./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-symm.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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:03:15,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:03:15,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:03:15,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:03:15,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:03:15,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:03:15,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:03:15,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:03:15,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:03:15,812 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:03:15,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:03:15,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:03:15,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:03:15,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:03:15,813 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:03:15,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:03:15,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:03:15,817 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:03:15,817 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:03:15,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:03:15,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:03:15,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:03:15,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:03:15,819 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:03:15,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:03:15,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:03:15,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:03:15,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:03:15,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:03:15,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:03:15,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:03:15,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:03:15,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:03:15,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:03:15,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:03:15,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:03:15,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:03:15,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:03:15,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-19 14:03:16,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:03:16,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:03:16,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:03:16,022 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:03:16,023 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:03:16,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-19 14:03:17,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:03:17,558 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:03:17,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-19 14:03:17,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300d78179/1ca0c291d069469fb11264b50bc53a2c/FLAGf884c1df1 [2024-11-19 14:03:17,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300d78179/1ca0c291d069469fb11264b50bc53a2c [2024-11-19 14:03:17,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:03:17,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:03:17,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:03:17,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:03:17,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:03:17,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6169ebd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17, skipping insertion in model container [2024-11-19 14:03:17,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,614 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:03:17,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:03:17,769 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:03:17,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:03:17,806 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:03:17,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17 WrapperNode [2024-11-19 14:03:17,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:03:17,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:03:17,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:03:17,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:03:17,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,844 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 337 [2024-11-19 14:03:17,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:03:17,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:03:17,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:03:17,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:03:17,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,871 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 10, 6]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-19 14:03:17,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:03:17,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:03:17,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:03:17,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:03:17,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (1/1) ... [2024-11-19 14:03:17,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:03:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:17,979 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) [2024-11-19 14:03:17,991 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 [2024-11-19 14:03:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:03:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:03:18,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:03:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:03:18,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:03:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:03:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:03:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:03:18,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:03:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 14:03:18,029 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:03:18,117 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:03:18,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:03:18,503 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:03:18,503 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:03:18,790 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:03:18,790 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:03:18,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:18 BoogieIcfgContainer [2024-11-19 14:03:18,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:03:18,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:03:18,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:03:18,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:03:18,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:03:17" (1/3) ... [2024-11-19 14:03:18,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5b334d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:18, skipping insertion in model container [2024-11-19 14:03:18,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:17" (2/3) ... [2024-11-19 14:03:18,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5b334d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:18, skipping insertion in model container [2024-11-19 14:03:18,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:18" (3/3) ... [2024-11-19 14:03:18,800 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-19 14:03:18,815 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:03:18,815 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-19 14:03:18,816 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:03:18,872 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:03:18,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 208 flow [2024-11-19 14:03:18,976 INFO L124 PetriNetUnfolderBase]: 10/95 cut-off events. [2024-11-19 14:03:18,977 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:03:18,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 10/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 240 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-19 14:03:18,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 97 transitions, 208 flow [2024-11-19 14:03:18,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 94 transitions, 200 flow [2024-11-19 14:03:18,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:03:19,000 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;@3ff371a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:03:19,000 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-19 14:03:19,002 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:03:19,002 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-19 14:03:19,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:03:19,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,003 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-19 14:03:19,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:19,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 33036, now seen corresponding path program 1 times [2024-11-19 14:03:19,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197659794] [2024-11-19 14:03:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:19,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197659794] [2024-11-19 14:03:19,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197659794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:19,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:19,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:03:19,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601064432] [2024-11-19 14:03:19,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:19,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:19,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:19,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-19 14:03:19,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:19,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:19,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:19,319 INFO L124 PetriNetUnfolderBase]: 285/731 cut-off events. [2024-11-19 14:03:19,319 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-19 14:03:19,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 731 events. 285/731 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4327 event pairs, 176 based on Foata normal form. 4/575 useless extension candidates. Maximal degree in co-relation 1096. Up to 450 conditions per place. [2024-11-19 14:03:19,325 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 41 selfloop transitions, 1 changer transitions 2/90 dead transitions. [2024-11-19 14:03:19,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 278 flow [2024-11-19 14:03:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-19 14:03:19,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 14:03:19,337 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 200 flow. Second operand 3 states and 194 transitions. [2024-11-19 14:03:19,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 278 flow [2024-11-19 14:03:19,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:19,342 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 181 flow [2024-11-19 14:03:19,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2024-11-19 14:03:19,346 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2024-11-19 14:03:19,346 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 181 flow [2024-11-19 14:03:19,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-19 14:03:19,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,347 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:03:19,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:03:19,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:19,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1025119, now seen corresponding path program 1 times [2024-11-19 14:03:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385204573] [2024-11-19 14:03:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385204573] [2024-11-19 14:03:19,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385204573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:19,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:19,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:03:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912517119] [2024-11-19 14:03:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:19,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:19,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:19,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-19 14:03:19,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:19,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:19,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:19,541 INFO L124 PetriNetUnfolderBase]: 285/727 cut-off events. [2024-11-19 14:03:19,541 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-19 14:03:19,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 727 events. 285/727 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4302 event pairs, 176 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 1180. Up to 447 conditions per place. [2024-11-19 14:03:19,550 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 39 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2024-11-19 14:03:19,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 257 flow [2024-11-19 14:03:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-19 14:03:19,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6494845360824743 [2024-11-19 14:03:19,552 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 181 flow. Second operand 3 states and 189 transitions. [2024-11-19 14:03:19,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 257 flow [2024-11-19 14:03:19,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:19,554 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 178 flow [2024-11-19 14:03:19,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-11-19 14:03:19,555 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2024-11-19 14:03:19,555 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 178 flow [2024-11-19 14:03:19,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2024-11-19 14:03:19,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:03:19,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:03:19,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:19,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 985171895, now seen corresponding path program 1 times [2024-11-19 14:03:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:19,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440746595] [2024-11-19 14:03:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440746595] [2024-11-19 14:03:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440746595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:19,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:19,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013787525] [2024-11-19 14:03:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:19,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:19,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:19,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:19,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2024-11-19 14:03:19,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:19,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:19,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:19,863 INFO L124 PetriNetUnfolderBase]: 287/735 cut-off events. [2024-11-19 14:03:19,864 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-19 14:03:19,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 735 events. 287/735 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4338 event pairs, 176 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 1198. Up to 454 conditions per place. [2024-11-19 14:03:19,867 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 42 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-19 14:03:19,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 290 flow [2024-11-19 14:03:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-19 14:03:19,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-11-19 14:03:19,872 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 178 flow. Second operand 4 states and 250 transitions. [2024-11-19 14:03:19,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 290 flow [2024-11-19 14:03:19,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:19,875 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 235 flow [2024-11-19 14:03:19,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-19 14:03:19,876 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-19 14:03:19,876 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 235 flow [2024-11-19 14:03:19,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2024-11-19 14:03:19,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:03:19,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:03:19,877 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:19,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash 985171910, now seen corresponding path program 1 times [2024-11-19 14:03:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:19,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483912868] [2024-11-19 14:03:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:19,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483912868] [2024-11-19 14:03:19,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483912868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:03:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905464120] [2024-11-19 14:03:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:19,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:19,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:19,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:19,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:19,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-19 14:03:19,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:19,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:19,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:20,035 INFO L124 PetriNetUnfolderBase]: 287/733 cut-off events. [2024-11-19 14:03:20,036 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 14:03:20,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 733 events. 287/733 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4323 event pairs, 176 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 1218. Up to 455 conditions per place. [2024-11-19 14:03:20,039 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 47 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-11-19 14:03:20,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 327 flow [2024-11-19 14:03:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-19 14:03:20,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6563573883161512 [2024-11-19 14:03:20,042 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 235 flow. Second operand 3 states and 191 transitions. [2024-11-19 14:03:20,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 327 flow [2024-11-19 14:03:20,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:20,045 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 227 flow [2024-11-19 14:03:20,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-11-19 14:03:20,045 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2024-11-19 14:03:20,046 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 227 flow [2024-11-19 14:03:20,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-19 14:03:20,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:20,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 14:03:20,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:03:20,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:20,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 475559153, now seen corresponding path program 1 times [2024-11-19 14:03:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796932520] [2024-11-19 14:03:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796932520] [2024-11-19 14:03:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796932520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:20,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:03:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968228939] [2024-11-19 14:03:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:20,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:20,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:20,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-19 14:03:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:20,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:20,197 INFO L124 PetriNetUnfolderBase]: 287/731 cut-off events. [2024-11-19 14:03:20,197 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 14:03:20,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 731 events. 287/731 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4324 event pairs, 176 based on Foata normal form. 1/578 useless extension candidates. Maximal degree in co-relation 1210. Up to 453 conditions per place. [2024-11-19 14:03:20,201 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2024-11-19 14:03:20,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 315 flow [2024-11-19 14:03:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-19 14:03:20,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6494845360824743 [2024-11-19 14:03:20,202 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 227 flow. Second operand 3 states and 189 transitions. [2024-11-19 14:03:20,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 315 flow [2024-11-19 14:03:20,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:20,204 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 224 flow [2024-11-19 14:03:20,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-11-19 14:03:20,205 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -7 predicate places. [2024-11-19 14:03:20,205 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 224 flow [2024-11-19 14:03:20,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-11-19 14:03:20,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:20,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:20,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:03:20,206 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:20,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1745404094, now seen corresponding path program 1 times [2024-11-19 14:03:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:20,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556715969] [2024-11-19 14:03:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:20,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:20,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556715969] [2024-11-19 14:03:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556715969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:20,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374031217] [2024-11-19 14:03:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:20,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:20,277 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) [2024-11-19 14:03:20,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:03:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:20,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:20,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:20,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374031217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:20,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:20,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:03:20,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701120829] [2024-11-19 14:03:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:20,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:03:20,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:03:20,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:20,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:20,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2024-11-19 14:03:20,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:20,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:20,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:20,603 INFO L124 PetriNetUnfolderBase]: 287/729 cut-off events. [2024-11-19 14:03:20,603 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 14:03:20,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 729 events. 287/729 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4303 event pairs, 176 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 1208. Up to 444 conditions per place. [2024-11-19 14:03:20,607 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 34 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-11-19 14:03:20,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 312 flow [2024-11-19 14:03:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:03:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:03:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-11-19 14:03:20,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5910652920962199 [2024-11-19 14:03:20,608 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 224 flow. Second operand 6 states and 344 transitions. [2024-11-19 14:03:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 312 flow [2024-11-19 14:03:20,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:20,610 INFO L231 Difference]: Finished difference. Result has 86 places, 86 transitions, 243 flow [2024-11-19 14:03:20,610 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=86, PETRI_TRANSITIONS=86} [2024-11-19 14:03:20,610 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-11-19 14:03:20,611 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 86 transitions, 243 flow [2024-11-19 14:03:20,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 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) [2024-11-19 14:03:20,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:20,611 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-19 14:03:20,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:03:20,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 14:03:20,816 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1727046913, now seen corresponding path program 1 times [2024-11-19 14:03:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250067247] [2024-11-19 14:03:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:20,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250067247] [2024-11-19 14:03:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250067247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439535134] [2024-11-19 14:03:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:20,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:20,898 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) [2024-11-19 14:03:20,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:03:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:20,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:20,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:21,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439535134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:21,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:21,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:03:21,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306619153] [2024-11-19 14:03:21,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:03:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:03:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:03:21,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:21,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 86 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 50.166666666666664) internal successors, (602), 12 states have internal predecessors, (602), 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) [2024-11-19 14:03:21,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:21,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:21,233 INFO L124 PetriNetUnfolderBase]: 293/753 cut-off events. [2024-11-19 14:03:21,233 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-19 14:03:21,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 753 events. 293/753 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4455 event pairs, 176 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 1300. Up to 458 conditions per place. [2024-11-19 14:03:21,236 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 40 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-11-19 14:03:21,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 104 transitions, 483 flow [2024-11-19 14:03:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:03:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:03:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-19 14:03:21,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793814432989691 [2024-11-19 14:03:21,238 INFO L175 Difference]: Start difference. First operand has 86 places, 86 transitions, 243 flow. Second operand 10 states and 562 transitions. [2024-11-19 14:03:21,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 104 transitions, 483 flow [2024-11-19 14:03:21,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 423 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:21,244 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 379 flow [2024-11-19 14:03:21,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=379, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-11-19 14:03:21,245 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2024-11-19 14:03:21,245 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 379 flow [2024-11-19 14:03:21,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.166666666666664) internal successors, (602), 12 states have internal predecessors, (602), 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) [2024-11-19 14:03:21,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:21,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:21,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:03:21,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-19 14:03:21,447 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:21,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1547741103, now seen corresponding path program 1 times [2024-11-19 14:03:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731942196] [2024-11-19 14:03:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:21,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:21,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731942196] [2024-11-19 14:03:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731942196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:21,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:21,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:21,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595781926] [2024-11-19 14:03:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:21,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:21,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:21,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:21,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:21,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:21,622 INFO L124 PetriNetUnfolderBase]: 295/761 cut-off events. [2024-11-19 14:03:21,623 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-19 14:03:21,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 761 events. 295/761 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4523 event pairs, 176 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1326. Up to 478 conditions per place. [2024-11-19 14:03:21,626 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 66 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2024-11-19 14:03:21,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 110 transitions, 539 flow [2024-11-19 14:03:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-11-19 14:03:21,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-11-19 14:03:21,627 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 379 flow. Second operand 4 states and 250 transitions. [2024-11-19 14:03:21,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 110 transitions, 539 flow [2024-11-19 14:03:21,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 517 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:21,632 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 415 flow [2024-11-19 14:03:21,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-11-19 14:03:21,633 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2024-11-19 14:03:21,633 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 415 flow [2024-11-19 14:03:21,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:21,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:21,634 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:21,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:03:21,635 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:21,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2014698696, now seen corresponding path program 1 times [2024-11-19 14:03:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:21,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842993286] [2024-11-19 14:03:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:21,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:21,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842993286] [2024-11-19 14:03:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842993286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505522488] [2024-11-19 14:03:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:21,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:21,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:21,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:21,835 INFO L124 PetriNetUnfolderBase]: 294/760 cut-off events. [2024-11-19 14:03:21,835 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-19 14:03:21,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 760 events. 294/760 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4471 event pairs, 176 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 1333. Up to 474 conditions per place. [2024-11-19 14:03:21,838 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 66 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-19 14:03:21,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 549 flow [2024-11-19 14:03:21,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:21,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-19 14:03:21,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-19 14:03:21,840 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 415 flow. Second operand 4 states and 239 transitions. [2024-11-19 14:03:21,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 549 flow [2024-11-19 14:03:21,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 109 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:21,842 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 411 flow [2024-11-19 14:03:21,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-11-19 14:03:21,843 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-19 14:03:21,843 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 411 flow [2024-11-19 14:03:21,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:21,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:21,843 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:21,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 14:03:21,844 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:21,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:21,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1291312033, now seen corresponding path program 1 times [2024-11-19 14:03:21,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:21,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314235897] [2024-11-19 14:03:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314235897] [2024-11-19 14:03:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314235897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:21,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:21,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046466406] [2024-11-19 14:03:21,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:21,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:21,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-19 14:03:21,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:21,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:22,030 INFO L124 PetriNetUnfolderBase]: 293/759 cut-off events. [2024-11-19 14:03:22,031 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-19 14:03:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 759 events. 293/759 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4413 event pairs, 176 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 1328. Up to 473 conditions per place. [2024-11-19 14:03:22,034 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 65 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2024-11-19 14:03:22,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 108 transitions, 543 flow [2024-11-19 14:03:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-19 14:03:22,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-19 14:03:22,035 INFO L175 Difference]: Start difference. First operand has 99 places, 109 transitions, 411 flow. Second operand 4 states and 239 transitions. [2024-11-19 14:03:22,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 108 transitions, 543 flow [2024-11-19 14:03:22,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:22,037 INFO L231 Difference]: Finished difference. Result has 100 places, 108 transitions, 409 flow [2024-11-19 14:03:22,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=100, PETRI_TRANSITIONS=108} [2024-11-19 14:03:22,038 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2024-11-19 14:03:22,038 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 108 transitions, 409 flow [2024-11-19 14:03:22,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-19 14:03:22,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:22,038 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2024-11-19 14:03:22,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 14:03:22,039 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:22,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1137609242, now seen corresponding path program 2 times [2024-11-19 14:03:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359292648] [2024-11-19 14:03:22,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:22,048 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:22,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:22,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359292648] [2024-11-19 14:03:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359292648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195088670] [2024-11-19 14:03:22,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:22,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:22,097 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) [2024-11-19 14:03:22,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:03:22,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:22,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:22,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:22,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:22,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:22,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195088670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:22,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:22,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-19 14:03:22,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194027995] [2024-11-19 14:03:22,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:22,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:22,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:22,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:03:22,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-19 14:03:22,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 108 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 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) [2024-11-19 14:03:22,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:22,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-19 14:03:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:22,364 INFO L124 PetriNetUnfolderBase]: 293/757 cut-off events. [2024-11-19 14:03:22,364 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-19 14:03:22,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 757 events. 293/757 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4402 event pairs, 176 based on Foata normal form. 2/607 useless extension candidates. Maximal degree in co-relation 1319. Up to 453 conditions per place. [2024-11-19 14:03:22,368 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 37 selfloop transitions, 31 changer transitions 0/106 dead transitions. [2024-11-19 14:03:22,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 525 flow [2024-11-19 14:03:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-19 14:03:22,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5505154639175258 [2024-11-19 14:03:22,369 INFO L175 Difference]: Start difference. First operand has 100 places, 108 transitions, 409 flow. Second operand 5 states and 267 transitions. [2024-11-19 14:03:22,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 525 flow [2024-11-19 14:03:22,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 501 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-19 14:03:22,371 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 427 flow [2024-11-19 14:03:22,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2024-11-19 14:03:22,371 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-19 14:03:22,372 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 427 flow [2024-11-19 14:03:22,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 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) [2024-11-19 14:03:22,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:22,372 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:22,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:03:22,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:22,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:22,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1149458727, now seen corresponding path program 1 times [2024-11-19 14:03:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:22,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415575811] [2024-11-19 14:03:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:22,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:22,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415575811] [2024-11-19 14:03:22,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415575811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:22,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796489725] [2024-11-19 14:03:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:22,651 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) [2024-11-19 14:03:22,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:03:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:22,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 14:03:22,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:03:22,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:03:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796489725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:23,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:23,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-19 14:03:23,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908894604] [2024-11-19 14:03:23,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:23,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:03:23,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:03:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:03:23,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-19 14:03:23,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 427 flow. Second operand has 19 states, 19 states have (on average 42.8421052631579) internal successors, (814), 19 states have internal predecessors, (814), 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) [2024-11-19 14:03:23,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:23,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-19 14:03:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:23,697 INFO L124 PetriNetUnfolderBase]: 580/1484 cut-off events. [2024-11-19 14:03:23,697 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-19 14:03:23,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1484 events. 580/1484 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10367 event pairs, 352 based on Foata normal form. 3/1178 useless extension candidates. Maximal degree in co-relation 2586. Up to 453 conditions per place. [2024-11-19 14:03:23,703 INFO L140 encePairwiseOnDemand]: 81/97 looper letters, 74 selfloop transitions, 47 changer transitions 0/155 dead transitions. [2024-11-19 14:03:23,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 879 flow [2024-11-19 14:03:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 14:03:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 14:03:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 835 transitions. [2024-11-19 14:03:23,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782359679266896 [2024-11-19 14:03:23,705 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 427 flow. Second operand 18 states and 835 transitions. [2024-11-19 14:03:23,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 879 flow [2024-11-19 14:03:23,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 155 transitions, 787 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:23,708 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 621 flow [2024-11-19 14:03:23,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=621, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2024-11-19 14:03:23,708 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 18 predicate places. [2024-11-19 14:03:23,708 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 621 flow [2024-11-19 14:03:23,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.8421052631579) internal successors, (814), 19 states have internal predecessors, (814), 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) [2024-11-19 14:03:23,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:23,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:23,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:03:23,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:23,913 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:23,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1216054083, now seen corresponding path program 1 times [2024-11-19 14:03:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971197874] [2024-11-19 14:03:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:03:23,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:23,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971197874] [2024-11-19 14:03:23,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971197874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:23,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905032458] [2024-11-19 14:03:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:23,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:23,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:23,979 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) [2024-11-19 14:03:23,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:03:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:24,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:24,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:03:24,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 14:03:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905032458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:24,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:24,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 14:03:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276763732] [2024-11-19 14:03:24,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:24,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:03:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:03:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:03:24,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:24,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 621 flow. Second operand has 12 states, 12 states have (on average 50.833333333333336) internal successors, (610), 12 states have internal predecessors, (610), 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) [2024-11-19 14:03:24,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:24,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:24,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:24,592 INFO L124 PetriNetUnfolderBase]: 589/1520 cut-off events. [2024-11-19 14:03:24,592 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2024-11-19 14:03:24,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1520 events. 589/1520 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10763 event pairs, 352 based on Foata normal form. 9/1229 useless extension candidates. Maximal degree in co-relation 2734. Up to 936 conditions per place. [2024-11-19 14:03:24,599 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 75 selfloop transitions, 44 changer transitions 0/153 dead transitions. [2024-11-19 14:03:24,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 153 transitions, 1027 flow [2024-11-19 14:03:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:03:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:03:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 562 transitions. [2024-11-19 14:03:24,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793814432989691 [2024-11-19 14:03:24,601 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 621 flow. Second operand 10 states and 562 transitions. [2024-11-19 14:03:24,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 153 transitions, 1027 flow [2024-11-19 14:03:24,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 153 transitions, 943 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:24,605 INFO L231 Difference]: Finished difference. Result has 117 places, 153 transitions, 841 flow [2024-11-19 14:03:24,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=841, PETRI_PLACES=117, PETRI_TRANSITIONS=153} [2024-11-19 14:03:24,606 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2024-11-19 14:03:24,607 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 153 transitions, 841 flow [2024-11-19 14:03:24,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.833333333333336) internal successors, (610), 12 states have internal predecessors, (610), 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) [2024-11-19 14:03:24,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:24,607 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:24,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:24,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 14:03:24,809 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:24,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2146986915, now seen corresponding path program 1 times [2024-11-19 14:03:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:24,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889630829] [2024-11-19 14:03:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:24,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:24,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889630829] [2024-11-19 14:03:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889630829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898027696] [2024-11-19 14:03:24,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:24,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:24,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:24,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-19 14:03:24,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 153 transitions, 841 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-19 14:03:24,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:24,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-19 14:03:24,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:25,204 INFO L124 PetriNetUnfolderBase]: 1107/2530 cut-off events. [2024-11-19 14:03:25,204 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2024-11-19 14:03:25,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4612 conditions, 2530 events. 1107/2530 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18910 event pairs, 322 based on Foata normal form. 80/2123 useless extension candidates. Maximal degree in co-relation 4596. Up to 898 conditions per place. [2024-11-19 14:03:25,213 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 145 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2024-11-19 14:03:25,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 1197 flow [2024-11-19 14:03:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2024-11-19 14:03:25,215 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6804123711340206 [2024-11-19 14:03:25,215 INFO L175 Difference]: Start difference. First operand has 117 places, 153 transitions, 841 flow. Second operand 4 states and 264 transitions. [2024-11-19 14:03:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 1197 flow [2024-11-19 14:03:25,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 1159 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:25,219 INFO L231 Difference]: Finished difference. Result has 120 places, 155 transitions, 837 flow [2024-11-19 14:03:25,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=837, PETRI_PLACES=120, PETRI_TRANSITIONS=155} [2024-11-19 14:03:25,219 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2024-11-19 14:03:25,219 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 155 transitions, 837 flow [2024-11-19 14:03:25,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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) [2024-11-19 14:03:25,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:25,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:25,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:03:25,220 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:25,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:25,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2132086032, now seen corresponding path program 1 times [2024-11-19 14:03:25,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:25,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081850141] [2024-11-19 14:03:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:25,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:03:25,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:25,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081850141] [2024-11-19 14:03:25,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081850141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:25,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691131976] [2024-11-19 14:03:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:25,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:25,366 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) [2024-11-19 14:03:25,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:03:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:25,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:25,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:25,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691131976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-19 14:03:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247760206] [2024-11-19 14:03:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:25,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:25,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 14:03:25,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:25,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 155 transitions, 837 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-19 14:03:25,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:25,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:25,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:25,695 INFO L124 PetriNetUnfolderBase]: 727/1958 cut-off events. [2024-11-19 14:03:25,696 INFO L125 PetriNetUnfolderBase]: For 622/670 co-relation queries the response was YES. [2024-11-19 14:03:25,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1958 events. 727/1958 cut-off events. For 622/670 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15079 event pairs, 456 based on Foata normal form. 28/1645 useless extension candidates. Maximal degree in co-relation 3757. Up to 1173 conditions per place. [2024-11-19 14:03:25,713 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 112 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-11-19 14:03:25,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 153 transitions, 1060 flow [2024-11-19 14:03:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-19 14:03:25,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-19 14:03:25,717 INFO L175 Difference]: Start difference. First operand has 120 places, 155 transitions, 837 flow. Second operand 4 states and 239 transitions. [2024-11-19 14:03:25,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 153 transitions, 1060 flow [2024-11-19 14:03:25,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 153 transitions, 1060 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:03:25,725 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 836 flow [2024-11-19 14:03:25,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=836, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-11-19 14:03:25,726 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 32 predicate places. [2024-11-19 14:03:25,726 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 836 flow [2024-11-19 14:03:25,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-19 14:03:25,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:25,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:25,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:03:25,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 14:03:25,927 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:25,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1807055625, now seen corresponding path program 1 times [2024-11-19 14:03:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:25,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334507848] [2024-11-19 14:03:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:26,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334507848] [2024-11-19 14:03:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334507848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:26,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:26,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980754121] [2024-11-19 14:03:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:26,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:26,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 97 [2024-11-19 14:03:26,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 836 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-19 14:03:26,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:26,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 97 [2024-11-19 14:03:26,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:26,210 INFO L124 PetriNetUnfolderBase]: 725/1956 cut-off events. [2024-11-19 14:03:26,210 INFO L125 PetriNetUnfolderBase]: For 632/680 co-relation queries the response was YES. [2024-11-19 14:03:26,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1956 events. 725/1956 cut-off events. For 632/680 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14945 event pairs, 456 based on Foata normal form. 28/1643 useless extension candidates. Maximal degree in co-relation 3753. Up to 1171 conditions per place. [2024-11-19 14:03:26,220 INFO L140 encePairwiseOnDemand]: 93/97 looper letters, 110 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-11-19 14:03:26,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 151 transitions, 1055 flow [2024-11-19 14:03:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2024-11-19 14:03:26,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615979381443299 [2024-11-19 14:03:26,221 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 836 flow. Second operand 4 states and 239 transitions. [2024-11-19 14:03:26,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 151 transitions, 1055 flow [2024-11-19 14:03:26,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 151 transitions, 1049 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:26,225 INFO L231 Difference]: Finished difference. Result has 124 places, 151 transitions, 829 flow [2024-11-19 14:03:26,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=829, PETRI_PLACES=124, PETRI_TRANSITIONS=151} [2024-11-19 14:03:26,225 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 33 predicate places. [2024-11-19 14:03:26,226 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 151 transitions, 829 flow [2024-11-19 14:03:26,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-19 14:03:26,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:26,226 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:26,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 14:03:26,226 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:26,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash -719985607, now seen corresponding path program 1 times [2024-11-19 14:03:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239604391] [2024-11-19 14:03:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239604391] [2024-11-19 14:03:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239604391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267133854] [2024-11-19 14:03:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:26,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:26,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:26,719 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) [2024-11-19 14:03:26,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:03:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 14:03:26,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:26,886 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 [2024-11-19 14:03:27,001 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 15 treesize of output 7 [2024-11-19 14:03:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:27,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:27,086 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 18 treesize of output 16 [2024-11-19 14:03:27,093 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 22 treesize of output 16 [2024-11-19 14:03:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:27,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267133854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:27,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:27,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-19 14:03:27,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314179857] [2024-11-19 14:03:27,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:27,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 14:03:27,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:27,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 14:03:27,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:03:27,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-11-19 14:03:27,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 829 flow. Second operand has 17 states, 17 states have (on average 45.05882352941177) internal successors, (766), 17 states have internal predecessors, (766), 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) [2024-11-19 14:03:27,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:27,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-11-19 14:03:27,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:28,441 INFO L124 PetriNetUnfolderBase]: 2711/6818 cut-off events. [2024-11-19 14:03:28,441 INFO L125 PetriNetUnfolderBase]: For 1918/1962 co-relation queries the response was YES. [2024-11-19 14:03:28,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13238 conditions, 6818 events. 2711/6818 cut-off events. For 1918/1962 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63550 event pairs, 730 based on Foata normal form. 44/5905 useless extension candidates. Maximal degree in co-relation 13217. Up to 876 conditions per place. [2024-11-19 14:03:28,466 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 286 selfloop transitions, 46 changer transitions 0/366 dead transitions. [2024-11-19 14:03:28,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 366 transitions, 2446 flow [2024-11-19 14:03:28,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:03:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:03:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 812 transitions. [2024-11-19 14:03:28,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580756013745705 [2024-11-19 14:03:28,469 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 829 flow. Second operand 15 states and 812 transitions. [2024-11-19 14:03:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 366 transitions, 2446 flow [2024-11-19 14:03:28,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 366 transitions, 2432 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:28,480 INFO L231 Difference]: Finished difference. Result has 139 places, 164 transitions, 1022 flow [2024-11-19 14:03:28,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1022, PETRI_PLACES=139, PETRI_TRANSITIONS=164} [2024-11-19 14:03:28,481 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 48 predicate places. [2024-11-19 14:03:28,481 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 164 transitions, 1022 flow [2024-11-19 14:03:28,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 45.05882352941177) internal successors, (766), 17 states have internal predecessors, (766), 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) [2024-11-19 14:03:28,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:28,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:28,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:28,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:28,686 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:28,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash -844748002, now seen corresponding path program 1 times [2024-11-19 14:03:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:28,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116290681] [2024-11-19 14:03:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:29,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:29,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116290681] [2024-11-19 14:03:29,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116290681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:29,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760289645] [2024-11-19 14:03:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:29,098 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) [2024-11-19 14:03:29,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:03:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:29,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 14:03:29,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:29,224 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 [2024-11-19 14:03:29,430 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:03:29,430 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 25 treesize of output 12 [2024-11-19 14:03:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:29,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:29,607 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 20 treesize of output 18 [2024-11-19 14:03:29,610 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 26 treesize of output 20 [2024-11-19 14:03:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760289645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:29,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:29,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-19 14:03:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436778528] [2024-11-19 14:03:29,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:29,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 14:03:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:29,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 14:03:29,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-19 14:03:29,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 97 [2024-11-19 14:03:29,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 164 transitions, 1022 flow. Second operand has 17 states, 17 states have (on average 43.1764705882353) internal successors, (734), 17 states have internal predecessors, (734), 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) [2024-11-19 14:03:29,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:29,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 97 [2024-11-19 14:03:29,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:30,884 INFO L124 PetriNetUnfolderBase]: 3243/7370 cut-off events. [2024-11-19 14:03:30,885 INFO L125 PetriNetUnfolderBase]: For 4215/4259 co-relation queries the response was YES. [2024-11-19 14:03:30,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15836 conditions, 7370 events. 3243/7370 cut-off events. For 4215/4259 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 65063 event pairs, 912 based on Foata normal form. 124/6533 useless extension candidates. Maximal degree in co-relation 15812. Up to 1166 conditions per place. [2024-11-19 14:03:30,917 INFO L140 encePairwiseOnDemand]: 84/97 looper letters, 291 selfloop transitions, 46 changer transitions 0/368 dead transitions. [2024-11-19 14:03:30,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 368 transitions, 2592 flow [2024-11-19 14:03:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 14:03:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 14:03:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 781 transitions. [2024-11-19 14:03:30,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5367697594501718 [2024-11-19 14:03:30,919 INFO L175 Difference]: Start difference. First operand has 139 places, 164 transitions, 1022 flow. Second operand 15 states and 781 transitions. [2024-11-19 14:03:30,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 368 transitions, 2592 flow [2024-11-19 14:03:30,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 368 transitions, 2573 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:30,932 INFO L231 Difference]: Finished difference. Result has 150 places, 167 transitions, 1135 flow [2024-11-19 14:03:30,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1135, PETRI_PLACES=150, PETRI_TRANSITIONS=167} [2024-11-19 14:03:30,932 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 59 predicate places. [2024-11-19 14:03:30,932 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 167 transitions, 1135 flow [2024-11-19 14:03:30,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 43.1764705882353) internal successors, (734), 17 states have internal predecessors, (734), 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) [2024-11-19 14:03:30,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:30,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:30,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 14:03:31,133 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,SelfDestructingSolverStorable17 [2024-11-19 14:03:31,134 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:31,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1688695304, now seen corresponding path program 1 times [2024-11-19 14:03:31,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703969724] [2024-11-19 14:03:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:31,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:03:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703969724] [2024-11-19 14:03:31,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703969724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:31,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265830651] [2024-11-19 14:03:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:31,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:31,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:31,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-19 14:03:31,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 167 transitions, 1135 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-19 14:03:31,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:31,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-19 14:03:31,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:32,180 INFO L124 PetriNetUnfolderBase]: 4403/10010 cut-off events. [2024-11-19 14:03:32,180 INFO L125 PetriNetUnfolderBase]: For 8813/8971 co-relation queries the response was YES. [2024-11-19 14:03:32,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22497 conditions, 10010 events. 4403/10010 cut-off events. For 8813/8971 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 94151 event pairs, 1508 based on Foata normal form. 426/8935 useless extension candidates. Maximal degree in co-relation 22471. Up to 3692 conditions per place. [2024-11-19 14:03:32,225 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 178 selfloop transitions, 5 changer transitions 0/218 dead transitions. [2024-11-19 14:03:32,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 218 transitions, 1809 flow [2024-11-19 14:03:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-19 14:03:32,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6752577319587629 [2024-11-19 14:03:32,227 INFO L175 Difference]: Start difference. First operand has 150 places, 167 transitions, 1135 flow. Second operand 4 states and 262 transitions. [2024-11-19 14:03:32,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 218 transitions, 1809 flow [2024-11-19 14:03:32,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 218 transitions, 1721 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-11-19 14:03:32,241 INFO L231 Difference]: Finished difference. Result has 145 places, 169 transitions, 1109 flow [2024-11-19 14:03:32,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1109, PETRI_PLACES=145, PETRI_TRANSITIONS=169} [2024-11-19 14:03:32,241 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 54 predicate places. [2024-11-19 14:03:32,241 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 169 transitions, 1109 flow [2024-11-19 14:03:32,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-19 14:03:32,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:32,242 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:32,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 14:03:32,242 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:32,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1493829074, now seen corresponding path program 2 times [2024-11-19 14:03:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:32,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777848566] [2024-11-19 14:03:32,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:32,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:32,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 14:03:32,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777848566] [2024-11-19 14:03:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777848566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857494234] [2024-11-19 14:03:32,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:32,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:32,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:32,306 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) [2024-11-19 14:03:32,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:03:32,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:32,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:32,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:32,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 14:03:32,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 14:03:32,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857494234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:32,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:32,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-19 14:03:32,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819129254] [2024-11-19 14:03:32,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:32,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:32,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:32,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:03:32,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-19 14:03:32,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 169 transitions, 1109 flow. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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) [2024-11-19 14:03:32,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:32,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-19 14:03:32,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:33,139 INFO L124 PetriNetUnfolderBase]: 3129/8529 cut-off events. [2024-11-19 14:03:33,140 INFO L125 PetriNetUnfolderBase]: For 7183/7391 co-relation queries the response was YES. [2024-11-19 14:03:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19077 conditions, 8529 events. 3129/8529 cut-off events. For 7183/7391 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 87054 event pairs, 2120 based on Foata normal form. 149/7697 useless extension candidates. Maximal degree in co-relation 19051. Up to 4741 conditions per place. [2024-11-19 14:03:33,186 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 78 selfloop transitions, 50 changer transitions 0/167 dead transitions. [2024-11-19 14:03:33,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 167 transitions, 1345 flow [2024-11-19 14:03:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 267 transitions. [2024-11-19 14:03:33,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5505154639175258 [2024-11-19 14:03:33,188 INFO L175 Difference]: Start difference. First operand has 145 places, 169 transitions, 1109 flow. Second operand 5 states and 267 transitions. [2024-11-19 14:03:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 167 transitions, 1345 flow [2024-11-19 14:03:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 167 transitions, 1313 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:33,207 INFO L231 Difference]: Finished difference. Result has 143 places, 167 transitions, 1157 flow [2024-11-19 14:03:33,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1157, PETRI_PLACES=143, PETRI_TRANSITIONS=167} [2024-11-19 14:03:33,208 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 52 predicate places. [2024-11-19 14:03:33,208 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 167 transitions, 1157 flow [2024-11-19 14:03:33,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 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) [2024-11-19 14:03:33,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:33,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:33,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 14:03:33,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:33,409 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:33,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -417384197, now seen corresponding path program 1 times [2024-11-19 14:03:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:33,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340550632] [2024-11-19 14:03:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:33,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340550632] [2024-11-19 14:03:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340550632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973809546] [2024-11-19 14:03:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:33,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:33,919 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) [2024-11-19 14:03:33,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:03:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:34,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 14:03:34,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:34,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:03:34,054 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 [2024-11-19 14:03:34,185 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:03:34,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:03:34,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-19 14:03:34,388 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:03:34,388 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 25 treesize of output 12 [2024-11-19 14:03:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:34,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:34,477 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_358 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_358) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset))))) is different from false [2024-11-19 14:03:34,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:34,569 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-19 14:03:34,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:34,576 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 47 treesize of output 39 [2024-11-19 14:03:34,579 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 15 treesize of output 9 [2024-11-19 14:03:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2024-11-19 14:03:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973809546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:34,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 14:03:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106322780] [2024-11-19 14:03:34,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:34,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 14:03:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 14:03:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=464, Unknown=1, NotChecked=44, Total=600 [2024-11-19 14:03:34,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-19 14:03:34,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 167 transitions, 1157 flow. Second operand has 25 states, 25 states have (on average 33.04) internal successors, (826), 25 states have internal predecessors, (826), 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) [2024-11-19 14:03:34,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:34,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-19 14:03:34,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:36,270 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (<= 0 c_~id_0~0) (forall ((v_ArrVal_358 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_358) c_~get_2~0.base) .cse0)))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128|) 0)) (forall ((v_ArrVal_358 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_128| v_ArrVal_358) c_~get_2~0.base) .cse0)))))))) is different from false [2024-11-19 14:03:39,016 INFO L124 PetriNetUnfolderBase]: 9099/17287 cut-off events. [2024-11-19 14:03:39,016 INFO L125 PetriNetUnfolderBase]: For 11764/12433 co-relation queries the response was YES. [2024-11-19 14:03:39,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43039 conditions, 17287 events. 9099/17287 cut-off events. For 11764/12433 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 150682 event pairs, 1928 based on Foata normal form. 507/16788 useless extension candidates. Maximal degree in co-relation 43015. Up to 2804 conditions per place. [2024-11-19 14:03:39,085 INFO L140 encePairwiseOnDemand]: 79/97 looper letters, 398 selfloop transitions, 90 changer transitions 0/507 dead transitions. [2024-11-19 14:03:39,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 507 transitions, 3669 flow [2024-11-19 14:03:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 14:03:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-19 14:03:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1201 transitions. [2024-11-19 14:03:39,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4269463206541059 [2024-11-19 14:03:39,089 INFO L175 Difference]: Start difference. First operand has 143 places, 167 transitions, 1157 flow. Second operand 29 states and 1201 transitions. [2024-11-19 14:03:39,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 507 transitions, 3669 flow [2024-11-19 14:03:39,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 507 transitions, 3509 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:39,142 INFO L231 Difference]: Finished difference. Result has 176 places, 217 transitions, 1771 flow [2024-11-19 14:03:39,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1771, PETRI_PLACES=176, PETRI_TRANSITIONS=217} [2024-11-19 14:03:39,143 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 85 predicate places. [2024-11-19 14:03:39,143 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 217 transitions, 1771 flow [2024-11-19 14:03:39,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.04) internal successors, (826), 25 states have internal predecessors, (826), 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) [2024-11-19 14:03:39,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:39,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:39,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:03:39,344 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,SelfDestructingSolverStorable20 [2024-11-19 14:03:39,345 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:39,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:39,346 INFO L85 PathProgramCache]: Analyzing trace with hash 809948001, now seen corresponding path program 1 times [2024-11-19 14:03:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865214549] [2024-11-19 14:03:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:39,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:39,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865214549] [2024-11-19 14:03:39,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865214549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:39,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56112006] [2024-11-19 14:03:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:39,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:39,932 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) [2024-11-19 14:03:39,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:03:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:40,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 14:03:40,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:40,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:03:40,130 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 [2024-11-19 14:03:40,320 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:03:40,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:03:40,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 14:03:40,533 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:03:40,534 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 23 treesize of output 10 [2024-11-19 14:03:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:40,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:40,594 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_393 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_393) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 9223372039002259456)) is different from false [2024-11-19 14:03:40,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:40,700 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-19 14:03:40,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:40,707 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 41 treesize of output 33 [2024-11-19 14:03:40,712 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 13 treesize of output 7 [2024-11-19 14:03:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2024-11-19 14:03:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56112006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:40,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-19 14:03:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461321114] [2024-11-19 14:03:40,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:40,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:03:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:03:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=390, Unknown=1, NotChecked=40, Total=506 [2024-11-19 14:03:40,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-19 14:03:40,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 217 transitions, 1771 flow. Second operand has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-19 14:03:40,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:40,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-19 14:03:40,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:42,662 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (<= 0 c_~id_0~0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_131| Int)) (or (forall ((v_ArrVal_393 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_131| v_ArrVal_393) c_~get_2~0.base) .cse0) 9223372039002259456)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_131|) 0)))) (forall ((v_ArrVal_393 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_393) c_~get_2~0.base) .cse0) 9223372039002259456)))) is different from false [2024-11-19 14:03:45,144 INFO L124 PetriNetUnfolderBase]: 9901/18882 cut-off events. [2024-11-19 14:03:45,144 INFO L125 PetriNetUnfolderBase]: For 34669/35182 co-relation queries the response was YES. [2024-11-19 14:03:45,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53161 conditions, 18882 events. 9901/18882 cut-off events. For 34669/35182 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 166397 event pairs, 2220 based on Foata normal form. 170/17725 useless extension candidates. Maximal degree in co-relation 53128. Up to 3427 conditions per place. [2024-11-19 14:03:45,276 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 365 selfloop transitions, 61 changer transitions 0/456 dead transitions. [2024-11-19 14:03:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 456 transitions, 3998 flow [2024-11-19 14:03:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:03:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:03:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 936 transitions. [2024-11-19 14:03:45,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4386129334582943 [2024-11-19 14:03:45,278 INFO L175 Difference]: Start difference. First operand has 176 places, 217 transitions, 1771 flow. Second operand 22 states and 936 transitions. [2024-11-19 14:03:45,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 456 transitions, 3998 flow [2024-11-19 14:03:45,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 456 transitions, 3876 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-19 14:03:45,365 INFO L231 Difference]: Finished difference. Result has 192 places, 230 transitions, 1904 flow [2024-11-19 14:03:45,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1904, PETRI_PLACES=192, PETRI_TRANSITIONS=230} [2024-11-19 14:03:45,365 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 101 predicate places. [2024-11-19 14:03:45,366 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 230 transitions, 1904 flow [2024-11-19 14:03:45,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-19 14:03:45,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:45,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:45,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 14:03:45,570 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,SelfDestructingSolverStorable21 [2024-11-19 14:03:45,571 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:45,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -54007103, now seen corresponding path program 1 times [2024-11-19 14:03:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291325424] [2024-11-19 14:03:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:45,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:46,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:46,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291325424] [2024-11-19 14:03:46,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291325424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:46,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341862145] [2024-11-19 14:03:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:46,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:46,081 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) [2024-11-19 14:03:46,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:03:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:46,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 14:03:46,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:46,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:03:46,243 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 [2024-11-19 14:03:46,330 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:03:46,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:03:46,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 14:03:46,421 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 15 treesize of output 7 [2024-11-19 14:03:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:46,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:46,513 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_429 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_429) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 2147483648)) is different from false [2024-11-19 14:03:46,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:46,611 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-19 14:03:46,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:46,619 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 41 treesize of output 33 [2024-11-19 14:03:46,623 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 13 treesize of output 7 [2024-11-19 14:03:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2024-11-19 14:03:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341862145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:46,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-19 14:03:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121066635] [2024-11-19 14:03:46,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:46,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:03:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:03:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=390, Unknown=1, NotChecked=40, Total=506 [2024-11-19 14:03:46,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-19 14:03:46,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 230 transitions, 1904 flow. Second operand has 23 states, 23 states have (on average 32.65217391304348) internal successors, (751), 23 states have internal predecessors, (751), 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) [2024-11-19 14:03:46,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:46,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-19 14:03:46,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:48,167 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| Int)) (or (forall ((v_ArrVal_429 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134| v_ArrVal_429) c_~get_2~0.base) .cse0) 2147483648)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_134|) 0)))) (<= 0 c_~id_0~0) (forall ((v_ArrVal_429 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_429) c_~get_2~0.base) .cse0) 2147483648)))) is different from false [2024-11-19 14:03:50,676 INFO L124 PetriNetUnfolderBase]: 10012/18660 cut-off events. [2024-11-19 14:03:50,676 INFO L125 PetriNetUnfolderBase]: For 25774/26693 co-relation queries the response was YES. [2024-11-19 14:03:50,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54433 conditions, 18660 events. 10012/18660 cut-off events. For 25774/26693 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 161373 event pairs, 2556 based on Foata normal form. 944/18566 useless extension candidates. Maximal degree in co-relation 54398. Up to 3883 conditions per place. [2024-11-19 14:03:50,881 INFO L140 encePairwiseOnDemand]: 77/97 looper letters, 402 selfloop transitions, 101 changer transitions 18/545 dead transitions. [2024-11-19 14:03:50,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 545 transitions, 4356 flow [2024-11-19 14:03:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 14:03:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 14:03:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1274 transitions. [2024-11-19 14:03:50,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.423678084469571 [2024-11-19 14:03:50,887 INFO L175 Difference]: Start difference. First operand has 192 places, 230 transitions, 1904 flow. Second operand 31 states and 1274 transitions. [2024-11-19 14:03:50,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 545 transitions, 4356 flow [2024-11-19 14:03:50,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 545 transitions, 4274 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-19 14:03:50,980 INFO L231 Difference]: Finished difference. Result has 215 places, 256 transitions, 2268 flow [2024-11-19 14:03:50,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2268, PETRI_PLACES=215, PETRI_TRANSITIONS=256} [2024-11-19 14:03:50,980 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 124 predicate places. [2024-11-19 14:03:50,981 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 256 transitions, 2268 flow [2024-11-19 14:03:50,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 32.65217391304348) internal successors, (751), 23 states have internal predecessors, (751), 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) [2024-11-19 14:03:50,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:50,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:50,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 14:03:51,185 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,SelfDestructingSolverStorable22 [2024-11-19 14:03:51,186 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:51,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -661446388, now seen corresponding path program 1 times [2024-11-19 14:03:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:51,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54451817] [2024-11-19 14:03:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:51,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54451817] [2024-11-19 14:03:51,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54451817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156700030] [2024-11-19 14:03:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:51,943 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) [2024-11-19 14:03:51,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:03:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:52,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 14:03:52,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:52,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:03:52,098 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 [2024-11-19 14:03:52,230 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:03:52,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:03:52,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-19 14:03:52,450 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:03:52,450 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 25 treesize of output 12 [2024-11-19 14:03:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:03:52,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:52,514 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_464 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_464) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 4294967296))) is different from false [2024-11-19 14:03:52,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:52,608 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-19 14:03:52,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:03:52,616 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 47 treesize of output 39 [2024-11-19 14:03:52,622 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 15 treesize of output 9 [2024-11-19 14:03:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2024-11-19 14:03:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156700030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:52,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-19 14:03:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929744140] [2024-11-19 14:03:52,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:52,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:03:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:03:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=381, Unknown=1, NotChecked=40, Total=506 [2024-11-19 14:03:52,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-19 14:03:52,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 256 transitions, 2268 flow. Second operand has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-19 14:03:52,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:52,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-19 14:03:52,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:54,092 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~id_0~0 4) c_~get_2~0.offset))) (and (forall ((v_ArrVal_464 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_464) c_~get_2~0.base) .cse0) 4294967296))) (<= 0 c_~id_0~0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137| Int)) (or (forall ((v_ArrVal_464 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137| v_ArrVal_464) c_~get_2~0.base) .cse0) 4294967296))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_137|) 0)))))) is different from false [2024-11-19 14:03:56,751 INFO L124 PetriNetUnfolderBase]: 9910/18809 cut-off events. [2024-11-19 14:03:56,751 INFO L125 PetriNetUnfolderBase]: For 52803/54236 co-relation queries the response was YES. [2024-11-19 14:03:56,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60753 conditions, 18809 events. 9910/18809 cut-off events. For 52803/54236 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 165610 event pairs, 2712 based on Foata normal form. 620/18251 useless extension candidates. Maximal degree in co-relation 60711. Up to 3983 conditions per place. [2024-11-19 14:03:56,894 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 370 selfloop transitions, 61 changer transitions 0/473 dead transitions. [2024-11-19 14:03:56,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 473 transitions, 4604 flow [2024-11-19 14:03:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:03:56,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:03:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 921 transitions. [2024-11-19 14:03:56,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43158388003748827 [2024-11-19 14:03:56,896 INFO L175 Difference]: Start difference. First operand has 215 places, 256 transitions, 2268 flow. Second operand 22 states and 921 transitions. [2024-11-19 14:03:56,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 473 transitions, 4604 flow [2024-11-19 14:03:57,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 473 transitions, 4443 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-11-19 14:03:57,077 INFO L231 Difference]: Finished difference. Result has 222 places, 259 transitions, 2310 flow [2024-11-19 14:03:57,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2140, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2310, PETRI_PLACES=222, PETRI_TRANSITIONS=259} [2024-11-19 14:03:57,078 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 131 predicate places. [2024-11-19 14:03:57,078 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 259 transitions, 2310 flow [2024-11-19 14:03:57,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 35.391304347826086) internal successors, (814), 23 states have internal predecessors, (814), 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) [2024-11-19 14:03:57,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:57,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:57,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 14:03:57,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 14:03:57,279 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:57,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -726901983, now seen corresponding path program 1 times [2024-11-19 14:03:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495289482] [2024-11-19 14:03:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:03:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495289482] [2024-11-19 14:03:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495289482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:57,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 14:03:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751148918] [2024-11-19 14:03:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:57,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:57,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:03:57,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-19 14:03:57,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 259 transitions, 2310 flow. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2024-11-19 14:03:57,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:57,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-19 14:03:57,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:59,538 INFO L124 PetriNetUnfolderBase]: 7339/15161 cut-off events. [2024-11-19 14:03:59,538 INFO L125 PetriNetUnfolderBase]: For 34077/34391 co-relation queries the response was YES. [2024-11-19 14:03:59,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48068 conditions, 15161 events. 7339/15161 cut-off events. For 34077/34391 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 139007 event pairs, 2793 based on Foata normal form. 388/14881 useless extension candidates. Maximal degree in co-relation 48024. Up to 6502 conditions per place. [2024-11-19 14:03:59,656 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 274 selfloop transitions, 38 changer transitions 10/356 dead transitions. [2024-11-19 14:03:59,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 356 transitions, 3520 flow [2024-11-19 14:03:59,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:03:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:03:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2024-11-19 14:03:59,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6374570446735395 [2024-11-19 14:03:59,657 INFO L175 Difference]: Start difference. First operand has 222 places, 259 transitions, 2310 flow. Second operand 6 states and 371 transitions. [2024-11-19 14:03:59,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 356 transitions, 3520 flow [2024-11-19 14:03:59,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 356 transitions, 3301 flow, removed 12 selfloop flow, removed 19 redundant places. [2024-11-19 14:03:59,827 INFO L231 Difference]: Finished difference. Result has 210 places, 256 transitions, 2223 flow [2024-11-19 14:03:59,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2223, PETRI_PLACES=210, PETRI_TRANSITIONS=256} [2024-11-19 14:03:59,828 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 119 predicate places. [2024-11-19 14:03:59,829 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 256 transitions, 2223 flow [2024-11-19 14:03:59,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 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) [2024-11-19 14:03:59,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:59,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:59,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 14:03:59,830 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:03:59,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 969999588, now seen corresponding path program 1 times [2024-11-19 14:03:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:59,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317189081] [2024-11-19 14:03:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:59,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:03:59,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317189081] [2024-11-19 14:03:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317189081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:59,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:59,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48455591] [2024-11-19 14:03:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:59,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:59,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:59,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-19 14:03:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 256 transitions, 2223 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-19 14:03:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:59,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-19 14:03:59,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:01,334 INFO L124 PetriNetUnfolderBase]: 6324/14764 cut-off events. [2024-11-19 14:04:01,334 INFO L125 PetriNetUnfolderBase]: For 42633/43085 co-relation queries the response was YES. [2024-11-19 14:04:01,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45545 conditions, 14764 events. 6324/14764 cut-off events. For 42633/43085 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 147972 event pairs, 2502 based on Foata normal form. 367/14132 useless extension candidates. Maximal degree in co-relation 45503. Up to 5903 conditions per place. [2024-11-19 14:04:01,424 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 341 selfloop transitions, 11 changer transitions 0/396 dead transitions. [2024-11-19 14:04:01,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 396 transitions, 4249 flow [2024-11-19 14:04:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-11-19 14:04:01,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6675257731958762 [2024-11-19 14:04:01,429 INFO L175 Difference]: Start difference. First operand has 210 places, 256 transitions, 2223 flow. Second operand 4 states and 259 transitions. [2024-11-19 14:04:01,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 396 transitions, 4249 flow [2024-11-19 14:04:01,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 396 transitions, 4136 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-19 14:04:01,577 INFO L231 Difference]: Finished difference. Result has 210 places, 253 transitions, 2174 flow [2024-11-19 14:04:01,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2174, PETRI_PLACES=210, PETRI_TRANSITIONS=253} [2024-11-19 14:04:01,578 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 119 predicate places. [2024-11-19 14:04:01,578 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 253 transitions, 2174 flow [2024-11-19 14:04:01,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-19 14:04:01,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:01,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:01,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 14:04:01,578 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:01,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash 969998563, now seen corresponding path program 1 times [2024-11-19 14:04:01,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:01,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368611707] [2024-11-19 14:04:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:01,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:04:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368611707] [2024-11-19 14:04:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368611707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136898209] [2024-11-19 14:04:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:02,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:02,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:02,149 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) [2024-11-19 14:04:02,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:04:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:02,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:04:02,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:02,277 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 [2024-11-19 14:04:02,484 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:04:02,485 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 25 treesize of output 12 [2024-11-19 14:04:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:04:02,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:02,590 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 20 treesize of output 18 [2024-11-19 14:04:02,592 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 26 treesize of output 20 [2024-11-19 14:04:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:04:02,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136898209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:02,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:02,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 14:04:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573542003] [2024-11-19 14:04:02,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:02,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 14:04:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:02,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 14:04:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-19 14:04:02,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 97 [2024-11-19 14:04:02,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 253 transitions, 2174 flow. Second operand has 19 states, 19 states have (on average 39.36842105263158) internal successors, (748), 19 states have internal predecessors, (748), 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) [2024-11-19 14:04:02,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:02,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 97 [2024-11-19 14:04:02,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:05,859 INFO L124 PetriNetUnfolderBase]: 8500/16312 cut-off events. [2024-11-19 14:04:05,859 INFO L125 PetriNetUnfolderBase]: For 48899/49785 co-relation queries the response was YES. [2024-11-19 14:04:05,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53411 conditions, 16312 events. 8500/16312 cut-off events. For 48899/49785 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 141937 event pairs, 2013 based on Foata normal form. 270/15954 useless extension candidates. Maximal degree in co-relation 53369. Up to 2664 conditions per place. [2024-11-19 14:04:05,977 INFO L140 encePairwiseOnDemand]: 82/97 looper letters, 797 selfloop transitions, 78 changer transitions 10/926 dead transitions. [2024-11-19 14:04:05,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 926 transitions, 8846 flow [2024-11-19 14:04:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:04:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:04:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1073 transitions. [2024-11-19 14:04:05,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028116213683224 [2024-11-19 14:04:05,980 INFO L175 Difference]: Start difference. First operand has 210 places, 253 transitions, 2174 flow. Second operand 22 states and 1073 transitions. [2024-11-19 14:04:05,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 926 transitions, 8846 flow [2024-11-19 14:04:06,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 926 transitions, 8798 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:04:06,273 INFO L231 Difference]: Finished difference. Result has 235 places, 277 transitions, 2545 flow [2024-11-19 14:04:06,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2545, PETRI_PLACES=235, PETRI_TRANSITIONS=277} [2024-11-19 14:04:06,274 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 144 predicate places. [2024-11-19 14:04:06,274 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 277 transitions, 2545 flow [2024-11-19 14:04:06,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.36842105263158) internal successors, (748), 19 states have internal predecessors, (748), 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) [2024-11-19 14:04:06,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:06,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:06,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 14:04:06,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:06,475 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:06,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash 5185519, now seen corresponding path program 1 times [2024-11-19 14:04:06,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:06,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896188846] [2024-11-19 14:04:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:06,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:04:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896188846] [2024-11-19 14:04:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896188846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989185574] [2024-11-19 14:04:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:06,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:06,765 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) [2024-11-19 14:04:06,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:04:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:06,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 14:04:06,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:06,886 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 [2024-11-19 14:04:06,988 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 15 treesize of output 7 [2024-11-19 14:04:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:04:07,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:07,094 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 18 treesize of output 16 [2024-11-19 14:04:07,097 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 22 treesize of output 16 [2024-11-19 14:04:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:04:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989185574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:07,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:07,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-19 14:04:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612030064] [2024-11-19 14:04:07,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:07,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 14:04:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:07,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 14:04:07,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-19 14:04:07,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 97 [2024-11-19 14:04:07,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 277 transitions, 2545 flow. Second operand has 18 states, 18 states have (on average 39.77777777777778) internal successors, (716), 18 states have internal predecessors, (716), 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) [2024-11-19 14:04:07,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:07,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 97 [2024-11-19 14:04:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:09,952 INFO L124 PetriNetUnfolderBase]: 7484/15076 cut-off events. [2024-11-19 14:04:09,952 INFO L125 PetriNetUnfolderBase]: For 50071/50845 co-relation queries the response was YES. [2024-11-19 14:04:10,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52000 conditions, 15076 events. 7484/15076 cut-off events. For 50071/50845 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 135409 event pairs, 2327 based on Foata normal form. 767/15316 useless extension candidates. Maximal degree in co-relation 51951. Up to 3252 conditions per place. [2024-11-19 14:04:10,075 INFO L140 encePairwiseOnDemand]: 79/97 looper letters, 700 selfloop transitions, 83 changer transitions 160/989 dead transitions. [2024-11-19 14:04:10,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 989 transitions, 9693 flow [2024-11-19 14:04:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 14:04:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 14:04:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1180 transitions. [2024-11-19 14:04:10,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506872852233677 [2024-11-19 14:04:10,078 INFO L175 Difference]: Start difference. First operand has 235 places, 277 transitions, 2545 flow. Second operand 24 states and 1180 transitions. [2024-11-19 14:04:10,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 989 transitions, 9693 flow [2024-11-19 14:04:10,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 989 transitions, 9616 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-19 14:04:10,242 INFO L231 Difference]: Finished difference. Result has 259 places, 297 transitions, 2837 flow [2024-11-19 14:04:10,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2837, PETRI_PLACES=259, PETRI_TRANSITIONS=297} [2024-11-19 14:04:10,250 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 168 predicate places. [2024-11-19 14:04:10,250 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 297 transitions, 2837 flow [2024-11-19 14:04:10,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 39.77777777777778) internal successors, (716), 18 states have internal predecessors, (716), 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) [2024-11-19 14:04:10,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:10,251 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:10,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 14:04:10,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 14:04:10,452 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:10,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash -905004743, now seen corresponding path program 2 times [2024-11-19 14:04:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735248327] [2024-11-19 14:04:10,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:10,473 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:10,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:10,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735248327] [2024-11-19 14:04:10,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735248327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:10,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930838630] [2024-11-19 14:04:10,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:10,627 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) [2024-11-19 14:04:10,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 14:04:10,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:10,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:10,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 14:04:10,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:10,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930838630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:10,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-19 14:04:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142312899] [2024-11-19 14:04:10,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:10,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:04:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:04:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2024-11-19 14:04:11,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-19 14:04:11,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 297 transitions, 2837 flow. Second operand has 28 states, 28 states have (on average 42.785714285714285) internal successors, (1198), 28 states have internal predecessors, (1198), 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) [2024-11-19 14:04:11,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:11,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-19 14:04:11,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:13,358 INFO L124 PetriNetUnfolderBase]: 4598/11501 cut-off events. [2024-11-19 14:04:13,359 INFO L125 PetriNetUnfolderBase]: For 41622/42032 co-relation queries the response was YES. [2024-11-19 14:04:13,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41564 conditions, 11501 events. 4598/11501 cut-off events. For 41622/42032 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 111040 event pairs, 3482 based on Foata normal form. 172/11399 useless extension candidates. Maximal degree in co-relation 41507. Up to 2729 conditions per place. [2024-11-19 14:04:13,437 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 240 selfloop transitions, 137 changer transitions 0/444 dead transitions. [2024-11-19 14:04:13,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 444 transitions, 4444 flow [2024-11-19 14:04:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 14:04:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 14:04:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 940 transitions. [2024-11-19 14:04:13,438 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4845360824742268 [2024-11-19 14:04:13,439 INFO L175 Difference]: Start difference. First operand has 259 places, 297 transitions, 2837 flow. Second operand 20 states and 940 transitions. [2024-11-19 14:04:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 444 transitions, 4444 flow [2024-11-19 14:04:13,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 444 transitions, 4391 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-19 14:04:13,643 INFO L231 Difference]: Finished difference. Result has 274 places, 365 transitions, 3532 flow [2024-11-19 14:04:13,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3532, PETRI_PLACES=274, PETRI_TRANSITIONS=365} [2024-11-19 14:04:13,644 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 183 predicate places. [2024-11-19 14:04:13,644 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 365 transitions, 3532 flow [2024-11-19 14:04:13,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 42.785714285714285) internal successors, (1198), 28 states have internal predecessors, (1198), 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) [2024-11-19 14:04:13,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:13,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:13,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 14:04:13,846 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,SelfDestructingSolverStorable28 [2024-11-19 14:04:13,846 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:13,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1108069321, now seen corresponding path program 1 times [2024-11-19 14:04:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:13,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503563560] [2024-11-19 14:04:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 14:04:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503563560] [2024-11-19 14:04:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503563560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047448630] [2024-11-19 14:04:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:13,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:13,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:13,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:13,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:13,912 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-19 14:04:13,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 365 transitions, 3532 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-19 14:04:13,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:13,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-19 14:04:13,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:15,539 INFO L124 PetriNetUnfolderBase]: 6302/13448 cut-off events. [2024-11-19 14:04:15,539 INFO L125 PetriNetUnfolderBase]: For 49183/49861 co-relation queries the response was YES. [2024-11-19 14:04:15,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49022 conditions, 13448 events. 6302/13448 cut-off events. For 49183/49861 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 118659 event pairs, 2607 based on Foata normal form. 417/13638 useless extension candidates. Maximal degree in co-relation 48962. Up to 5867 conditions per place. [2024-11-19 14:04:15,634 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 331 selfloop transitions, 16 changer transitions 102/498 dead transitions. [2024-11-19 14:04:15,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 498 transitions, 5630 flow [2024-11-19 14:04:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2024-11-19 14:04:15,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6623711340206185 [2024-11-19 14:04:15,639 INFO L175 Difference]: Start difference. First operand has 274 places, 365 transitions, 3532 flow. Second operand 4 states and 257 transitions. [2024-11-19 14:04:15,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 498 transitions, 5630 flow [2024-11-19 14:04:15,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 498 transitions, 5474 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-19 14:04:15,855 INFO L231 Difference]: Finished difference. Result has 265 places, 298 transitions, 2819 flow [2024-11-19 14:04:15,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2819, PETRI_PLACES=265, PETRI_TRANSITIONS=298} [2024-11-19 14:04:15,859 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 174 predicate places. [2024-11-19 14:04:15,859 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 298 transitions, 2819 flow [2024-11-19 14:04:15,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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) [2024-11-19 14:04:15,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:15,860 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:15,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 14:04:15,860 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:15,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2017879140, now seen corresponding path program 1 times [2024-11-19 14:04:15,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:15,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100900288] [2024-11-19 14:04:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:04:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:04:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 14:04:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100900288] [2024-11-19 14:04:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100900288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:16,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:04:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:04:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876074326] [2024-11-19 14:04:16,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:16,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:04:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:04:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:04:16,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-19 14:04:16,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 298 transitions, 2819 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-11-19 14:04:16,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:16,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-19 14:04:16,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:17,306 INFO L124 PetriNetUnfolderBase]: 3689/8344 cut-off events. [2024-11-19 14:04:17,306 INFO L125 PetriNetUnfolderBase]: For 32787/33345 co-relation queries the response was YES. [2024-11-19 14:04:17,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31696 conditions, 8344 events. 3689/8344 cut-off events. For 32787/33345 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 71280 event pairs, 1274 based on Foata normal form. 246/8545 useless extension candidates. Maximal degree in co-relation 31635. Up to 3198 conditions per place. [2024-11-19 14:04:17,361 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 321 selfloop transitions, 22 changer transitions 0/389 dead transitions. [2024-11-19 14:04:17,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 389 transitions, 4293 flow [2024-11-19 14:04:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:04:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:04:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2024-11-19 14:04:17,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6701030927835051 [2024-11-19 14:04:17,363 INFO L175 Difference]: Start difference. First operand has 265 places, 298 transitions, 2819 flow. Second operand 4 states and 260 transitions. [2024-11-19 14:04:17,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 389 transitions, 4293 flow [2024-11-19 14:04:17,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 389 transitions, 4191 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-19 14:04:17,470 INFO L231 Difference]: Finished difference. Result has 261 places, 295 transitions, 2785 flow [2024-11-19 14:04:17,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2785, PETRI_PLACES=261, PETRI_TRANSITIONS=295} [2024-11-19 14:04:17,471 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 170 predicate places. [2024-11-19 14:04:17,471 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 295 transitions, 2785 flow [2024-11-19 14:04:17,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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) [2024-11-19 14:04:17,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:17,471 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:17,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 14:04:17,472 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:17,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2017880165, now seen corresponding path program 2 times [2024-11-19 14:04:17,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:17,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888023608] [2024-11-19 14:04:17,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:17,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:17,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:17,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888023608] [2024-11-19 14:04:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888023608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48969637] [2024-11-19 14:04:17,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:17,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:17,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:17,692 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) [2024-11-19 14:04:17,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 14:04:17,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:17,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:17,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 14:04:17,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:17,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:18,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48969637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:18,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:18,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-19 14:04:18,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599585216] [2024-11-19 14:04:18,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:18,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 14:04:18,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 14:04:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-19 14:04:18,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-11-19 14:04:18,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 295 transitions, 2785 flow. Second operand has 28 states, 28 states have (on average 42.92857142857143) internal successors, (1202), 28 states have internal predecessors, (1202), 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) [2024-11-19 14:04:18,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-11-19 14:04:18,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:19,560 INFO L124 PetriNetUnfolderBase]: 2984/7408 cut-off events. [2024-11-19 14:04:19,560 INFO L125 PetriNetUnfolderBase]: For 28114/28540 co-relation queries the response was YES. [2024-11-19 14:04:19,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27776 conditions, 7408 events. 2984/7408 cut-off events. For 28114/28540 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 65120 event pairs, 2174 based on Foata normal form. 165/7497 useless extension candidates. Maximal degree in co-relation 27717. Up to 2744 conditions per place. [2024-11-19 14:04:19,635 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 193 selfloop transitions, 105 changer transitions 46/399 dead transitions. [2024-11-19 14:04:19,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 399 transitions, 4187 flow [2024-11-19 14:04:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 14:04:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 14:04:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 948 transitions. [2024-11-19 14:04:19,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.488659793814433 [2024-11-19 14:04:19,639 INFO L175 Difference]: Start difference. First operand has 261 places, 295 transitions, 2785 flow. Second operand 20 states and 948 transitions. [2024-11-19 14:04:19,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 399 transitions, 4187 flow [2024-11-19 14:04:19,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 399 transitions, 4143 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-19 14:04:19,743 INFO L231 Difference]: Finished difference. Result has 280 places, 315 transitions, 3208 flow [2024-11-19 14:04:19,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3208, PETRI_PLACES=280, PETRI_TRANSITIONS=315} [2024-11-19 14:04:19,744 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 189 predicate places. [2024-11-19 14:04:19,744 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 315 transitions, 3208 flow [2024-11-19 14:04:19,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 42.92857142857143) internal successors, (1202), 28 states have internal predecessors, (1202), 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) [2024-11-19 14:04:19,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:19,745 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:19,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 14:04:19,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:19,946 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:19,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash -995850439, now seen corresponding path program 3 times [2024-11-19 14:04:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417939115] [2024-11-19 14:04:19,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:04:19,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:19,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:04:19,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 14:04:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417939115] [2024-11-19 14:04:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417939115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41628894] [2024-11-19 14:04:20,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:04:20,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:20,286 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) [2024-11-19 14:04:20,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 14:04:20,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:04:20,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:20,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 14:04:20,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:20,424 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 [2024-11-19 14:04:20,512 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 23 treesize of output 7 [2024-11-19 14:04:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 14:04:20,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:04:20,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41628894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:04:20,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:04:20,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-11-19 14:04:20,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220678586] [2024-11-19 14:04:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:04:20,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 14:04:20,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 14:04:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:04:20,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 97 [2024-11-19 14:04:20,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 315 transitions, 3208 flow. Second operand has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 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) [2024-11-19 14:04:20,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:20,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 97 [2024-11-19 14:04:20,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:21,709 INFO L124 PetriNetUnfolderBase]: 3037/7243 cut-off events. [2024-11-19 14:04:21,709 INFO L125 PetriNetUnfolderBase]: For 27317/27791 co-relation queries the response was YES. [2024-11-19 14:04:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27044 conditions, 7243 events. 3037/7243 cut-off events. For 27317/27791 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 62258 event pairs, 650 based on Foata normal form. 235/7470 useless extension candidates. Maximal degree in co-relation 26983. Up to 2924 conditions per place. [2024-11-19 14:04:21,760 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 249 selfloop transitions, 59 changer transitions 0/359 dead transitions. [2024-11-19 14:04:21,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 359 transitions, 4183 flow [2024-11-19 14:04:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:04:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:04:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 405 transitions. [2024-11-19 14:04:21,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964653902798233 [2024-11-19 14:04:21,761 INFO L175 Difference]: Start difference. First operand has 280 places, 315 transitions, 3208 flow. Second operand 7 states and 405 transitions. [2024-11-19 14:04:21,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 359 transitions, 4183 flow [2024-11-19 14:04:21,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 359 transitions, 4031 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-19 14:04:21,854 INFO L231 Difference]: Finished difference. Result has 271 places, 312 transitions, 3151 flow [2024-11-19 14:04:21,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3151, PETRI_PLACES=271, PETRI_TRANSITIONS=312} [2024-11-19 14:04:21,855 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 180 predicate places. [2024-11-19 14:04:21,855 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 312 transitions, 3151 flow [2024-11-19 14:04:21,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.285714285714285) internal successors, (373), 7 states have internal predecessors, (373), 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) [2024-11-19 14:04:21,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:21,855 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:21,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 14:04:22,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:22,059 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:22,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash -806623202, now seen corresponding path program 2 times [2024-11-19 14:04:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:22,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446311119] [2024-11-19 14:04:22,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:22,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:22,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 14:04:22,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:22,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446311119] [2024-11-19 14:04:22,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446311119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834472681] [2024-11-19 14:04:22,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:22,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:22,597 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) [2024-11-19 14:04:22,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 14:04:22,734 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:22,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:22,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 14:04:22,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:22,854 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 [2024-11-19 14:04:23,261 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 14:04:23,262 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 25 treesize of output 12 [2024-11-19 14:04:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:23,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:23,539 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 20 treesize of output 18 [2024-11-19 14:04:23,542 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 26 treesize of output 20 [2024-11-19 14:04:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:23,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834472681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:23,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 17] total 37 [2024-11-19 14:04:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174025557] [2024-11-19 14:04:23,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:23,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-19 14:04:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-19 14:04:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 14:04:24,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 97 [2024-11-19 14:04:24,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 312 transitions, 3151 flow. Second operand has 38 states, 38 states have (on average 37.89473684210526) internal successors, (1440), 38 states have internal predecessors, (1440), 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) [2024-11-19 14:04:24,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:24,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 97 [2024-11-19 14:04:24,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:27,274 INFO L124 PetriNetUnfolderBase]: 4957/11385 cut-off events. [2024-11-19 14:04:27,274 INFO L125 PetriNetUnfolderBase]: For 46339/47267 co-relation queries the response was YES. [2024-11-19 14:04:27,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42942 conditions, 11385 events. 4957/11385 cut-off events. For 46339/47267 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 103650 event pairs, 1040 based on Foata normal form. 471/11846 useless extension candidates. Maximal degree in co-relation 42881. Up to 1836 conditions per place. [2024-11-19 14:04:27,358 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 309 selfloop transitions, 96 changer transitions 25/479 dead transitions. [2024-11-19 14:04:27,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 479 transitions, 5237 flow [2024-11-19 14:04:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 14:04:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 14:04:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 943 transitions. [2024-11-19 14:04:27,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44189315838800375 [2024-11-19 14:04:27,360 INFO L175 Difference]: Start difference. First operand has 271 places, 312 transitions, 3151 flow. Second operand 22 states and 943 transitions. [2024-11-19 14:04:27,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 479 transitions, 5237 flow [2024-11-19 14:04:27,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 479 transitions, 5087 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:04:27,553 INFO L231 Difference]: Finished difference. Result has 285 places, 318 transitions, 3295 flow [2024-11-19 14:04:27,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3295, PETRI_PLACES=285, PETRI_TRANSITIONS=318} [2024-11-19 14:04:27,554 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 194 predicate places. [2024-11-19 14:04:27,554 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 318 transitions, 3295 flow [2024-11-19 14:04:27,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 37.89473684210526) internal successors, (1440), 38 states have internal predecessors, (1440), 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) [2024-11-19 14:04:27,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:27,554 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:27,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 14:04:27,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:27,755 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:27,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2061947131, now seen corresponding path program 3 times [2024-11-19 14:04:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:27,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854785371] [2024-11-19 14:04:27,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:04:27,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:27,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:04:27,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854785371] [2024-11-19 14:04:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854785371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043200911] [2024-11-19 14:04:28,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 14:04:28,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:28,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:28,076 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) [2024-11-19 14:04:28,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 14:04:28,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 14:04:28,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:28,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 14:04:28,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:28,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:04:28,238 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 [2024-11-19 14:04:28,316 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:04:28,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:04:28,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-19 14:04:28,360 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 25 treesize of output 9 [2024-11-19 14:04:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:28,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:28,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:04:28,553 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-19 14:04:28,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:04:28,564 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 48 treesize of output 41 [2024-11-19 14:04:28,567 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 15 treesize of output 9 [2024-11-19 14:04:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043200911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:28,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:28,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-19 14:04:28,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342808700] [2024-11-19 14:04:28,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:28,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 14:04:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:28,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 14:04:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=316, Unknown=8, NotChecked=0, Total=380 [2024-11-19 14:04:30,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-19 14:04:30,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 318 transitions, 3295 flow. Second operand has 20 states, 20 states have (on average 32.7) internal successors, (654), 20 states have internal predecessors, (654), 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) [2024-11-19 14:04:30,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:30,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-19 14:04:30,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:32,294 INFO L124 PetriNetUnfolderBase]: 6815/13061 cut-off events. [2024-11-19 14:04:32,294 INFO L125 PetriNetUnfolderBase]: For 43839/45195 co-relation queries the response was YES. [2024-11-19 14:04:32,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48288 conditions, 13061 events. 6815/13061 cut-off events. For 43839/45195 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 106762 event pairs, 1040 based on Foata normal form. 762/13781 useless extension candidates. Maximal degree in co-relation 48226. Up to 3912 conditions per place. [2024-11-19 14:04:32,502 INFO L140 encePairwiseOnDemand]: 83/97 looper letters, 390 selfloop transitions, 99 changer transitions 0/523 dead transitions. [2024-11-19 14:04:32,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 523 transitions, 5817 flow [2024-11-19 14:04:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 14:04:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 14:04:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 507 transitions. [2024-11-19 14:04:32,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4020618556701031 [2024-11-19 14:04:32,503 INFO L175 Difference]: Start difference. First operand has 285 places, 318 transitions, 3295 flow. Second operand 13 states and 507 transitions. [2024-11-19 14:04:32,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 523 transitions, 5817 flow [2024-11-19 14:04:32,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 523 transitions, 5639 flow, removed 7 selfloop flow, removed 20 redundant places. [2024-11-19 14:04:32,722 INFO L231 Difference]: Finished difference. Result has 276 places, 316 transitions, 3323 flow [2024-11-19 14:04:32,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3323, PETRI_PLACES=276, PETRI_TRANSITIONS=316} [2024-11-19 14:04:32,723 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 185 predicate places. [2024-11-19 14:04:32,723 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 316 transitions, 3323 flow [2024-11-19 14:04:32,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 32.7) internal successors, (654), 20 states have internal predecessors, (654), 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) [2024-11-19 14:04:32,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:32,723 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:32,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 14:04:32,924 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,SelfDestructingSolverStorable34 [2024-11-19 14:04:32,924 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:32,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1005687967, now seen corresponding path program 2 times [2024-11-19 14:04:32,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:32,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140657659] [2024-11-19 14:04:32,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:32,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:32,956 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:32,956 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140657659] [2024-11-19 14:04:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140657659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427350157] [2024-11-19 14:04:33,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:33,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:33,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:33,336 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) [2024-11-19 14:04:33,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 14:04:33,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:33,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:33,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 14:04:33,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:33,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:04:33,510 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 [2024-11-19 14:04:33,608 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:04:33,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:04:33,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-19 14:04:33,678 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 23 treesize of output 7 [2024-11-19 14:04:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:33,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:33,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:04:33,881 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-19 14:04:33,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:04:33,889 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 42 treesize of output 35 [2024-11-19 14:04:33,893 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 13 treesize of output 7 [2024-11-19 14:04:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427350157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:33,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-19 14:04:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656413246] [2024-11-19 14:04:33,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:33,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 14:04:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 14:04:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=388, Unknown=4, NotChecked=0, Total=462 [2024-11-19 14:04:34,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 97 [2024-11-19 14:04:34,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 316 transitions, 3323 flow. Second operand has 22 states, 22 states have (on average 35.95454545454545) internal successors, (791), 22 states have internal predecessors, (791), 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) [2024-11-19 14:04:34,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:34,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 97 [2024-11-19 14:04:34,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:04:37,015 INFO L124 PetriNetUnfolderBase]: 7379/14029 cut-off events. [2024-11-19 14:04:37,015 INFO L125 PetriNetUnfolderBase]: For 64272/65004 co-relation queries the response was YES. [2024-11-19 14:04:37,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54246 conditions, 14029 events. 7379/14029 cut-off events. For 64272/65004 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 114088 event pairs, 1104 based on Foata normal form. 243/14249 useless extension candidates. Maximal degree in co-relation 54189. Up to 9158 conditions per place. [2024-11-19 14:04:37,273 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 273 selfloop transitions, 68 changer transitions 0/374 dead transitions. [2024-11-19 14:04:37,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 374 transitions, 4614 flow [2024-11-19 14:04:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:04:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:04:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 351 transitions. [2024-11-19 14:04:37,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4020618556701031 [2024-11-19 14:04:37,275 INFO L175 Difference]: Start difference. First operand has 276 places, 316 transitions, 3323 flow. Second operand 9 states and 351 transitions. [2024-11-19 14:04:37,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 374 transitions, 4614 flow [2024-11-19 14:04:37,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 374 transitions, 4327 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-19 14:04:37,580 INFO L231 Difference]: Finished difference. Result has 269 places, 313 transitions, 3230 flow [2024-11-19 14:04:37,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3230, PETRI_PLACES=269, PETRI_TRANSITIONS=313} [2024-11-19 14:04:37,581 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 178 predicate places. [2024-11-19 14:04:37,581 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 313 transitions, 3230 flow [2024-11-19 14:04:37,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 35.95454545454545) internal successors, (791), 22 states have internal predecessors, (791), 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) [2024-11-19 14:04:37,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:04:37,582 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:04:37,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 14:04:37,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-19 14:04:37,787 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-19 14:04:37,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:04:37,787 INFO L85 PathProgramCache]: Analyzing trace with hash -504147263, now seen corresponding path program 2 times [2024-11-19 14:04:37,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:04:37,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451208297] [2024-11-19 14:04:37,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:37,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:04:37,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:37,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 14:04:38,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:04:38,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451208297] [2024-11-19 14:04:38,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451208297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:04:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230581813] [2024-11-19 14:04:38,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:04:38,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:04:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:04:38,297 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:04:38,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 14:04:38,421 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:04:38,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:04:38,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-19 14:04:38,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:04:38,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 14:04:38,550 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 [2024-11-19 14:04:38,655 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 14:04:38,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 14:04:38,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 14:04:38,883 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 15 treesize of output 7 [2024-11-19 14:04:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:04:38,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:04:38,985 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_930 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_930) c_~get_2~0.base) (+ (* c_~id_0~0 4) c_~get_2~0.offset)) 2147483648)) is different from false [2024-11-19 14:04:39,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:04:39,107 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-19 14:04:39,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 14:04:39,116 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 41 treesize of output 33 [2024-11-19 14:04:39,119 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 13 treesize of output 7 [2024-11-19 14:04:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 1 not checked. [2024-11-19 14:04:39,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230581813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:04:39,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:04:39,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 14] total 35 [2024-11-19 14:04:39,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137629271] [2024-11-19 14:04:39,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:04:39,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-19 14:04:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:04:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-19 14:04:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1053, Unknown=1, NotChecked=66, Total=1260 [2024-11-19 14:04:39,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 97 [2024-11-19 14:04:39,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 313 transitions, 3230 flow. Second operand has 36 states, 36 states have (on average 26.444444444444443) internal successors, (952), 36 states have internal predecessors, (952), 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) [2024-11-19 14:04:39,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:04:39,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 97 [2024-11-19 14:04:39,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand