./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:52:35,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:52:35,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:52:35,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:52:35,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:52:35,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:52:35,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:52:35,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:52:36,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:52:36,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:52:36,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:52:36,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:52:36,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:52:36,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:52:36,004 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:52:36,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:52:36,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:52:36,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:52:36,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:52:36,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:52:36,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:52:36,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:52:36,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:52:36,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:52:36,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:52:36,009 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:52:36,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:52:36,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:52:36,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:52:36,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:52:36,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:52:36,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:52:36,015 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:52:36,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:52:36,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:36,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:52:36,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:52:36,017 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:52:36,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:52:36,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:52:36,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:52:36,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:52:36,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:52:36,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:52:36,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-17 07:52:36,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:52:36,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:52:36,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:52:36,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:52:36,323 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:52:36,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-17 07:52:37,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:52:37,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:52:37,970 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-17 07:52:37,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bfb6fbd/6d83fa05ba344434af839d932ae4eb89/FLAG89f3cfc60 [2024-11-17 07:52:38,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92bfb6fbd/6d83fa05ba344434af839d932ae4eb89 [2024-11-17 07:52:38,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:52:38,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:52:38,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:38,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:52:38,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:52:38,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260e672b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38, skipping insertion in model container [2024-11-17 07:52:38,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,367 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:52:38,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:38,627 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:52:38,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:38,696 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:52:38,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38 WrapperNode [2024-11-17 07:52:38,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:38,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:38,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:52:38,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:52:38,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,757 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 174 [2024-11-17 07:52:38,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:38,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:52:38,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:52:38,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:52:38,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,811 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-17 07:52:38,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,823 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:52:38,841 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:52:38,842 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:52:38,842 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:52:38,843 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (1/1) ... [2024-11-17 07:52:38,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:38,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:38,884 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) [2024-11-17 07:52:38,888 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 [2024-11-17 07:52:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:52:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:52:38,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:52:38,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:52:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:52:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:52:38,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:52:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:52:38,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:52:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:52:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:52:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:52:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:52:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:52:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:52:38,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:52:38,947 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:52:39,116 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:52:39,119 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:52:39,589 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:52:39,589 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:52:39,863 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:52:39,863 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:52:39,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:39 BoogieIcfgContainer [2024-11-17 07:52:39,864 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:52:39,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:52:39,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:52:39,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:52:39,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:52:38" (1/3) ... [2024-11-17 07:52:39,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342e1bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:39, skipping insertion in model container [2024-11-17 07:52:39,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:38" (2/3) ... [2024-11-17 07:52:39,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342e1bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:39, skipping insertion in model container [2024-11-17 07:52:39,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:39" (3/3) ... [2024-11-17 07:52:39,876 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-17 07:52:39,894 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:52:39,894 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-17 07:52:39,895 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:52:40,004 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:52:40,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 104 transitions, 229 flow [2024-11-17 07:52:40,112 INFO L124 PetriNetUnfolderBase]: 21/101 cut-off events. [2024-11-17 07:52:40,113 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:52:40,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 21/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2024-11-17 07:52:40,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 104 transitions, 229 flow [2024-11-17 07:52:40,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 99 transitions, 213 flow [2024-11-17 07:52:40,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:52:40,147 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;@2073ab66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:52:40,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-17 07:52:40,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:52:40,153 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-17 07:52:40,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:52:40,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:40,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:52:40,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:40,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash 22207645, now seen corresponding path program 1 times [2024-11-17 07:52:40,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:40,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645882315] [2024-11-17 07:52:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645882315] [2024-11-17 07:52:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645882315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:40,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596729039] [2024-11-17 07:52:40,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:40,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:40,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:52:40,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:40,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:40,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:52:40,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:41,612 INFO L124 PetriNetUnfolderBase]: 3762/7141 cut-off events. [2024-11-17 07:52:41,613 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-11-17 07:52:41,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12006 conditions, 7141 events. 3762/7141 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 54157 event pairs, 2256 based on Foata normal form. 414/5671 useless extension candidates. Maximal degree in co-relation 11319. Up to 4655 conditions per place. [2024-11-17 07:52:41,682 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 50 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2024-11-17 07:52:41,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 102 transitions, 339 flow [2024-11-17 07:52:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:41,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-11-17 07:52:41,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129807692307693 [2024-11-17 07:52:41,698 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 213 flow. Second operand 4 states and 255 transitions. [2024-11-17 07:52:41,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 102 transitions, 339 flow [2024-11-17 07:52:41,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 330 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:41,710 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 280 flow [2024-11-17 07:52:41,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2024-11-17 07:52:41,719 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-11-17 07:52:41,720 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 280 flow [2024-11-17 07:52:41,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:41,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:41,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 07:52:41,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:52:41,721 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:41,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash 776580489, now seen corresponding path program 1 times [2024-11-17 07:52:41,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:41,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315349408] [2024-11-17 07:52:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:41,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:41,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315349408] [2024-11-17 07:52:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315349408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011609034] [2024-11-17 07:52:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:41,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:41,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:41,883 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) [2024-11-17 07:52:41,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:52:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:41,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:41,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:42,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:42,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011609034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:42,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:52:42,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:52:42,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855589290] [2024-11-17 07:52:42,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:42,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:42,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:42,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:52:42,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:52:42,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 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) [2024-11-17 07:52:42,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:42,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:52:42,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:42,976 INFO L124 PetriNetUnfolderBase]: 3762/7138 cut-off events. [2024-11-17 07:52:42,976 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-17 07:52:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11958 conditions, 7138 events. 3762/7138 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 54147 event pairs, 2256 based on Foata normal form. 3/5257 useless extension candidates. Maximal degree in co-relation 11879. Up to 4640 conditions per place. [2024-11-17 07:52:43,032 INFO L140 encePairwiseOnDemand]: 91/104 looper letters, 40 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-11-17 07:52:43,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 382 flow [2024-11-17 07:52:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2024-11-17 07:52:43,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-11-17 07:52:43,041 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 280 flow. Second operand 6 states and 330 transitions. [2024-11-17 07:52:43,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 382 flow [2024-11-17 07:52:43,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:43,045 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 302 flow [2024-11-17 07:52:43,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2024-11-17 07:52:43,048 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2024-11-17 07:52:43,049 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 302 flow [2024-11-17 07:52:43,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 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) [2024-11-17 07:52:43,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:43,049 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-17 07:52:43,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:52:43,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:43,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:43,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1695808007, now seen corresponding path program 1 times [2024-11-17 07:52:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:43,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800963783] [2024-11-17 07:52:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:43,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800963783] [2024-11-17 07:52:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800963783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653882037] [2024-11-17 07:52:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:43,360 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) [2024-11-17 07:52:43,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:52:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:43,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:43,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:43,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653882037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:43,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:52:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681344242] [2024-11-17 07:52:43,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:43,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:52:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:52:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:52:43,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:52:43,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 302 flow. Second operand has 12 states, 12 states have (on average 46.083333333333336) internal successors, (553), 12 states have internal predecessors, (553), 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) [2024-11-17 07:52:43,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:43,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:52:43,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:44,490 INFO L124 PetriNetUnfolderBase]: 3771/7192 cut-off events. [2024-11-17 07:52:44,490 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-17 07:52:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12117 conditions, 7192 events. 3771/7192 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 54816 event pairs, 2256 based on Foata normal form. 9/5320 useless extension candidates. Maximal degree in co-relation 11881. Up to 4655 conditions per place. [2024-11-17 07:52:44,555 INFO L140 encePairwiseOnDemand]: 91/104 looper letters, 47 selfloop transitions, 37 changer transitions 0/126 dead transitions. [2024-11-17 07:52:44,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 644 flow [2024-11-17 07:52:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:52:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:52:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 543 transitions. [2024-11-17 07:52:44,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5221153846153846 [2024-11-17 07:52:44,560 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 302 flow. Second operand 10 states and 543 transitions. [2024-11-17 07:52:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 644 flow [2024-11-17 07:52:44,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 561 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:44,565 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 517 flow [2024-11-17 07:52:44,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2024-11-17 07:52:44,566 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2024-11-17 07:52:44,566 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 517 flow [2024-11-17 07:52:44,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 46.083333333333336) internal successors, (553), 12 states have internal predecessors, (553), 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) [2024-11-17 07:52:44,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:44,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:44,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:52:44,768 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,SelfDestructingSolverStorable2 [2024-11-17 07:52:44,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:44,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 754316412, now seen corresponding path program 1 times [2024-11-17 07:52:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:44,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121193445] [2024-11-17 07:52:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:44,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:44,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121193445] [2024-11-17 07:52:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121193445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9789469] [2024-11-17 07:52:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:44,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:44,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-17 07:52:44,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 126 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2024-11-17 07:52:44,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:44,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-17 07:52:44,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:46,020 INFO L124 PetriNetUnfolderBase]: 6690/11531 cut-off events. [2024-11-17 07:52:46,024 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-17 07:52:46,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 11531 events. 6690/11531 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 82249 event pairs, 3234 based on Foata normal form. 146/8878 useless extension candidates. Maximal degree in co-relation 20265. Up to 6602 conditions per place. [2024-11-17 07:52:46,103 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 131 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2024-11-17 07:52:46,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 177 transitions, 895 flow [2024-11-17 07:52:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2024-11-17 07:52:46,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7043269230769231 [2024-11-17 07:52:46,105 INFO L175 Difference]: Start difference. First operand has 98 places, 126 transitions, 517 flow. Second operand 4 states and 293 transitions. [2024-11-17 07:52:46,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 177 transitions, 895 flow [2024-11-17 07:52:46,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 177 transitions, 858 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:46,115 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 509 flow [2024-11-17 07:52:46,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2024-11-17 07:52:46,117 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2024-11-17 07:52:46,117 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 509 flow [2024-11-17 07:52:46,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2024-11-17 07:52:46,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:46,118 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:46,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:52:46,118 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:46,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1908941212, now seen corresponding path program 1 times [2024-11-17 07:52:46,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:46,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539987944] [2024-11-17 07:52:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:46,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:46,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:46,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539987944] [2024-11-17 07:52:46,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539987944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:46,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:46,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:46,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005508222] [2024-11-17 07:52:46,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:46,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:46,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:52:46,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-17 07:52:46,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 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) [2024-11-17 07:52:46,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:46,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-17 07:52:46,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:48,724 INFO L124 PetriNetUnfolderBase]: 12840/23870 cut-off events. [2024-11-17 07:52:48,728 INFO L125 PetriNetUnfolderBase]: For 2672/2684 co-relation queries the response was YES. [2024-11-17 07:52:48,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42654 conditions, 23870 events. 12840/23870 cut-off events. For 2672/2684 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 211438 event pairs, 7338 based on Foata normal form. 313/18593 useless extension candidates. Maximal degree in co-relation 42518. Up to 8006 conditions per place. [2024-11-17 07:52:49,007 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 133 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2024-11-17 07:52:49,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 185 transitions, 992 flow [2024-11-17 07:52:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:52:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:52:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 421 transitions. [2024-11-17 07:52:49,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782967032967034 [2024-11-17 07:52:49,010 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 509 flow. Second operand 7 states and 421 transitions. [2024-11-17 07:52:49,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 185 transitions, 992 flow [2024-11-17 07:52:49,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 185 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:52:49,020 INFO L231 Difference]: Finished difference. Result has 110 places, 133 transitions, 569 flow [2024-11-17 07:52:49,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=569, PETRI_PLACES=110, PETRI_TRANSITIONS=133} [2024-11-17 07:52:49,021 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 22 predicate places. [2024-11-17 07:52:49,021 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 133 transitions, 569 flow [2024-11-17 07:52:49,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 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) [2024-11-17 07:52:49,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:52:49,022 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:49,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash -952363874, now seen corresponding path program 1 times [2024-11-17 07:52:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526367602] [2024-11-17 07:52:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526367602] [2024-11-17 07:52:49,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526367602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:49,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:49,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:49,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215832034] [2024-11-17 07:52:49,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:49,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:49,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:49,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-17 07:52:49,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 569 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-11-17 07:52:49,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:49,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-17 07:52:49,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:52,557 INFO L124 PetriNetUnfolderBase]: 24642/46124 cut-off events. [2024-11-17 07:52:52,557 INFO L125 PetriNetUnfolderBase]: For 8135/8159 co-relation queries the response was YES. [2024-11-17 07:52:52,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83840 conditions, 46124 events. 24642/46124 cut-off events. For 8135/8159 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 447119 event pairs, 14108 based on Foata normal form. 524/37022 useless extension candidates. Maximal degree in co-relation 83603. Up to 14908 conditions per place. [2024-11-17 07:52:53,096 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 184 selfloop transitions, 5 changer transitions 0/230 dead transitions. [2024-11-17 07:52:53,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 230 transitions, 1323 flow [2024-11-17 07:52:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-17 07:52:53,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6378205128205128 [2024-11-17 07:52:53,098 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 569 flow. Second operand 6 states and 398 transitions. [2024-11-17 07:52:53,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 230 transitions, 1323 flow [2024-11-17 07:52:53,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 230 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:53,115 INFO L231 Difference]: Finished difference. Result has 116 places, 135 transitions, 593 flow [2024-11-17 07:52:53,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=593, PETRI_PLACES=116, PETRI_TRANSITIONS=135} [2024-11-17 07:52:53,118 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2024-11-17 07:52:53,119 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 135 transitions, 593 flow [2024-11-17 07:52:53,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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) [2024-11-17 07:52:53,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:53,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:53,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:52:53,120 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:53,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash -882472744, now seen corresponding path program 1 times [2024-11-17 07:52:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:53,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603920221] [2024-11-17 07:52:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:53,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:53,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603920221] [2024-11-17 07:52:53,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603920221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:53,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314852091] [2024-11-17 07:52:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:53,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:53,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:53,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-17 07:52:53,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 135 transitions, 593 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-17 07:52:53,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:53,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-17 07:52:53,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:57,940 INFO L124 PetriNetUnfolderBase]: 39618/66634 cut-off events. [2024-11-17 07:52:57,940 INFO L125 PetriNetUnfolderBase]: For 7883/8627 co-relation queries the response was YES. [2024-11-17 07:52:58,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125957 conditions, 66634 events. 39618/66634 cut-off events. For 7883/8627 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 580643 event pairs, 19400 based on Foata normal form. 896/56170 useless extension candidates. Maximal degree in co-relation 125724. Up to 38659 conditions per place. [2024-11-17 07:52:58,611 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 137 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2024-11-17 07:52:58,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 188 transitions, 1011 flow [2024-11-17 07:52:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-17 07:52:58,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6995192307692307 [2024-11-17 07:52:58,615 INFO L175 Difference]: Start difference. First operand has 116 places, 135 transitions, 593 flow. Second operand 4 states and 291 transitions. [2024-11-17 07:52:58,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 188 transitions, 1011 flow [2024-11-17 07:52:58,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 188 transitions, 1009 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:58,630 INFO L231 Difference]: Finished difference. Result has 121 places, 138 transitions, 620 flow [2024-11-17 07:52:58,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=121, PETRI_TRANSITIONS=138} [2024-11-17 07:52:58,631 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 33 predicate places. [2024-11-17 07:52:58,631 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 138 transitions, 620 flow [2024-11-17 07:52:58,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-17 07:52:58,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:58,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:58,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:52:58,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:52:58,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1586882347, now seen corresponding path program 1 times [2024-11-17 07:52:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559673202] [2024-11-17 07:52:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:58,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:58,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:58,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:58,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559673202] [2024-11-17 07:52:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559673202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:58,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:58,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:58,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427853965] [2024-11-17 07:52:58,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:58,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:58,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:52:58,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-17 07:52:58,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 138 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 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) [2024-11-17 07:52:58,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:58,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-17 07:52:58,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:09,511 INFO L124 PetriNetUnfolderBase]: 75290/136130 cut-off events. [2024-11-17 07:53:09,511 INFO L125 PetriNetUnfolderBase]: For 26967/27167 co-relation queries the response was YES. [2024-11-17 07:53:10,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263662 conditions, 136130 events. 75290/136130 cut-off events. For 26967/27167 co-relation queries the response was YES. Maximal size of possible extension queue 4793. Compared 1435936 event pairs, 43688 based on Foata normal form. 1344/115042 useless extension candidates. Maximal degree in co-relation 263419. Up to 46392 conditions per place. [2024-11-17 07:53:11,349 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 118 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-11-17 07:53:11,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1004 flow [2024-11-17 07:53:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:53:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:53:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2024-11-17 07:53:11,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673076923076923 [2024-11-17 07:53:11,352 INFO L175 Difference]: Start difference. First operand has 121 places, 138 transitions, 620 flow. Second operand 7 states and 413 transitions. [2024-11-17 07:53:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1004 flow [2024-11-17 07:53:11,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 179 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:11,442 INFO L231 Difference]: Finished difference. Result has 129 places, 140 transitions, 685 flow [2024-11-17 07:53:11,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=685, PETRI_PLACES=129, PETRI_TRANSITIONS=140} [2024-11-17 07:53:11,443 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 41 predicate places. [2024-11-17 07:53:11,443 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 140 transitions, 685 flow [2024-11-17 07:53:11,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 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) [2024-11-17 07:53:11,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:11,444 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-17 07:53:11,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:53:11,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:53:11,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:11,444 INFO L85 PathProgramCache]: Analyzing trace with hash 15167413, now seen corresponding path program 2 times [2024-11-17 07:53:11,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737333149] [2024-11-17 07:53:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:11,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737333149] [2024-11-17 07:53:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737333149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233672343] [2024-11-17 07:53:11,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:53:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:11,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:11,589 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) [2024-11-17 07:53:11,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:53:11,676 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:53:11,676 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:53:11,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:53:11,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:11,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:11,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233672343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:11,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:11,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-17 07:53:11,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954137090] [2024-11-17 07:53:11,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:11,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 07:53:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:11,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 07:53:11,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-17 07:53:11,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-17 07:53:11,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 140 transitions, 685 flow. Second operand has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 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) [2024-11-17 07:53:11,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:11,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-17 07:53:11,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:21,511 INFO L124 PetriNetUnfolderBase]: 66771/125263 cut-off events. [2024-11-17 07:53:21,511 INFO L125 PetriNetUnfolderBase]: For 24050/24194 co-relation queries the response was YES. [2024-11-17 07:53:22,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241480 conditions, 125263 events. 66771/125263 cut-off events. For 24050/24194 co-relation queries the response was YES. Maximal size of possible extension queue 4161. Compared 1350035 event pairs, 40184 based on Foata normal form. 8/107895 useless extension candidates. Maximal degree in co-relation 241096. Up to 80103 conditions per place. [2024-11-17 07:53:22,909 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 54 selfloop transitions, 62 changer transitions 0/160 dead transitions. [2024-11-17 07:53:22,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 160 transitions, 1023 flow [2024-11-17 07:53:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:53:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:53:22,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1122 transitions. [2024-11-17 07:53:22,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4495192307692308 [2024-11-17 07:53:22,915 INFO L175 Difference]: Start difference. First operand has 129 places, 140 transitions, 685 flow. Second operand 24 states and 1122 transitions. [2024-11-17 07:53:22,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 160 transitions, 1023 flow [2024-11-17 07:53:22,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:53:22,981 INFO L231 Difference]: Finished difference. Result has 152 places, 156 transitions, 926 flow [2024-11-17 07:53:22,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=926, PETRI_PLACES=152, PETRI_TRANSITIONS=156} [2024-11-17 07:53:22,982 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 64 predicate places. [2024-11-17 07:53:22,982 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 156 transitions, 926 flow [2024-11-17 07:53:22,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 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) [2024-11-17 07:53:22,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:22,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:22,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:23,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:23,184 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-17 07:53:23,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:23,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1948711782, now seen corresponding path program 1 times [2024-11-17 07:53:23,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:23,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447986052] [2024-11-17 07:53:23,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:23,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447986052] [2024-11-17 07:53:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447986052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:23,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:23,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042647709] [2024-11-17 07:53:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:23,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:53:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:53:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:53:23,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-17 07:53:23,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 156 transitions, 926 flow. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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) [2024-11-17 07:53:23,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:23,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-17 07:53:23,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand