./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-send-receive.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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:14:10,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:14:10,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:14:10,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:14:10,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:14:10,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:14:10,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:14:10,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:14:10,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:14:10,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:14:10,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:14:10,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:14:10,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:14:10,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:14:10,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:14:10,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:14:10,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:14:10,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:14:10,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:14:10,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:14:10,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:14:10,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:14:10,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:14:10,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:14:10,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:14:10,686 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:14:10,686 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:14:10,686 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:14:10,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:14:10,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:14:10,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:14:10,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:14:10,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:14:10,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:14:10,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:10,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:14:10,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:14:10,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:14:10,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:14:10,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:14:10,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:14:10,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:14:10,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:14:10,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:14:10,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2024-11-09 15:14:10,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:14:10,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:14:10,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:14:10,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:14:10,901 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:14:10,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-09 15:14:12,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:14:12,309 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:14:12,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-09 15:14:12,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa07927b/69db8877aba140779570193aa828c0be/FLAG787b41dd2 [2024-11-09 15:14:12,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa07927b/69db8877aba140779570193aa828c0be [2024-11-09 15:14:12,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:14:12,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:14:12,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:12,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:14:12,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:14:12,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:12,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25309f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12, skipping insertion in model container [2024-11-09 15:14:12,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:12,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:14:12,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:12,919 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:14:12,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:14:12,954 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:14:12,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12 WrapperNode [2024-11-09 15:14:12,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:14:12,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:12,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:14:12,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:14:12,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:12,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:12,981 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 160 [2024-11-09 15:14:12,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:14:12,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:14:12,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:14:12,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:14:12,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:12,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:12,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,003 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 15:14:13,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:14:13,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:14:13,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:14:13,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:14:13,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (1/1) ... [2024-11-09 15:14:13,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:14:13,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:13,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:14:13,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:14:13,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:14:13,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 15:14:13,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 15:14:13,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 15:14:13,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 15:14:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 15:14:13,075 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 15:14:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:14:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:14:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:14:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:14:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 15:14:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 15:14:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:14:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:14:13,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:14:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:14:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:14:13,077 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:14:13,156 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:14:13,157 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:14:13,381 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:14:13,381 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:14:13,558 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:14:13,559 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 15:14:13,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:13 BoogieIcfgContainer [2024-11-09 15:14:13,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:14:13,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:14:13,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:14:13,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:14:13,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:14:12" (1/3) ... [2024-11-09 15:14:13,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e6a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:13, skipping insertion in model container [2024-11-09 15:14:13,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:14:12" (2/3) ... [2024-11-09 15:14:13,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e6a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:14:13, skipping insertion in model container [2024-11-09 15:14:13,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:14:13" (3/3) ... [2024-11-09 15:14:13,567 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2024-11-09 15:14:13,580 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:14:13,580 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-09 15:14:13,580 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:14:13,624 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:14:13,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2024-11-09 15:14:13,680 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2024-11-09 15:14:13,683 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:14:13,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 118 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-09 15:14:13,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2024-11-09 15:14:13,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 41 transitions, 94 flow [2024-11-09 15:14:13,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:14:13,701 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;@4a54588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:14:13,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-09 15:14:13,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:14:13,706 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:14:13,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:14:13,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:13,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:14:13,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:13,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash 481343, now seen corresponding path program 1 times [2024-11-09 15:14:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925734943] [2024-11-09 15:14:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925734943] [2024-11-09 15:14:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925734943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:13,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:14:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815602488] [2024-11-09 15:14:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:13,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:13,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:13,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:13,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:13,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:13,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:13,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:14,221 INFO L124 PetriNetUnfolderBase]: 641/1139 cut-off events. [2024-11-09 15:14:14,221 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 15:14:14,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1139 events. 641/1139 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8283 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2142. Up to 994 conditions per place. [2024-11-09 15:14:14,229 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 27 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-11-09 15:14:14,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 160 flow [2024-11-09 15:14:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-09 15:14:14,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 15:14:14,239 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 94 flow. Second operand 4 states and 94 transitions. [2024-11-09 15:14:14,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 160 flow [2024-11-09 15:14:14,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:14:14,245 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 115 flow [2024-11-09 15:14:14,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-09 15:14:14,248 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 0 predicate places. [2024-11-09 15:14:14,248 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 115 flow [2024-11-09 15:14:14,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:14,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:14,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:14:14,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:14:14,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:14,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1455239938, now seen corresponding path program 1 times [2024-11-09 15:14:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:14,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829661703] [2024-11-09 15:14:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:14,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:14,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829661703] [2024-11-09 15:14:14,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829661703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:14,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598380050] [2024-11-09 15:14:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:14,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:14,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:14,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:14,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:14:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:14,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:14,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:14,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598380050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:14,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:14:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524320169] [2024-11-09 15:14:14,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:14,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:14:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:14:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:14:14,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:14,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:14,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:14,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:14,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:14,630 INFO L124 PetriNetUnfolderBase]: 641/1138 cut-off events. [2024-11-09 15:14:14,631 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:14:14,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 1138 events. 641/1138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8346 event pairs, 594 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 2242. Up to 989 conditions per place. [2024-11-09 15:14:14,637 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-09 15:14:14,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 171 flow [2024-11-09 15:14:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:14:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:14:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-09 15:14:14,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42907801418439717 [2024-11-09 15:14:14,641 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 115 flow. Second operand 6 states and 121 transitions. [2024-11-09 15:14:14,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 171 flow [2024-11-09 15:14:14,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:14,643 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2024-11-09 15:14:14,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-09 15:14:14,645 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2024-11-09 15:14:14,645 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2024-11-09 15:14:14,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:14,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:14,647 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:14:14,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:14,851 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 [2024-11-09 15:14:14,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:14,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2132201723, now seen corresponding path program 1 times [2024-11-09 15:14:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727668701] [2024-11-09 15:14:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:14,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727668701] [2024-11-09 15:14:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727668701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442636864] [2024-11-09 15:14:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:14,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:14,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:14,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:14,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:14:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:15,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:14:15,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:15,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:15,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442636864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:15,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:15,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:14:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286505148] [2024-11-09 15:14:15,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:15,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:14:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:14:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:14:15,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:15,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:15,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:15,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:15,233 INFO L124 PetriNetUnfolderBase]: 644/1150 cut-off events. [2024-11-09 15:14:15,234 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 15:14:15,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1150 events. 644/1150 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8318 event pairs, 594 based on Foata normal form. 3/701 useless extension candidates. Maximal degree in co-relation 2243. Up to 996 conditions per place. [2024-11-09 15:14:15,239 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 26 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-11-09 15:14:15,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 254 flow [2024-11-09 15:14:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:14:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:14:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-09 15:14:15,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4085106382978723 [2024-11-09 15:14:15,241 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 10 states and 192 transitions. [2024-11-09 15:14:15,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 254 flow [2024-11-09 15:14:15,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:15,242 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-09 15:14:15,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-09 15:14:15,243 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-09 15:14:15,243 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-09 15:14:15,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 12 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:15,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:15,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:14:15,444 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 [2024-11-09 15:14:15,445 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:15,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2058279086, now seen corresponding path program 1 times [2024-11-09 15:14:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441465819] [2024-11-09 15:14:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:15,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:15,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:15,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441465819] [2024-11-09 15:14:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441465819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:15,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:15,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:14:15,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148913181] [2024-11-09 15:14:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:15,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:14:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:14:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:14:15,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:15,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:15,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:15,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:15,627 INFO L124 PetriNetUnfolderBase]: 921/1501 cut-off events. [2024-11-09 15:14:15,628 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-09 15:14:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1501 events. 921/1501 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7857 event pairs, 301 based on Foata normal form. 48/989 useless extension candidates. Maximal degree in co-relation 2942. Up to 1026 conditions per place. [2024-11-09 15:14:15,635 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 48 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2024-11-09 15:14:15,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 309 flow [2024-11-09 15:14:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:14:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:14:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-09 15:14:15,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-11-09 15:14:15,636 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 95 transitions. [2024-11-09 15:14:15,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 309 flow [2024-11-09 15:14:15,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 298 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:15,639 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 188 flow [2024-11-09 15:14:15,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-09 15:14:15,640 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2024-11-09 15:14:15,640 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 188 flow [2024-11-09 15:14:15,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:15,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:15,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:14:15,641 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:15,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash -80674940, now seen corresponding path program 1 times [2024-11-09 15:14:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:15,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887790260] [2024-11-09 15:14:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:15,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:15,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887790260] [2024-11-09 15:14:15,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887790260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:15,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:15,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:14:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594764004] [2024-11-09 15:14:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:15,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:14:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:14:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:14:15,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:15,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:15,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:15,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:15,814 INFO L124 PetriNetUnfolderBase]: 681/1097 cut-off events. [2024-11-09 15:14:15,814 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-09 15:14:15,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1097 events. 681/1097 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5431 event pairs, 436 based on Foata normal form. 0/804 useless extension candidates. Maximal degree in co-relation 2531. Up to 970 conditions per place. [2024-11-09 15:14:15,819 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2024-11-09 15:14:15,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 260 flow [2024-11-09 15:14:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:14:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:14:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-09 15:14:15,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-11-09 15:14:15,821 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 188 flow. Second operand 3 states and 77 transitions. [2024-11-09 15:14:15,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 260 flow [2024-11-09 15:14:15,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:15,823 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 183 flow [2024-11-09 15:14:15,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-09 15:14:15,823 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2024-11-09 15:14:15,823 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 183 flow [2024-11-09 15:14:15,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:15,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:15,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:14:15,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:15,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash -80674939, now seen corresponding path program 1 times [2024-11-09 15:14:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972070363] [2024-11-09 15:14:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:15,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972070363] [2024-11-09 15:14:15,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972070363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222964233] [2024-11-09 15:14:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:15,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:15,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:15,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:15,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:15,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:15,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:15,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:16,019 INFO L124 PetriNetUnfolderBase]: 732/1212 cut-off events. [2024-11-09 15:14:16,020 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-09 15:14:16,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 1212 events. 732/1212 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6163 event pairs, 488 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 2756. Up to 968 conditions per place. [2024-11-09 15:14:16,025 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 35 selfloop transitions, 2 changer transitions 12/62 dead transitions. [2024-11-09 15:14:16,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 309 flow [2024-11-09 15:14:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-09 15:14:16,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-11-09 15:14:16,026 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 183 flow. Second operand 4 states and 107 transitions. [2024-11-09 15:14:16,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 309 flow [2024-11-09 15:14:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:16,028 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 185 flow [2024-11-09 15:14:16,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-09 15:14:16,029 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2024-11-09 15:14:16,029 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 185 flow [2024-11-09 15:14:16,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:16,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:16,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:16,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:14:16,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:16,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2140607330, now seen corresponding path program 1 times [2024-11-09 15:14:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95390440] [2024-11-09 15:14:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:16,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:16,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95390440] [2024-11-09 15:14:16,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95390440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:16,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843962918] [2024-11-09 15:14:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:16,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:16,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:16,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:14:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:16,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:16,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:16,212 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843962918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:16,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:16,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-09 15:14:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827992487] [2024-11-09 15:14:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:16,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:14:16,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:16,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:16,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:16,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:16,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:16,297 INFO L124 PetriNetUnfolderBase]: 380/698 cut-off events. [2024-11-09 15:14:16,297 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-09 15:14:16,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 698 events. 380/698 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3447 event pairs, 148 based on Foata normal form. 92/643 useless extension candidates. Maximal degree in co-relation 1568. Up to 399 conditions per place. [2024-11-09 15:14:16,299 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 33 selfloop transitions, 6 changer transitions 4/56 dead transitions. [2024-11-09 15:14:16,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 290 flow [2024-11-09 15:14:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:16,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-09 15:14:16,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-11-09 15:14:16,301 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 185 flow. Second operand 4 states and 102 transitions. [2024-11-09 15:14:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 290 flow [2024-11-09 15:14:16,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 284 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 15:14:16,302 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 178 flow [2024-11-09 15:14:16,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-09 15:14:16,303 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-11-09 15:14:16,303 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 178 flow [2024-11-09 15:14:16,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:16,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:16,303 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-09 15:14:16,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:14:16,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:16,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:16,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1730512680, now seen corresponding path program 2 times [2024-11-09 15:14:16,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702115560] [2024-11-09 15:14:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702115560] [2024-11-09 15:14:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702115560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:16,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901370172] [2024-11-09 15:14:16,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:16,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:16,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:16,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:14:16,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:14:16,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:16,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:14:16,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:14:16,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 15:14:16,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901370172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:16,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:16,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-09 15:14:16,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092443629] [2024-11-09 15:14:16,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:16,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 15:14:16,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:16,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 15:14:16,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:14:16,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:16,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:16,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:16,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:16,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:16,936 INFO L124 PetriNetUnfolderBase]: 240/417 cut-off events. [2024-11-09 15:14:16,937 INFO L125 PetriNetUnfolderBase]: For 215/215 co-relation queries the response was YES. [2024-11-09 15:14:16,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 417 events. 240/417 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1559 event pairs, 127 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1087. Up to 339 conditions per place. [2024-11-09 15:14:16,939 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 17 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-11-09 15:14:16,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 47 transitions, 254 flow [2024-11-09 15:14:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 15:14:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 15:14:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 245 transitions. [2024-11-09 15:14:16,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3723404255319149 [2024-11-09 15:14:16,940 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 178 flow. Second operand 14 states and 245 transitions. [2024-11-09 15:14:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 47 transitions, 254 flow [2024-11-09 15:14:16,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 47 transitions, 230 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-09 15:14:16,941 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 196 flow [2024-11-09 15:14:16,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=196, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-09 15:14:16,941 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2024-11-09 15:14:16,942 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 196 flow [2024-11-09 15:14:16,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:16,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:16,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:16,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:14:17,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:17,143 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:17,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1814298192, now seen corresponding path program 1 times [2024-11-09 15:14:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805810917] [2024-11-09 15:14:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805810917] [2024-11-09 15:14:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805810917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76299164] [2024-11-09 15:14:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:17,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:17,452 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:17,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:14:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:17,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 15:14:17,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:17,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:17,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:18,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-09 15:14:18,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-09 15:14:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76299164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:18,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-09 15:14:18,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407286465] [2024-11-09 15:14:18,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:18,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:14:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:14:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:14:18,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:18,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 196 flow. Second operand has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:18,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:18,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:18,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:19,617 INFO L124 PetriNetUnfolderBase]: 852/1745 cut-off events. [2024-11-09 15:14:19,618 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-11-09 15:14:19,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1745 events. 852/1745 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10914 event pairs, 111 based on Foata normal form. 54/1399 useless extension candidates. Maximal degree in co-relation 3780. Up to 565 conditions per place. [2024-11-09 15:14:19,624 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 121 selfloop transitions, 40 changer transitions 5/178 dead transitions. [2024-11-09 15:14:19,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 178 transitions, 898 flow [2024-11-09 15:14:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 15:14:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 15:14:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 528 transitions. [2024-11-09 15:14:19,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4884366327474561 [2024-11-09 15:14:19,627 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 196 flow. Second operand 23 states and 528 transitions. [2024-11-09 15:14:19,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 178 transitions, 898 flow [2024-11-09 15:14:19,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 178 transitions, 830 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-09 15:14:19,629 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 462 flow [2024-11-09 15:14:19,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=462, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-11-09 15:14:19,631 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2024-11-09 15:14:19,631 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 462 flow [2024-11-09 15:14:19,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.833333333333332) internal successors, (303), 18 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:19,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:19,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:19,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:14:19,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:19,833 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:19,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash -268535991, now seen corresponding path program 1 times [2024-11-09 15:14:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:19,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161180970] [2024-11-09 15:14:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:19,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:19,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161180970] [2024-11-09 15:14:19,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161180970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:19,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:19,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:14:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907411574] [2024-11-09 15:14:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:19,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:14:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:14:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:14:19,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:19,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:19,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:19,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:19,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:20,007 INFO L124 PetriNetUnfolderBase]: 894/1554 cut-off events. [2024-11-09 15:14:20,007 INFO L125 PetriNetUnfolderBase]: For 13143/13143 co-relation queries the response was YES. [2024-11-09 15:14:20,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 1554 events. 894/1554 cut-off events. For 13143/13143 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8795 event pairs, 321 based on Foata normal form. 18/1501 useless extension candidates. Maximal degree in co-relation 6140. Up to 1126 conditions per place. [2024-11-09 15:14:20,042 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 66 selfloop transitions, 2 changer transitions 1/79 dead transitions. [2024-11-09 15:14:20,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 628 flow [2024-11-09 15:14:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:14:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:14:20,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-09 15:14:20,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-11-09 15:14:20,043 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 462 flow. Second operand 3 states and 78 transitions. [2024-11-09 15:14:20,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 628 flow [2024-11-09 15:14:20,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 566 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-11-09 15:14:20,060 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 344 flow [2024-11-09 15:14:20,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-09 15:14:20,060 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2024-11-09 15:14:20,061 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 344 flow [2024-11-09 15:14:20,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:20,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:20,061 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:20,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 15:14:20,061 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:20,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361159, now seen corresponding path program 1 times [2024-11-09 15:14:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:20,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350183535] [2024-11-09 15:14:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:20,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:20,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350183535] [2024-11-09 15:14:20,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350183535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:20,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167346130] [2024-11-09 15:14:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:20,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:20,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:20,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:20,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:14:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:20,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 15:14:20,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:20,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:21,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:14:21,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-09 15:14:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:14:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167346130] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:21,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 15:14:21,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10, 6] total 18 [2024-11-09 15:14:21,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201035885] [2024-11-09 15:14:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:21,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-09 15:14:21,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:21,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:21,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:21,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:21,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:21,190 INFO L124 PetriNetUnfolderBase]: 594/1218 cut-off events. [2024-11-09 15:14:21,190 INFO L125 PetriNetUnfolderBase]: For 5654/5654 co-relation queries the response was YES. [2024-11-09 15:14:21,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4048 conditions, 1218 events. 594/1218 cut-off events. For 5654/5654 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6976 event pairs, 69 based on Foata normal form. 48/1245 useless extension candidates. Maximal degree in co-relation 4025. Up to 409 conditions per place. [2024-11-09 15:14:21,198 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 60 selfloop transitions, 9 changer transitions 1/83 dead transitions. [2024-11-09 15:14:21,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 556 flow [2024-11-09 15:14:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-09 15:14:21,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-11-09 15:14:21,199 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 344 flow. Second operand 4 states and 105 transitions. [2024-11-09 15:14:21,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 556 flow [2024-11-09 15:14:21,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:21,205 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 374 flow [2024-11-09 15:14:21,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-11-09 15:14:21,206 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-11-09 15:14:21,206 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 374 flow [2024-11-09 15:14:21,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:21,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:21,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:21,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:21,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:21,410 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:21,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1348424623, now seen corresponding path program 1 times [2024-11-09 15:14:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641634768] [2024-11-09 15:14:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:21,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641634768] [2024-11-09 15:14:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641634768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508852827] [2024-11-09 15:14:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:21,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:21,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:14:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:21,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:14:21,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 15:14:21,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:21,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508852827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:21,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:21,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2024-11-09 15:14:21,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506204887] [2024-11-09 15:14:21,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:21,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:21,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:21,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:21,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:14:21,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:21,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:21,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:21,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:21,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:21,723 INFO L124 PetriNetUnfolderBase]: 852/1692 cut-off events. [2024-11-09 15:14:21,724 INFO L125 PetriNetUnfolderBase]: For 10766/10766 co-relation queries the response was YES. [2024-11-09 15:14:21,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 1692 events. 852/1692 cut-off events. For 10766/10766 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10270 event pairs, 159 based on Foata normal form. 66/1726 useless extension candidates. Maximal degree in co-relation 6238. Up to 631 conditions per place. [2024-11-09 15:14:21,760 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 62 selfloop transitions, 18 changer transitions 1/94 dead transitions. [2024-11-09 15:14:21,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 727 flow [2024-11-09 15:14:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-09 15:14:21,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-11-09 15:14:21,761 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 374 flow. Second operand 4 states and 109 transitions. [2024-11-09 15:14:21,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 727 flow [2024-11-09 15:14:21,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 712 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:21,771 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 542 flow [2024-11-09 15:14:21,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-11-09 15:14:21,772 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2024-11-09 15:14:21,772 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 542 flow [2024-11-09 15:14:21,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:21,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:21,773 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:21,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 15:14:21,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:21,975 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:21,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:21,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1850361158, now seen corresponding path program 2 times [2024-11-09 15:14:21,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:21,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695183444] [2024-11-09 15:14:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:21,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:22,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:22,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695183444] [2024-11-09 15:14:22,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695183444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:22,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532826961] [2024-11-09 15:14:22,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:22,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:22,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:22,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:22,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:14:22,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:14:22,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:22,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:14:22,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:14:22,709 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:14:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532826961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:22,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:14:22,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-11-09 15:14:22,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326951174] [2024-11-09 15:14:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:22,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:22,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-09 15:14:22,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-09 15:14:22,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:22,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:22,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-09 15:14:22,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:22,874 INFO L124 PetriNetUnfolderBase]: 804/1698 cut-off events. [2024-11-09 15:14:22,874 INFO L125 PetriNetUnfolderBase]: For 9507/9507 co-relation queries the response was YES. [2024-11-09 15:14:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 1698 events. 804/1698 cut-off events. For 9507/9507 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10719 event pairs, 81 based on Foata normal form. 36/1713 useless extension candidates. Maximal degree in co-relation 6420. Up to 787 conditions per place. [2024-11-09 15:14:22,890 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 72 selfloop transitions, 10 changer transitions 1/96 dead transitions. [2024-11-09 15:14:22,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 791 flow [2024-11-09 15:14:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-09 15:14:22,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-11-09 15:14:22,891 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 542 flow. Second operand 4 states and 104 transitions. [2024-11-09 15:14:22,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 791 flow [2024-11-09 15:14:22,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 96 transitions, 775 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 15:14:22,904 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 526 flow [2024-11-09 15:14:22,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=526, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-11-09 15:14:22,905 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2024-11-09 15:14:22,905 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 526 flow [2024-11-09 15:14:22,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:22,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:22,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:22,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:14:23,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 15:14:23,106 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:23,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:23,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1123608725, now seen corresponding path program 1 times [2024-11-09 15:14:23,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:23,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584509716] [2024-11-09 15:14:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584509716] [2024-11-09 15:14:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584509716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426384449] [2024-11-09 15:14:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:23,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:23,219 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:23,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:14:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:23,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:14:23,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:23,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426384449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:23,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:23,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-09 15:14:23,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938099044] [2024-11-09 15:14:23,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:23,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:14:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:23,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:14:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:14:23,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:23,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 526 flow. Second operand has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:23,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:23,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:23,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:23,657 INFO L124 PetriNetUnfolderBase]: 558/1111 cut-off events. [2024-11-09 15:14:23,657 INFO L125 PetriNetUnfolderBase]: For 6899/6899 co-relation queries the response was YES. [2024-11-09 15:14:23,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 1111 events. 558/1111 cut-off events. For 6899/6899 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6196 event pairs, 333 based on Foata normal form. 12/1072 useless extension candidates. Maximal degree in co-relation 4499. Up to 772 conditions per place. [2024-11-09 15:14:23,664 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 33 selfloop transitions, 12 changer transitions 22/80 dead transitions. [2024-11-09 15:14:23,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 571 flow [2024-11-09 15:14:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:14:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:14:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-11-09 15:14:23,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42789598108747046 [2024-11-09 15:14:23,665 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 526 flow. Second operand 9 states and 181 transitions. [2024-11-09 15:14:23,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 571 flow [2024-11-09 15:14:23,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 530 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-11-09 15:14:23,675 INFO L231 Difference]: Finished difference. Result has 78 places, 58 transitions, 336 flow [2024-11-09 15:14:23,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=336, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2024-11-09 15:14:23,675 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-11-09 15:14:23,675 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 336 flow [2024-11-09 15:14:23,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.555555555555557) internal successors, (298), 18 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:23,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:23,675 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:23,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:23,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 15:14:23,880 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:23,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1834377532, now seen corresponding path program 2 times [2024-11-09 15:14:23,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:23,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031936252] [2024-11-09 15:14:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:23,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:23,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031936252] [2024-11-09 15:14:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031936252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:14:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:14:23,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 15:14:23,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909411067] [2024-11-09 15:14:23,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:14:23,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:14:23,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:23,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:14:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:14:23,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-11-09 15:14:23,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:23,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:23,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-11-09 15:14:23,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:24,131 INFO L124 PetriNetUnfolderBase]: 1211/2063 cut-off events. [2024-11-09 15:14:24,132 INFO L125 PetriNetUnfolderBase]: For 9538/9538 co-relation queries the response was YES. [2024-11-09 15:14:24,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8093 conditions, 2063 events. 1211/2063 cut-off events. For 9538/9538 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11407 event pairs, 188 based on Foata normal form. 120/2179 useless extension candidates. Maximal degree in co-relation 8070. Up to 942 conditions per place. [2024-11-09 15:14:24,144 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 64 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-09 15:14:24,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 607 flow [2024-11-09 15:14:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:14:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:14:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-11-09 15:14:24,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 15:14:24,145 INFO L175 Difference]: Start difference. First operand has 78 places, 58 transitions, 336 flow. Second operand 4 states and 94 transitions. [2024-11-09 15:14:24,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 607 flow [2024-11-09 15:14:24,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 569 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-09 15:14:24,149 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 327 flow [2024-11-09 15:14:24,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-11-09 15:14:24,150 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 21 predicate places. [2024-11-09 15:14:24,150 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 327 flow [2024-11-09 15:14:24,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:24,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:24,150 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:24,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 15:14:24,150 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:24,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash -219267832, now seen corresponding path program 1 times [2024-11-09 15:14:24,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:24,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477016576] [2024-11-09 15:14:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:24,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:24,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477016576] [2024-11-09 15:14:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477016576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:24,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674577015] [2024-11-09 15:14:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:24,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:24,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:24,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:24,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:14:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:24,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 15:14:24,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:25,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:25,230 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-09 15:14:25,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 43 [2024-11-09 15:14:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674577015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:25,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2024-11-09 15:14:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975691868] [2024-11-09 15:14:25,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:25,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 15:14:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 15:14:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2024-11-09 15:14:25,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:25,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 327 flow. Second operand has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:25,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:27,216 INFO L124 PetriNetUnfolderBase]: 2279/4549 cut-off events. [2024-11-09 15:14:27,216 INFO L125 PetriNetUnfolderBase]: For 19932/19932 co-relation queries the response was YES. [2024-11-09 15:14:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16426 conditions, 4549 events. 2279/4549 cut-off events. For 19932/19932 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 32967 event pairs, 164 based on Foata normal form. 168/4705 useless extension candidates. Maximal degree in co-relation 16405. Up to 1495 conditions per place. [2024-11-09 15:14:27,241 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 186 selfloop transitions, 80 changer transitions 5/285 dead transitions. [2024-11-09 15:14:27,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 285 transitions, 2037 flow [2024-11-09 15:14:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 15:14:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 15:14:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 759 transitions. [2024-11-09 15:14:27,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47496871088861076 [2024-11-09 15:14:27,243 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 327 flow. Second operand 34 states and 759 transitions. [2024-11-09 15:14:27,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 285 transitions, 2037 flow [2024-11-09 15:14:27,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 285 transitions, 2031 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:14:27,250 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 1373 flow [2024-11-09 15:14:27,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1373, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-11-09 15:14:27,251 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 67 predicate places. [2024-11-09 15:14:27,251 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 1373 flow [2024-11-09 15:14:27,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.5) internal successors, (528), 32 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:27,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:27,252 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:27,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 15:14:27,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 15:14:27,456 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:27,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 257360822, now seen corresponding path program 1 times [2024-11-09 15:14:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983785517] [2024-11-09 15:14:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:28,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:28,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983785517] [2024-11-09 15:14:28,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983785517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307939601] [2024-11-09 15:14:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:28,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:28,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:28,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:28,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 15:14:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:28,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 15:14:28,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:14:28,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:28,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:14:28,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-09 15:14:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:14:28,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307939601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:28,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:28,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 4] total 24 [2024-11-09 15:14:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300096479] [2024-11-09 15:14:28,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:28,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 15:14:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:28,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 15:14:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2024-11-09 15:14:28,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:28,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 1373 flow. Second operand has 26 states, 26 states have (on average 16.923076923076923) internal successors, (440), 26 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:28,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:28,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:28,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:30,046 INFO L124 PetriNetUnfolderBase]: 3095/6275 cut-off events. [2024-11-09 15:14:30,046 INFO L125 PetriNetUnfolderBase]: For 68538/68538 co-relation queries the response was YES. [2024-11-09 15:14:30,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29327 conditions, 6275 events. 3095/6275 cut-off events. For 68538/68538 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 48821 event pairs, 153 based on Foata normal form. 318/6575 useless extension candidates. Maximal degree in co-relation 29291. Up to 2023 conditions per place. [2024-11-09 15:14:30,090 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 188 selfloop transitions, 76 changer transitions 6/284 dead transitions. [2024-11-09 15:14:30,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 284 transitions, 3014 flow [2024-11-09 15:14:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 15:14:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 15:14:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 545 transitions. [2024-11-09 15:14:30,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46382978723404256 [2024-11-09 15:14:30,092 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 1373 flow. Second operand 25 states and 545 transitions. [2024-11-09 15:14:30,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 284 transitions, 3014 flow [2024-11-09 15:14:30,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 284 transitions, 2685 flow, removed 159 selfloop flow, removed 5 redundant places. [2024-11-09 15:14:30,130 INFO L231 Difference]: Finished difference. Result has 144 places, 166 transitions, 1693 flow [2024-11-09 15:14:30,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1693, PETRI_PLACES=144, PETRI_TRANSITIONS=166} [2024-11-09 15:14:30,131 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 97 predicate places. [2024-11-09 15:14:30,131 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 166 transitions, 1693 flow [2024-11-09 15:14:30,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.923076923076923) internal successors, (440), 26 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:30,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:30,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:30,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 15:14:30,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:14:30,332 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:30,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash -997958886, now seen corresponding path program 2 times [2024-11-09 15:14:30,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:30,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122458186] [2024-11-09 15:14:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:30,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:30,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122458186] [2024-11-09 15:14:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122458186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343279729] [2024-11-09 15:14:30,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:30,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:30,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:30,827 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:30,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 15:14:30,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:14:30,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:30,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 15:14:30,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:30,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:14:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:31,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:31,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2024-11-09 15:14:31,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:14:31,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-11-09 15:14:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:32,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343279729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:32,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:32,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2024-11-09 15:14:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310349034] [2024-11-09 15:14:32,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:32,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 15:14:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 15:14:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 15:14:32,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:32,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 166 transitions, 1693 flow. Second operand has 35 states, 35 states have (on average 16.37142857142857) internal successors, (573), 35 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:32,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:32,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:32,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:35,384 INFO L124 PetriNetUnfolderBase]: 5328/10509 cut-off events. [2024-11-09 15:14:35,385 INFO L125 PetriNetUnfolderBase]: For 152916/152916 co-relation queries the response was YES. [2024-11-09 15:14:35,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53281 conditions, 10509 events. 5328/10509 cut-off events. For 152916/152916 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 86349 event pairs, 401 based on Foata normal form. 372/10843 useless extension candidates. Maximal degree in co-relation 53233. Up to 2773 conditions per place. [2024-11-09 15:14:35,478 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 252 selfloop transitions, 196 changer transitions 6/468 dead transitions. [2024-11-09 15:14:35,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 468 transitions, 5427 flow [2024-11-09 15:14:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 15:14:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-09 15:14:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 877 transitions. [2024-11-09 15:14:35,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4664893617021277 [2024-11-09 15:14:35,481 INFO L175 Difference]: Start difference. First operand has 144 places, 166 transitions, 1693 flow. Second operand 40 states and 877 transitions. [2024-11-09 15:14:35,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 468 transitions, 5427 flow [2024-11-09 15:14:35,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 468 transitions, 5271 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-11-09 15:14:35,710 INFO L231 Difference]: Finished difference. Result has 191 places, 296 transitions, 4447 flow [2024-11-09 15:14:35,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4447, PETRI_PLACES=191, PETRI_TRANSITIONS=296} [2024-11-09 15:14:35,710 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 144 predicate places. [2024-11-09 15:14:35,710 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 296 transitions, 4447 flow [2024-11-09 15:14:35,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.37142857142857) internal successors, (573), 35 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:35,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:35,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:35,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 15:14:35,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 15:14:35,916 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:35,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:35,916 INFO L85 PathProgramCache]: Analyzing trace with hash -997958887, now seen corresponding path program 2 times [2024-11-09 15:14:35,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:35,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355772258] [2024-11-09 15:14:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:35,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:36,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355772258] [2024-11-09 15:14:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355772258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:36,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798417610] [2024-11-09 15:14:36,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:14:36,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:36,522 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:36,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 15:14:36,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:14:36,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:36,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 15:14:36,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:36,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 15:14:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:36,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:37,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2024-11-09 15:14:37,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:14:37,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2024-11-09 15:14:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798417610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:38,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:38,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-09 15:14:38,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838274536] [2024-11-09 15:14:38,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:38,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 15:14:38,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 15:14:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 15:14:38,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:38,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 296 transitions, 4447 flow. Second operand has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:38,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:38,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:38,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:40,907 INFO L124 PetriNetUnfolderBase]: 5454/10815 cut-off events. [2024-11-09 15:14:40,907 INFO L125 PetriNetUnfolderBase]: For 253720/253720 co-relation queries the response was YES. [2024-11-09 15:14:40,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62523 conditions, 10815 events. 5454/10815 cut-off events. For 253720/253720 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 89264 event pairs, 377 based on Foata normal form. 342/11116 useless extension candidates. Maximal degree in co-relation 62457. Up to 4272 conditions per place. [2024-11-09 15:14:41,008 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 105 changer transitions 7/458 dead transitions. [2024-11-09 15:14:41,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 458 transitions, 6573 flow [2024-11-09 15:14:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 15:14:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-09 15:14:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 692 transitions. [2024-11-09 15:14:41,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2024-11-09 15:14:41,009 INFO L175 Difference]: Start difference. First operand has 191 places, 296 transitions, 4447 flow. Second operand 32 states and 692 transitions. [2024-11-09 15:14:41,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 458 transitions, 6573 flow [2024-11-09 15:14:41,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 458 transitions, 5327 flow, removed 597 selfloop flow, removed 16 redundant places. [2024-11-09 15:14:41,751 INFO L231 Difference]: Finished difference. Result has 215 places, 305 transitions, 4113 flow [2024-11-09 15:14:41,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3507, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4113, PETRI_PLACES=215, PETRI_TRANSITIONS=305} [2024-11-09 15:14:41,752 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2024-11-09 15:14:41,752 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 305 transitions, 4113 flow [2024-11-09 15:14:41,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.454545454545453) internal successors, (543), 33 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:41,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:41,753 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:41,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 15:14:41,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:41,953 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:41,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 507440421, now seen corresponding path program 3 times [2024-11-09 15:14:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622666956] [2024-11-09 15:14:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:42,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622666956] [2024-11-09 15:14:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622666956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175764565] [2024-11-09 15:14:42,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:14:42,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:42,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:42,777 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:42,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 15:14:42,838 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 15:14:42,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:42,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 15:14:42,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:14:42,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:43,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 15:14:43,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-09 15:14:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:14:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175764565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:43,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:43,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 20 [2024-11-09 15:14:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116841774] [2024-11-09 15:14:43,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:43,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 15:14:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 15:14:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-09 15:14:43,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:43,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 305 transitions, 4113 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:43,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:43,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:43,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:45,616 INFO L124 PetriNetUnfolderBase]: 5256/10489 cut-off events. [2024-11-09 15:14:45,616 INFO L125 PetriNetUnfolderBase]: For 157980/157980 co-relation queries the response was YES. [2024-11-09 15:14:45,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52025 conditions, 10489 events. 5256/10489 cut-off events. For 157980/157980 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 86139 event pairs, 377 based on Foata normal form. 108/10571 useless extension candidates. Maximal degree in co-relation 51953. Up to 4585 conditions per place. [2024-11-09 15:14:45,748 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 299 selfloop transitions, 110 changer transitions 8/431 dead transitions. [2024-11-09 15:14:45,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 431 transitions, 5472 flow [2024-11-09 15:14:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 15:14:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 15:14:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 576 transitions. [2024-11-09 15:14:45,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-11-09 15:14:45,750 INFO L175 Difference]: Start difference. First operand has 215 places, 305 transitions, 4113 flow. Second operand 27 states and 576 transitions. [2024-11-09 15:14:45,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 431 transitions, 5472 flow [2024-11-09 15:14:46,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 431 transitions, 5140 flow, removed 81 selfloop flow, removed 24 redundant places. [2024-11-09 15:14:46,423 INFO L231 Difference]: Finished difference. Result has 219 places, 304 transitions, 3986 flow [2024-11-09 15:14:46,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3986, PETRI_PLACES=219, PETRI_TRANSITIONS=304} [2024-11-09 15:14:46,424 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 172 predicate places. [2024-11-09 15:14:46,424 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 304 transitions, 3986 flow [2024-11-09 15:14:46,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:46,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:46,424 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:46,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:46,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:46,625 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:46,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash 815974286, now seen corresponding path program 4 times [2024-11-09 15:14:46,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:46,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066258559] [2024-11-09 15:14:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:46,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:14:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066258559] [2024-11-09 15:14:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066258559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049948269] [2024-11-09 15:14:46,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 15:14:46,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:46,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:46,777 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:46,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 15:14:46,845 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 15:14:46,845 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:46,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 15:14:46,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 15:14:46,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 15:14:47,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049948269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:47,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:47,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 5] total 16 [2024-11-09 15:14:47,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455598035] [2024-11-09 15:14:47,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:47,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:14:47,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:47,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:14:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:14:47,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:47,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 304 transitions, 3986 flow. Second operand has 18 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:47,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:47,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:47,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:14:48,280 INFO L124 PetriNetUnfolderBase]: 3654/8305 cut-off events. [2024-11-09 15:14:48,280 INFO L125 PetriNetUnfolderBase]: For 126596/126596 co-relation queries the response was YES. [2024-11-09 15:14:48,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34533 conditions, 8305 events. 3654/8305 cut-off events. For 126596/126596 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 73848 event pairs, 389 based on Foata normal form. 1296/9555 useless extension candidates. Maximal degree in co-relation 34467. Up to 1273 conditions per place. [2024-11-09 15:14:48,349 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 64 changer transitions 162/315 dead transitions. [2024-11-09 15:14:48,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 315 transitions, 3641 flow [2024-11-09 15:14:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:14:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:14:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 473 transitions. [2024-11-09 15:14:48,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47922998986828774 [2024-11-09 15:14:48,351 INFO L175 Difference]: Start difference. First operand has 219 places, 304 transitions, 3986 flow. Second operand 21 states and 473 transitions. [2024-11-09 15:14:48,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 315 transitions, 3641 flow [2024-11-09 15:14:48,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 315 transitions, 3176 flow, removed 83 selfloop flow, removed 42 redundant places. [2024-11-09 15:14:48,600 INFO L231 Difference]: Finished difference. Result has 198 places, 129 transitions, 1521 flow [2024-11-09 15:14:48,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1521, PETRI_PLACES=198, PETRI_TRANSITIONS=129} [2024-11-09 15:14:48,601 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 151 predicate places. [2024-11-09 15:14:48,601 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 129 transitions, 1521 flow [2024-11-09 15:14:48,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.555555555555557) internal successors, (316), 18 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:48,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:14:48,601 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:14:48,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 15:14:48,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:48,802 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:14:48,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:14:48,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1267789669, now seen corresponding path program 5 times [2024-11-09 15:14:48,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:14:48,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967579359] [2024-11-09 15:14:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:14:48,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:14:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:14:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:49,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:14:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967579359] [2024-11-09 15:14:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967579359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:14:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101578481] [2024-11-09 15:14:49,372 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 15:14:49,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:14:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:14:49,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:14:49,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 15:14:49,446 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 15:14:49,447 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:14:49,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 15:14:49,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:14:49,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:14:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:50,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:14:50,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2024-11-09 15:14:50,963 INFO L349 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2024-11-09 15:14:50,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 287 [2024-11-09 15:14:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:14:54,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101578481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:14:54,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:14:54,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 44 [2024-11-09 15:14:54,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280531020] [2024-11-09 15:14:54,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:14:54,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 15:14:54,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:14:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 15:14:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1800, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 15:14:55,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:14:55,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 129 transitions, 1521 flow. Second operand has 46 states, 46 states have (on average 16.369565217391305) internal successors, (753), 46 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:14:55,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:14:55,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:14:55,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:00,884 INFO L124 PetriNetUnfolderBase]: 5861/11810 cut-off events. [2024-11-09 15:15:00,885 INFO L125 PetriNetUnfolderBase]: For 182632/182632 co-relation queries the response was YES. [2024-11-09 15:15:00,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59718 conditions, 11810 events. 5861/11810 cut-off events. For 182632/182632 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 101225 event pairs, 358 based on Foata normal form. 348/12141 useless extension candidates. Maximal degree in co-relation 59665. Up to 3379 conditions per place. [2024-11-09 15:15:00,993 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 414 selfloop transitions, 218 changer transitions 16/662 dead transitions. [2024-11-09 15:15:00,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 662 transitions, 7527 flow [2024-11-09 15:15:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-09 15:15:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-09 15:15:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 1563 transitions. [2024-11-09 15:15:00,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47507598784194527 [2024-11-09 15:15:00,996 INFO L175 Difference]: Start difference. First operand has 198 places, 129 transitions, 1521 flow. Second operand 70 states and 1563 transitions. [2024-11-09 15:15:00,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 662 transitions, 7527 flow [2024-11-09 15:15:01,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 662 transitions, 6873 flow, removed 297 selfloop flow, removed 22 redundant places. [2024-11-09 15:15:01,539 INFO L231 Difference]: Finished difference. Result has 233 places, 316 transitions, 5207 flow [2024-11-09 15:15:01,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=5207, PETRI_PLACES=233, PETRI_TRANSITIONS=316} [2024-11-09 15:15:01,539 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 186 predicate places. [2024-11-09 15:15:01,540 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 316 transitions, 5207 flow [2024-11-09 15:15:01,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 16.369565217391305) internal successors, (753), 46 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:01,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:01,540 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:01,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:01,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 15:15:01,741 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:15:01,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1331895836, now seen corresponding path program 3 times [2024-11-09 15:15:01,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080894358] [2024-11-09 15:15:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080894358] [2024-11-09 15:15:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080894358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828172450] [2024-11-09 15:15:02,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:15:02,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:02,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:02,177 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:02,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 15:15:02,250 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 15:15:02,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:02,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 15:15:02,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:15:02,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:02,409 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 15:15:02,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 15:15:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:15:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828172450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:02,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:02,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 6] total 24 [2024-11-09 15:15:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128992578] [2024-11-09 15:15:02,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:02,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 15:15:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:02,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 15:15:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2024-11-09 15:15:02,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:15:02,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 316 transitions, 5207 flow. Second operand has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:02,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:02,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:15:02,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:04,562 INFO L124 PetriNetUnfolderBase]: 5951/11910 cut-off events. [2024-11-09 15:15:04,562 INFO L125 PetriNetUnfolderBase]: For 366119/366119 co-relation queries the response was YES. [2024-11-09 15:15:04,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80210 conditions, 11910 events. 5951/11910 cut-off events. For 366119/366119 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 101322 event pairs, 376 based on Foata normal form. 96/11987 useless extension candidates. Maximal degree in co-relation 80131. Up to 5569 conditions per place. [2024-11-09 15:15:04,704 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 334 selfloop transitions, 64 changer transitions 8/420 dead transitions. [2024-11-09 15:15:04,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 420 transitions, 7092 flow [2024-11-09 15:15:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 15:15:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 15:15:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 488 transitions. [2024-11-09 15:15:04,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4514338575393155 [2024-11-09 15:15:04,705 INFO L175 Difference]: Start difference. First operand has 233 places, 316 transitions, 5207 flow. Second operand 23 states and 488 transitions. [2024-11-09 15:15:04,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 420 transitions, 7092 flow [2024-11-09 15:15:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 420 transitions, 5913 flow, removed 563 selfloop flow, removed 17 redundant places. [2024-11-09 15:15:06,094 INFO L231 Difference]: Finished difference. Result has 241 places, 317 transitions, 4351 flow [2024-11-09 15:15:06,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4351, PETRI_PLACES=241, PETRI_TRANSITIONS=317} [2024-11-09 15:15:06,094 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 194 predicate places. [2024-11-09 15:15:06,095 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 317 transitions, 4351 flow [2024-11-09 15:15:06,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.076923076923077) internal successors, (444), 26 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:06,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:06,095 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:06,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:06,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:06,297 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:15:06,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1843363683, now seen corresponding path program 6 times [2024-11-09 15:15:06,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:06,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364821469] [2024-11-09 15:15:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:06,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:06,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364821469] [2024-11-09 15:15:06,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364821469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:06,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113942549] [2024-11-09 15:15:06,907 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 15:15:06,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:06,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:06,909 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:06,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 15:15:06,978 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 15:15:06,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:06,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 15:15:06,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:07,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:07,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:08,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 103 [2024-11-09 15:15:08,433 INFO L349 Elim1Store]: treesize reduction 46, result has 55.3 percent of original size [2024-11-09 15:15:08,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 302 treesize of output 259 [2024-11-09 15:15:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113942549] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:09,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-11-09 15:15:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577678338] [2024-11-09 15:15:09,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:09,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 15:15:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 15:15:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1645, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 15:15:09,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:15:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 317 transitions, 4351 flow. Second operand has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:09,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:15:09,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:14,523 INFO L124 PetriNetUnfolderBase]: 8297/16548 cut-off events. [2024-11-09 15:15:14,523 INFO L125 PetriNetUnfolderBase]: For 623874/623874 co-relation queries the response was YES. [2024-11-09 15:15:14,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108126 conditions, 16548 events. 8297/16548 cut-off events. For 623874/623874 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 144414 event pairs, 568 based on Foata normal form. 720/17249 useless extension candidates. Maximal degree in co-relation 108044. Up to 4075 conditions per place. [2024-11-09 15:15:14,727 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 304 selfloop transitions, 276 changer transitions 25/619 dead transitions. [2024-11-09 15:15:14,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 619 transitions, 9514 flow [2024-11-09 15:15:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 15:15:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-09 15:15:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 824 transitions. [2024-11-09 15:15:14,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46136618141097424 [2024-11-09 15:15:14,729 INFO L175 Difference]: Start difference. First operand has 241 places, 317 transitions, 4351 flow. Second operand 38 states and 824 transitions. [2024-11-09 15:15:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 619 transitions, 9514 flow [2024-11-09 15:15:16,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 619 transitions, 9132 flow, removed 119 selfloop flow, removed 19 redundant places. [2024-11-09 15:15:16,022 INFO L231 Difference]: Finished difference. Result has 271 places, 431 transitions, 7594 flow [2024-11-09 15:15:16,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7594, PETRI_PLACES=271, PETRI_TRANSITIONS=431} [2024-11-09 15:15:16,022 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 224 predicate places. [2024-11-09 15:15:16,022 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 431 transitions, 7594 flow [2024-11-09 15:15:16,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:16,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:16,023 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:16,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:16,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:16,223 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:15:16,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash -386840604, now seen corresponding path program 4 times [2024-11-09 15:15:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:16,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291916049] [2024-11-09 15:15:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:16,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:16,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291916049] [2024-11-09 15:15:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291916049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:16,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597423604] [2024-11-09 15:15:16,800 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 15:15:16,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:16,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:16,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 15:15:16,872 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 15:15:16,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:16,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 15:15:16,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 15:15:17,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:17,061 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 15:15:17,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 15:15:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 15:15:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597423604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:17,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:17,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 4] total 25 [2024-11-09 15:15:17,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243060904] [2024-11-09 15:15:17,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:17,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 15:15:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 15:15:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-11-09 15:15:17,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:15:17,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 431 transitions, 7594 flow. Second operand has 27 states, 27 states have (on average 16.666666666666668) internal successors, (450), 27 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:17,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:17,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:15:17,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:21,865 INFO L124 PetriNetUnfolderBase]: 8819/17756 cut-off events. [2024-11-09 15:15:21,865 INFO L125 PetriNetUnfolderBase]: For 1002623/1002623 co-relation queries the response was YES. [2024-11-09 15:15:22,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137794 conditions, 17756 events. 8819/17756 cut-off events. For 1002623/1002623 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 159918 event pairs, 532 based on Foata normal form. 840/18564 useless extension candidates. Maximal degree in co-relation 137699. Up to 4183 conditions per place. [2024-11-09 15:15:22,081 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 332 selfloop transitions, 307 changer transitions 19/672 dead transitions. [2024-11-09 15:15:22,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 672 transitions, 12262 flow [2024-11-09 15:15:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 15:15:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-09 15:15:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 881 transitions. [2024-11-09 15:15:22,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46861702127659577 [2024-11-09 15:15:22,083 INFO L175 Difference]: Start difference. First operand has 271 places, 431 transitions, 7594 flow. Second operand 40 states and 881 transitions. [2024-11-09 15:15:22,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 672 transitions, 12262 flow [2024-11-09 15:15:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 672 transitions, 11248 flow, removed 459 selfloop flow, removed 22 redundant places. [2024-11-09 15:15:24,443 INFO L231 Difference]: Finished difference. Result has 289 places, 454 transitions, 8916 flow [2024-11-09 15:15:24,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=8916, PETRI_PLACES=289, PETRI_TRANSITIONS=454} [2024-11-09 15:15:24,444 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 242 predicate places. [2024-11-09 15:15:24,444 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 454 transitions, 8916 flow [2024-11-09 15:15:24,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 16.666666666666668) internal successors, (450), 27 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:24,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:24,444 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:24,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 15:15:24,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:24,645 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:15:24,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:24,646 INFO L85 PathProgramCache]: Analyzing trace with hash -386840603, now seen corresponding path program 7 times [2024-11-09 15:15:24,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:24,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577365192] [2024-11-09 15:15:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:24,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:25,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577365192] [2024-11-09 15:15:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577365192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073633722] [2024-11-09 15:15:25,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 15:15:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:25,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:25,227 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:25,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 15:15:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:25,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 15:15:25,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:25,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:26,011 INFO L349 Elim1Store]: treesize reduction 23, result has 53.1 percent of original size [2024-11-09 15:15:26,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 41 [2024-11-09 15:15:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073633722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:26,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 43 [2024-11-09 15:15:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064491336] [2024-11-09 15:15:26,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:26,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-09 15:15:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-09 15:15:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1687, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 15:15:26,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:15:26,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 454 transitions, 8916 flow. Second operand has 45 states, 45 states have (on average 16.4) internal successors, (738), 45 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:26,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:26,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:15:26,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:15:33,551 INFO L124 PetriNetUnfolderBase]: 9881/20372 cut-off events. [2024-11-09 15:15:33,551 INFO L125 PetriNetUnfolderBase]: For 1089466/1089466 co-relation queries the response was YES. [2024-11-09 15:15:33,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152526 conditions, 20372 events. 9881/20372 cut-off events. For 1089466/1089466 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 185059 event pairs, 550 based on Foata normal form. 534/20889 useless extension candidates. Maximal degree in co-relation 152425. Up to 4687 conditions per place. [2024-11-09 15:15:33,823 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 330 selfloop transitions, 378 changer transitions 20/742 dead transitions. [2024-11-09 15:15:33,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 742 transitions, 14141 flow [2024-11-09 15:15:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 15:15:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-09 15:15:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 983 transitions. [2024-11-09 15:15:33,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46477541371158393 [2024-11-09 15:15:33,824 INFO L175 Difference]: Start difference. First operand has 289 places, 454 transitions, 8916 flow. Second operand 45 states and 983 transitions. [2024-11-09 15:15:33,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 742 transitions, 14141 flow [2024-11-09 15:15:37,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 742 transitions, 12726 flow, removed 679 selfloop flow, removed 21 redundant places. [2024-11-09 15:15:37,241 INFO L231 Difference]: Finished difference. Result has 321 places, 538 transitions, 11182 flow [2024-11-09 15:15:37,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7435, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11182, PETRI_PLACES=321, PETRI_TRANSITIONS=538} [2024-11-09 15:15:37,242 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 274 predicate places. [2024-11-09 15:15:37,242 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 538 transitions, 11182 flow [2024-11-09 15:15:37,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 16.4) internal successors, (738), 45 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:37,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:15:37,242 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:15:37,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 15:15:37,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 15:15:37,443 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-09 15:15:37,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:15:37,443 INFO L85 PathProgramCache]: Analyzing trace with hash 160904553, now seen corresponding path program 8 times [2024-11-09 15:15:37,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:15:37,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852861537] [2024-11-09 15:15:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:15:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:15:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:15:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:38,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:15:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852861537] [2024-11-09 15:15:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852861537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:15:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904987080] [2024-11-09 15:15:38,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:15:38,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:15:38,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:15:38,039 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:15:38,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 15:15:38,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:15:38,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:15:38,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 15:15:38,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:15:38,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-09 15:15:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:38,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:15:39,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2024-11-09 15:15:39,143 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-09 15:15:39,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 131 [2024-11-09 15:15:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:15:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904987080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:15:39,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:15:39,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2024-11-09 15:15:39,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167371148] [2024-11-09 15:15:39,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:15:39,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 15:15:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:15:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 15:15:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 15:15:39,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-09 15:15:39,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 538 transitions, 11182 flow. Second operand has 44 states, 44 states have (on average 16.431818181818183) internal successors, (723), 44 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:15:39,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:15:39,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-09 15:15:39,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand