819 INFO L124 PetriNetUnfolderBase]: 202/351 cut-off events. [2024-11-10 10:31:40,819 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-10 10:31:40,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 351 events. 202/351 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1251 event pairs, 124 based on Foata normal form. 78/413 useless extension candidates. Maximal degree in co-relation 580. Up to 299 conditions per place. [2024-11-10 10:31:40,824 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 26 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-10 10:31:40,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 148 flow [2024-11-10 10:31:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:31:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:31:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2024-11-10 10:31:40,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-10 10:31:40,835 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 2 states and 64 transitions. [2024-11-10 10:31:40,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 148 flow [2024-11-10 10:31:40,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:31:40,840 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 84 flow [2024-11-10 10:31:40,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2024-11-10 10:31:40,845 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2024-11-10 10:31:40,845 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 84 flow [2024-11-10 10:31:40,845 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) [2024-11-10 10:31:40,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:40,846 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] [2024-11-10 10:31:40,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:31:40,846 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)] === [2024-11-10 10:31:40,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1270482305, now seen corresponding path program 1 times [2024-11-10 10:31:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65242584] [2024-11-10 10:31:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65242584] [2024-11-10 10:31:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65242584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315794798] [2024-11-10 10:31:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:41,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 10:31:41,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2024-11-10 10:31:41,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 10:31:41,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:41,279 INFO L124 PetriNetUnfolderBase]: 389/695 cut-off events. [2024-11-10 10:31:41,279 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:31:41,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 695 events. 389/695 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3255 event pairs, 124 based on Foata normal form. 1/680 useless extension candidates. Maximal degree in co-relation 1288. Up to 349 conditions per place. [2024-11-10 10:31:41,283 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 38 selfloop transitions, 4 changer transitions 1/56 dead transitions. [2024-11-10 10:31:41,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 209 flow [2024-11-10 10:31:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-10 10:31:41,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6258503401360545 [2024-11-10 10:31:41,284 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 84 flow. Second operand 3 states and 92 transitions. [2024-11-10 10:31:41,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 209 flow [2024-11-10 10:31:41,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:41,287 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 110 flow [2024-11-10 10:31:41,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-10 10:31:41,287 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2024-11-10 10:31:41,287 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 110 flow [2024-11-10 10:31:41,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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) [2024-11-10 10:31:41,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:41,288 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, 1] [2024-11-10 10:31:41,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:31:41,288 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)] === [2024-11-10 10:31:41,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash 807410620, now seen corresponding path program 1 times [2024-11-10 10:31:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:41,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808375549] [2024-11-10 10:31:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:41,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808375549] [2024-11-10 10:31:41,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808375549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:41,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336247592] [2024-11-10 10:31:41,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:31:41,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-10 10:31:41,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:41,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-10 10:31:41,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:41,792 INFO L124 PetriNetUnfolderBase]: 707/1264 cut-off events. [2024-11-10 10:31:41,792 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-11-10 10:31:41,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2750 conditions, 1264 events. 707/1264 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6646 event pairs, 351 based on Foata normal form. 46/1275 useless extension candidates. Maximal degree in co-relation 2745. Up to 574 conditions per place. [2024-11-10 10:31:41,800 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 64 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-11-10 10:31:41,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 86 transitions, 380 flow [2024-11-10 10:31:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:31:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:31:41,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-11-10 10:31:41,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-10 10:31:41,802 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 110 flow. Second operand 6 states and 150 transitions. [2024-11-10 10:31:41,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 86 transitions, 380 flow [2024-11-10 10:31:41,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 86 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:41,804 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 206 flow [2024-11-10 10:31:41,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2024-11-10 10:31:41,805 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-10 10:31:41,805 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 206 flow [2024-11-10 10:31:41,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:41,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:41,806 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, 1] [2024-11-10 10:31:41,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:31:41,806 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)] === [2024-11-10 10:31:41,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1221487214, now seen corresponding path program 1 times [2024-11-10 10:31:41,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557270212] [2024-11-10 10:31:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557270212] [2024-11-10 10:31:41,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557270212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624426515] [2024-11-10 10:31:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:31:41,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-10 10:31:41,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:41,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-10 10:31:41,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:42,205 INFO L124 PetriNetUnfolderBase]: 615/1141 cut-off events. [2024-11-10 10:31:42,206 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2024-11-10 10:31:42,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 1141 events. 615/1141 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6056 event pairs, 348 based on Foata normal form. 41/1161 useless extension candidates. Maximal degree in co-relation 2654. Up to 574 conditions per place. [2024-11-10 10:31:42,214 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 59 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-11-10 10:31:42,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 434 flow [2024-11-10 10:31:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:31:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:31:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-10 10:31:42,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2024-11-10 10:31:42,219 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 206 flow. Second operand 6 states and 145 transitions. [2024-11-10 10:31:42,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 434 flow [2024-11-10 10:31:42,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:42,226 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 247 flow [2024-11-10 10:31:42,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-11-10 10:31:42,227 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-11-10 10:31:42,228 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 247 flow [2024-11-10 10:31:42,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:42,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:42,229 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, 1] [2024-11-10 10:31:42,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:31:42,229 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)] === [2024-11-10 10:31:42,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash -286125144, now seen corresponding path program 1 times [2024-11-10 10:31:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:42,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803149914] [2024-11-10 10:31:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:42,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:42,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803149914] [2024-11-10 10:31:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803149914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:42,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:42,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577824991] [2024-11-10 10:31:42,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:42,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:31:42,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-10 10:31:42,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:42,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:42,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-10 10:31:42,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:42,646 INFO L124 PetriNetUnfolderBase]: 515/960 cut-off events. [2024-11-10 10:31:42,647 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2024-11-10 10:31:42,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 960 events. 515/960 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4826 event pairs, 333 based on Foata normal form. 22/958 useless extension candidates. Maximal degree in co-relation 2510. Up to 574 conditions per place. [2024-11-10 10:31:42,652 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 29 selfloop transitions, 6 changer transitions 30/75 dead transitions. [2024-11-10 10:31:42,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 445 flow [2024-11-10 10:31:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:31:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:31:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-10 10:31:42,654 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-11-10 10:31:42,654 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 247 flow. Second operand 6 states and 141 transitions. [2024-11-10 10:31:42,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 445 flow [2024-11-10 10:31:42,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 426 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:42,659 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 188 flow [2024-11-10 10:31:42,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2024-11-10 10:31:42,660 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-11-10 10:31:42,661 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 188 flow [2024-11-10 10:31:42,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:42,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:42,661 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] [2024-11-10 10:31:42,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:31:42,662 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)] === [2024-11-10 10:31:42,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash -98587059, now seen corresponding path program 1 times [2024-11-10 10:31:42,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:42,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945110708] [2024-11-10 10:31:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:42,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:42,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945110708] [2024-11-10 10:31:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945110708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142907569] [2024-11-10 10:31:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:42,774 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) [2024-11-10 10:31:42,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:31:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:31:42,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:42,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142907569] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:43,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:43,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:31:43,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874863612] [2024-11-10 10:31:43,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:43,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:43,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:31:43,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-11-10 10:31:43,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-10 10:31:43,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:43,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-11-10 10:31:43,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:43,254 INFO L124 PetriNetUnfolderBase]: 440/756 cut-off events. [2024-11-10 10:31:43,254 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-11-10 10:31:43,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 756 events. 440/756 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3407 event pairs, 176 based on Foata normal form. 50/781 useless extension candidates. Maximal degree in co-relation 2077. Up to 478 conditions per place. [2024-11-10 10:31:43,259 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 44 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-11-10 10:31:43,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 340 flow [2024-11-10 10:31:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-10 10:31:43,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4204081632653061 [2024-11-10 10:31:43,260 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 188 flow. Second operand 5 states and 103 transitions. [2024-11-10 10:31:43,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 340 flow [2024-11-10 10:31:43,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 270 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-11-10 10:31:43,264 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 155 flow [2024-11-10 10:31:43,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-10 10:31:43,265 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-10 10:31:43,266 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 155 flow [2024-11-10 10:31:43,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-10 10:31:43,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:43,266 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] [2024-11-10 10:31:43,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:31:43,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 10:31:43,471 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)] === [2024-11-10 10:31:43,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:43,472 INFO L85 PathProgramCache]: Analyzing trace with hash -654905891, now seen corresponding path program 1 times [2024-11-10 10:31:43,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:43,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434074691] [2024-11-10 10:31:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:43,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434074691] [2024-11-10 10:31:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434074691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914380264] [2024-11-10 10:31:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:43,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:43,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:43,590 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) [2024-11-10 10:31:43,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:31:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:43,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:31:43,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:43,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914380264] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:43,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:43,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:31:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372320172] [2024-11-10 10:31:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:43,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:31:43,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-11-10 10:31:43,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-10 10:31:43,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:43,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-11-10 10:31:43,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:43,917 INFO L124 PetriNetUnfolderBase]: 461/802 cut-off events. [2024-11-10 10:31:43,918 INFO L125 PetriNetUnfolderBase]: For 573/590 co-relation queries the response was YES. [2024-11-10 10:31:43,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 802 events. 461/802 cut-off events. For 573/590 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3550 event pairs, 201 based on Foata normal form. 42/816 useless extension candidates. Maximal degree in co-relation 1953. Up to 533 conditions per place. [2024-11-10 10:31:43,922 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 47 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-11-10 10:31:43,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 314 flow [2024-11-10 10:31:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-10 10:31:43,924 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42448979591836733 [2024-11-10 10:31:43,924 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 155 flow. Second operand 5 states and 104 transitions. [2024-11-10 10:31:43,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 314 flow [2024-11-10 10:31:43,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:31:43,926 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 171 flow [2024-11-10 10:31:43,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2024-11-10 10:31:43,927 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-10 10:31:43,927 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 171 flow [2024-11-10 10:31:43,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-10 10:31:43,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:43,927 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-10 10:31:43,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:31:44,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 10:31:44,129 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)] === [2024-11-10 10:31:44,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1432477364, now seen corresponding path program 1 times [2024-11-10 10:31:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362884448] [2024-11-10 10:31:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:31:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362884448] [2024-11-10 10:31:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362884448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551253026] [2024-11-10 10:31:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:44,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:44,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:44,275 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) [2024-11-10 10:31:44,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:31:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:44,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:31:44,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:31:44,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 10:31:44,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551253026] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:44,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:44,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:31:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339320089] [2024-11-10 10:31:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:44,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:31:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:31:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:31:44,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-11-10 10:31:44,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:44,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:44,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-11-10 10:31:44,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:44,628 INFO L124 PetriNetUnfolderBase]: 521/849 cut-off events. [2024-11-10 10:31:44,628 INFO L125 PetriNetUnfolderBase]: For 953/1041 co-relation queries the response was YES. [2024-11-10 10:31:44,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 849 events. 521/849 cut-off events. For 953/1041 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3677 event pairs, 262 based on Foata normal form. 37/863 useless extension candidates. Maximal degree in co-relation 2288. Up to 631 conditions per place. [2024-11-10 10:31:44,634 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 47 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-11-10 10:31:44,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 338 flow [2024-11-10 10:31:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-11-10 10:31:44,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4163265306122449 [2024-11-10 10:31:44,635 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 171 flow. Second operand 5 states and 102 transitions. [2024-11-10 10:31:44,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 338 flow [2024-11-10 10:31:44,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:44,637 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 185 flow [2024-11-10 10:31:44,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=185, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-11-10 10:31:44,639 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-10 10:31:44,640 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 185 flow [2024-11-10 10:31:44,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-10 10:31:44,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:44,640 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:31:44,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 10:31:44,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:44,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:31:44,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash 57208429, now seen corresponding path program 1 times [2024-11-10 10:31:44,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:44,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142813603] [2024-11-10 10:31:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:44,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:45,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:45,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142813603] [2024-11-10 10:31:45,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142813603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:45,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632796468] [2024-11-10 10:31:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:45,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:45,474 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) [2024-11-10 10:31:45,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:31:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:45,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 10:31:45,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:45,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:45,819 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 28 treesize of output 24 [2024-11-10 10:31:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:45,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:58,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:58,029 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 20 treesize of output 17 [2024-11-10 10:31:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632796468] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:58,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2024-11-10 10:31:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050469241] [2024-11-10 10:31:58,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:58,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 10:31:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 10:31:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=390, Unknown=3, NotChecked=0, Total=462 [2024-11-10 10:32:02,100 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] [2024-11-10 10:32:06,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:32:10,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 10:32:10,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-10 10:32:10,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 185 flow. Second operand has 22 states, 22 states have (on average 16.40909090909091) internal successors, (361), 22 states have internal predecessors, (361), 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) [2024-11-10 10:32:10,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:10,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-10 10:32:10,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:11,152 INFO L124 PetriNetUnfolderBase]: 1286/2080 cut-off events. [2024-11-10 10:32:11,152 INFO L125 PetriNetUnfolderBase]: For 2399/2399 co-relation queries the response was YES. [2024-11-10 10:32:11,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5897 conditions, 2080 events. 1286/2080 cut-off events. For 2399/2399 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10037 event pairs, 76 based on Foata normal form. 1/2080 useless extension candidates. Maximal degree in co-relation 5888. Up to 1260 conditions per place. [2024-11-10 10:32:11,167 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 88 selfloop transitions, 25 changer transitions 1/124 dead transitions. [2024-11-10 10:32:11,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 124 transitions, 696 flow [2024-11-10 10:32:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:32:11,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:32:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-10 10:32:11,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48775510204081635 [2024-11-10 10:32:11,169 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 185 flow. Second operand 10 states and 239 transitions. [2024-11-10 10:32:11,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 124 transitions, 696 flow [2024-11-10 10:32:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 124 transitions, 679 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:32:11,172 INFO L231 Difference]: Finished difference. Result has 62 places, 68 transitions, 378 flow [2024-11-10 10:32:11,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=62, PETRI_TRANSITIONS=68} [2024-11-10 10:32:11,173 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-11-10 10:32:11,173 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 68 transitions, 378 flow [2024-11-10 10:32:11,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.40909090909091) internal successors, (361), 22 states have internal predecessors, (361), 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) [2024-11-10 10:32:11,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:11,177 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:32:11,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:32:11,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:11,378 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:32:11,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1023207093, now seen corresponding path program 2 times [2024-11-10 10:32:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604066624] [2024-11-10 10:32:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:12,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:12,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604066624] [2024-11-10 10:32:12,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604066624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:12,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506079180] [2024-11-10 10:32:12,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:32:12,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:12,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:12,670 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) [2024-11-10 10:32:12,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:32:12,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:32:12,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:12,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 10:32:12,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:13,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:13,339 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 28 treesize of output 20 [2024-11-10 10:32:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:13,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:13,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:13,469 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 42 treesize of output 95 [2024-11-10 10:32:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506079180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:13,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 7] total 26 [2024-11-10 10:32:13,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241204442] [2024-11-10 10:32:13,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:13,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 10:32:13,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:13,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 10:32:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:32:13,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 10:32:13,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 68 transitions, 378 flow. Second operand has 27 states, 27 states have (on average 18.59259259259259) internal successors, (502), 27 states have internal predecessors, (502), 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) [2024-11-10 10:32:13,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:13,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 10:32:13,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:14,947 INFO L124 PetriNetUnfolderBase]: 775/1426 cut-off events. [2024-11-10 10:32:14,947 INFO L125 PetriNetUnfolderBase]: For 2999/3103 co-relation queries the response was YES. [2024-11-10 10:32:14,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 1426 events. 775/1426 cut-off events. For 2999/3103 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7609 event pairs, 137 based on Foata normal form. 1/1399 useless extension candidates. Maximal degree in co-relation 4610. Up to 975 conditions per place. [2024-11-10 10:32:14,954 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 69 selfloop transitions, 35 changer transitions 1/118 dead transitions. [2024-11-10 10:32:14,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 118 transitions, 848 flow [2024-11-10 10:32:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:32:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:32:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 321 transitions. [2024-11-10 10:32:14,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2024-11-10 10:32:14,956 INFO L175 Difference]: Start difference. First operand has 62 places, 68 transitions, 378 flow. Second operand 15 states and 321 transitions. [2024-11-10 10:32:14,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 118 transitions, 848 flow [2024-11-10 10:32:14,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 793 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-10 10:32:14,959 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 634 flow [2024-11-10 10:32:14,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=634, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-11-10 10:32:14,960 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-11-10 10:32:14,960 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 634 flow [2024-11-10 10:32:14,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 18.59259259259259) internal successors, (502), 27 states have internal predecessors, (502), 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) [2024-11-10 10:32:14,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:14,960 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:32:14,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:32:15,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:32:15,165 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:32:15,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash -136865267, now seen corresponding path program 3 times [2024-11-10 10:32:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782624065] [2024-11-10 10:32:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:32:15,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782624065] [2024-11-10 10:32:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782624065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925848416] [2024-11-10 10:32:15,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:32:15,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:15,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:32:15,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:32:16,010 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:32:16,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:16,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 10:32:16,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:16,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:16,613 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 28 treesize of output 20 [2024-11-10 10:32:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:16,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:16,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:16,801 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 87 [2024-11-10 10:32:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925848416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:17,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 7] total 25 [2024-11-10 10:32:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913245256] [2024-11-10 10:32:17,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:17,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 10:32:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 10:32:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2024-11-10 10:32:17,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 10:32:17,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 634 flow. Second operand has 26 states, 26 states have (on average 18.692307692307693) internal successors, (486), 26 states have internal predecessors, (486), 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) [2024-11-10 10:32:17,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:17,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 10:32:17,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:17,938 INFO L124 PetriNetUnfolderBase]: 896/1645 cut-off events. [2024-11-10 10:32:17,939 INFO L125 PetriNetUnfolderBase]: For 4599/4747 co-relation queries the response was YES. [2024-11-10 10:32:17,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1645 events. 896/1645 cut-off events. For 4599/4747 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9138 event pairs, 162 based on Foata normal form. 17/1635 useless extension candidates. Maximal degree in co-relation 5755. Up to 1126 conditions per place. [2024-11-10 10:32:17,959 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 84 selfloop transitions, 45 changer transitions 1/143 dead transitions. [2024-11-10 10:32:17,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 143 transitions, 1165 flow [2024-11-10 10:32:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:32:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:32:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 294 transitions. [2024-11-10 10:32:17,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-11-10 10:32:17,960 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 634 flow. Second operand 13 states and 294 transitions. [2024-11-10 10:32:17,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 143 transitions, 1165 flow [2024-11-10 10:32:17,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 1117 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-11-10 10:32:17,972 INFO L231 Difference]: Finished difference. Result has 92 places, 111 transitions, 917 flow [2024-11-10 10:32:17,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=917, PETRI_PLACES=92, PETRI_TRANSITIONS=111} [2024-11-10 10:32:17,976 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-11-10 10:32:17,977 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 111 transitions, 917 flow [2024-11-10 10:32:17,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.692307692307693) internal successors, (486), 26 states have internal predecessors, (486), 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) [2024-11-10 10:32:17,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:17,978 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:32:17,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:32:18,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:18,183 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:32:18,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1645944693, now seen corresponding path program 4 times [2024-11-10 10:32:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:18,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765403835] [2024-11-10 10:32:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:18,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:18,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765403835] [2024-11-10 10:32:18,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765403835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:18,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747428103] [2024-11-10 10:32:18,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:32:18,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:18,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:18,903 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:32:18,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:32:18,992 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:32:18,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:18,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 10:32:18,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:19,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:19,280 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 28 treesize of output 24 [2024-11-10 10:32:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:19,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:51,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:32:51,805 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 42 treesize of output 95 [2024-11-10 10:32:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:32:52,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747428103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:52,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:52,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2024-11-10 10:32:52,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50027950] [2024-11-10 10:32:52,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:52,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 10:32:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 10:32:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=375, Unknown=8, NotChecked=0, Total=462 [2024-11-10 10:32:56,838 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] [2024-11-10 10:32:56,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-10 10:32:56,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 111 transitions, 917 flow. Second operand has 22 states, 22 states have (on average 18.136363636363637) internal successors, (399), 22 states have internal predecessors, (399), 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) [2024-11-10 10:32:56,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:56,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-10 10:32:56,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:58,516 INFO L124 PetriNetUnfolderBase]: 1175/1995 cut-off events. [2024-11-10 10:32:58,516 INFO L125 PetriNetUnfolderBase]: For 8426/8654 co-relation queries the response was YES. [2024-11-10 10:32:58,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1995 events. 1175/1995 cut-off events. For 8426/8654 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10851 event pairs, 303 based on Foata normal form. 15/1974 useless extension candidates. Maximal degree in co-relation 7596. Up to 1519 conditions per place. [2024-11-10 10:32:58,536 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 96 selfloop transitions, 45 changer transitions 1/154 dead transitions. [2024-11-10 10:32:58,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 154 transitions, 1490 flow [2024-11-10 10:32:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:32:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:32:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-11-10 10:32:58,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.463265306122449 [2024-11-10 10:32:58,537 INFO L175 Difference]: Start difference. First operand has 92 places, 111 transitions, 917 flow. Second operand 10 states and 227 transitions. [2024-11-10 10:32:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 154 transitions, 1490 flow [2024-11-10 10:32:58,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 1379 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-10 10:32:58,547 INFO L231 Difference]: Finished difference. Result has 99 places, 130 transitions, 1183 flow [2024-11-10 10:32:58,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=99, PETRI_TRANSITIONS=130} [2024-11-10 10:32:58,547 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-11-10 10:32:58,548 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 130 transitions, 1183 flow [2024-11-10 10:32:58,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.136363636363637) internal successors, (399), 22 states have internal predecessors, (399), 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) [2024-11-10 10:32:58,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:58,548 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:32:58,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 10:32:58,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:58,753 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:32:58,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:58,760 INFO L85 PathProgramCache]: Analyzing trace with hash 788174353, now seen corresponding path program 5 times [2024-11-10 10:32:58,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:58,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12184185] [2024-11-10 10:32:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:58,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:32:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12184185] [2024-11-10 10:32:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12184185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327389335] [2024-11-10 10:32:59,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:32:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:59,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:59,681 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:32:59,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:32:59,782 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:32:59,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:59,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-10 10:32:59,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:01,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:01,242 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 28 treesize of output 20 [2024-11-10 10:33:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:33:01,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:01,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:01,510 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 20 treesize of output 17 [2024-11-10 10:33:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:33:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327389335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:01,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 7] total 25 [2024-11-10 10:33:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690377920] [2024-11-10 10:33:01,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:01,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 10:33:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 10:33:01,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2024-11-10 10:33:01,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 10:33:01,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 130 transitions, 1183 flow. Second operand has 26 states, 26 states have (on average 18.692307692307693) internal successors, (486), 26 states have internal predecessors, (486), 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) [2024-11-10 10:33:01,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:01,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 10:33:01,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:03,605 INFO L124 PetriNetUnfolderBase]: 1073/1985 cut-off events. [2024-11-10 10:33:03,606 INFO L125 PetriNetUnfolderBase]: For 9064/9270 co-relation queries the response was YES. [2024-11-10 10:33:03,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7708 conditions, 1985 events. 1073/1985 cut-off events. For 9064/9270 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11744 event pairs, 152 based on Foata normal form. 23/1977 useless extension candidates. Maximal degree in co-relation 7677. Up to 1270 conditions per place. [2024-11-10 10:33:03,624 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 101 selfloop transitions, 65 changer transitions 1/180 dead transitions. [2024-11-10 10:33:03,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 1746 flow [2024-11-10 10:33:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:33:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:33:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 303 transitions. [2024-11-10 10:33:03,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47566718995290425 [2024-11-10 10:33:03,626 INFO L175 Difference]: Start difference. First operand has 99 places, 130 transitions, 1183 flow. Second operand 13 states and 303 transitions. [2024-11-10 10:33:03,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 1746 flow [2024-11-10 10:33:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 180 transitions, 1678 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:03,644 INFO L231 Difference]: Finished difference. Result has 113 places, 140 transitions, 1384 flow [2024-11-10 10:33:03,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1384, PETRI_PLACES=113, PETRI_TRANSITIONS=140} [2024-11-10 10:33:03,645 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-11-10 10:33:03,645 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 140 transitions, 1384 flow [2024-11-10 10:33:03,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.692307692307693) internal successors, (486), 26 states have internal predecessors, (486), 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) [2024-11-10 10:33:03,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:03,646 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:33:03,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 10:33:03,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:33:03,847 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:33:03,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash 812593313, now seen corresponding path program 6 times [2024-11-10 10:33:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962399864] [2024-11-10 10:33:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:04,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962399864] [2024-11-10 10:33:04,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962399864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:04,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041805481] [2024-11-10 10:33:04,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:33:04,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:04,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:04,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:04,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:33:04,891 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:33:04,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:04,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 10:33:04,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:06,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:06,124 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 28 treesize of output 20 [2024-11-10 10:33:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:33:06,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:06,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:06,541 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 34 treesize of output 87 [2024-11-10 10:33:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:33:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041805481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:06,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:06,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 7] total 26 [2024-11-10 10:33:06,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999830904] [2024-11-10 10:33:06,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:06,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 10:33:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 10:33:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2024-11-10 10:33:07,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 10:33:07,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 140 transitions, 1384 flow. Second operand has 27 states, 27 states have (on average 18.51851851851852) internal successors, (500), 27 states have internal predecessors, (500), 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) [2024-11-10 10:33:07,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:07,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 10:33:07,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:10,037 INFO L124 PetriNetUnfolderBase]: 1256/2272 cut-off events. [2024-11-10 10:33:10,037 INFO L125 PetriNetUnfolderBase]: For 14189/14459 co-relation queries the response was YES. [2024-11-10 10:33:10,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 2272 events. 1256/2272 cut-off events. For 14189/14459 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13599 event pairs, 291 based on Foata normal form. 23/2250 useless extension candidates. Maximal degree in co-relation 9472. Up to 1548 conditions per place. [2024-11-10 10:33:10,078 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 117 selfloop transitions, 64 changer transitions 1/195 dead transitions. [2024-11-10 10:33:10,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 195 transitions, 2139 flow [2024-11-10 10:33:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:33:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:33:10,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 300 transitions. [2024-11-10 10:33:10,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47095761381475665 [2024-11-10 10:33:10,083 INFO L175 Difference]: Start difference. First operand has 113 places, 140 transitions, 1384 flow. Second operand 13 states and 300 transitions. [2024-11-10 10:33:10,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 195 transitions, 2139 flow [2024-11-10 10:33:10,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 195 transitions, 1957 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-10 10:33:10,125 INFO L231 Difference]: Finished difference. Result has 120 places, 159 transitions, 1671 flow [2024-11-10 10:33:10,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1671, PETRI_PLACES=120, PETRI_TRANSITIONS=159} [2024-11-10 10:33:10,130 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 77 predicate places. [2024-11-10 10:33:10,131 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 159 transitions, 1671 flow [2024-11-10 10:33:10,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 18.51851851851852) internal successors, (500), 27 states have internal predecessors, (500), 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) [2024-11-10 10:33:10,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:10,132 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-10 10:33:10,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:33:10,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 10:33:10,333 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:33:10,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1880807667, now seen corresponding path program 7 times [2024-11-10 10:33:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52791397] [2024-11-10 10:33:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:11,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:11,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52791397] [2024-11-10 10:33:11,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52791397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:11,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856261095] [2024-11-10 10:33:11,984 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:33:11,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:11,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:11,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:33:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:12,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 10:33:12,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:12,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:12,913 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 28 treesize of output 24 [2024-11-10 10:33:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:33:12,953 INFO L311 TraceCheckSpWp]: Computing backward predicates...