./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-max.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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:48:21,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:48:21,775 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:48:21,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:48:21,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:48:21,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:48:21,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:48:21,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:48:21,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:48:21,815 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:48:21,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:48:21,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:48:21,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:48:21,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:48:21,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:48:21,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:48:21,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:48:21,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:48:21,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:48:21,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:48:21,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:48:21,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:48:21,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:48:21,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:48:21,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:48:21,822 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:48:21,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:48:21,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:48:21,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:48:21,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:48:21,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:48:21,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:48:21,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:48:21,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:48:21,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:48:21,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:48:21,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:48:21,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:48:21,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:48:21,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:48:21,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:48:21,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:48:21,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:48:21,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:48:21,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-11-12 20:48:22,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:48:22,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:48:22,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:48:22,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:48:22,108 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:48:22,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-12 20:48:23,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:48:23,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:48:23,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-11-12 20:48:23,816 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35a821ad/fdc908d87a2d4874a9a2a2e136802777/FLAGbfc1cc61a [2024-11-12 20:48:23,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35a821ad/fdc908d87a2d4874a9a2a2e136802777 [2024-11-12 20:48:23,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:48:23,839 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:48:23,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:48:23,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:48:23,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:48:23,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:48:23" (1/1) ... [2024-11-12 20:48:23,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dac7b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:23, skipping insertion in model container [2024-11-12 20:48:23,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:48:23" (1/1) ... [2024-11-12 20:48:23,877 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:48:24,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:48:24,110 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:48:24,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:48:24,192 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:48:24,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24 WrapperNode [2024-11-12 20:48:24,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:48:24,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:48:24,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:48:24,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:48:24,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,240 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 276 [2024-11-12 20:48:24,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:48:24,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:48:24,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:48:24,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:48:24,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,274 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-12 20:48:24,275 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:48:24,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:48:24,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:48:24,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:48:24,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (1/1) ... [2024-11-12 20:48:24,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:48:24,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:24,340 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) [2024-11-12 20:48:24,346 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 [2024-11-12 20:48:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:48:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:48:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:48:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:48:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:48:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:48:24,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:48:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:48:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:48:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:48:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:48:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:48:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:48:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:48:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:48:24,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:48:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:48:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:48:24,401 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:48:24,555 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:48:24,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:48:25,105 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:48:25,106 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:48:25,561 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:48:25,562 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-12 20:48:25,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:48:25 BoogieIcfgContainer [2024-11-12 20:48:25,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:48:25,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:48:25,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:48:25,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:48:25,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:48:23" (1/3) ... [2024-11-12 20:48:25,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426779a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:48:25, skipping insertion in model container [2024-11-12 20:48:25,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24" (2/3) ... [2024-11-12 20:48:25,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426779a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:48:25, skipping insertion in model container [2024-11-12 20:48:25,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:48:25" (3/3) ... [2024-11-12 20:48:25,572 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-11-12 20:48:25,588 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:48:25,589 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-12 20:48:25,589 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:48:25,688 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-12 20:48:25,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 231 flow [2024-11-12 20:48:25,775 INFO L124 PetriNetUnfolderBase]: 11/102 cut-off events. [2024-11-12 20:48:25,775 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 20:48:25,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 11/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 250 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-12 20:48:25,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 231 flow [2024-11-12 20:48:25,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 220 flow [2024-11-12 20:48:25,792 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:48:25,797 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;@793aa017, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:48:25,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-11-12 20:48:25,800 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:48:25,801 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:48:25,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:48:25,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:25,802 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:48:25,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:25,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1041504, now seen corresponding path program 1 times [2024-11-12 20:48:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:25,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17278623] [2024-11-12 20:48:25,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17278623] [2024-11-12 20:48:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17278623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:26,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:48:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153753088] [2024-11-12 20:48:26,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:26,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:26,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:26,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:26,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-12 20:48:26,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:26,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:26,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:26,779 INFO L124 PetriNetUnfolderBase]: 1153/2343 cut-off events. [2024-11-12 20:48:26,780 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-12 20:48:26,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 2343 events. 1153/2343 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16172 event pairs, 826 based on Foata normal form. 3/1752 useless extension candidates. Maximal degree in co-relation 3589. Up to 1545 conditions per place. [2024-11-12 20:48:26,827 INFO L140 encePairwiseOnDemand]: 87/105 looper letters, 52 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-11-12 20:48:26,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 358 flow [2024-11-12 20:48:26,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-11-12 20:48:26,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-12 20:48:26,847 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 220 flow. Second operand 4 states and 266 transitions. [2024-11-12 20:48:26,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 358 flow [2024-11-12 20:48:26,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-12 20:48:26,861 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 292 flow [2024-11-12 20:48:26,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-11-12 20:48:26,868 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2024-11-12 20:48:26,868 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 292 flow [2024-11-12 20:48:26,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-12 20:48:26,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:26,869 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:48:26,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:48:26,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:26,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash 963766068, now seen corresponding path program 1 times [2024-11-12 20:48:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:26,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690655647] [2024-11-12 20:48:26,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:26,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:27,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:27,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:27,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690655647] [2024-11-12 20:48:27,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690655647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016681026] [2024-11-12 20:48:27,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:27,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:27,033 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) [2024-11-12 20:48:27,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:48:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:27,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:48:27,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:27,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:48:27,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016681026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:27,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:48:27,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:48:27,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708096461] [2024-11-12 20:48:27,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:27,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:48:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:48:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:48:27,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:27,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2024-11-12 20:48:27,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:27,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:27,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:27,622 INFO L124 PetriNetUnfolderBase]: 1153/2340 cut-off events. [2024-11-12 20:48:27,622 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-12 20:48:27,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2340 events. 1153/2340 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16144 event pairs, 826 based on Foata normal form. 3/1754 useless extension candidates. Maximal degree in co-relation 3898. Up to 1530 conditions per place. [2024-11-12 20:48:27,635 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-11-12 20:48:27,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 398 flow [2024-11-12 20:48:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2024-11-12 20:48:27,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-12 20:48:27,638 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 292 flow. Second operand 6 states and 356 transitions. [2024-11-12 20:48:27,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 398 flow [2024-11-12 20:48:27,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:48:27,642 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 314 flow [2024-11-12 20:48:27,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-11-12 20:48:27,643 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2024-11-12 20:48:27,643 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 314 flow [2024-11-12 20:48:27,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2024-11-12 20:48:27,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:27,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:48:27,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:48:27,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:27,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:27,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 964607810, now seen corresponding path program 1 times [2024-11-12 20:48:27,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:27,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407747109] [2024-11-12 20:48:27,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:27,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:27,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407747109] [2024-11-12 20:48:27,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407747109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:27,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593394325] [2024-11-12 20:48:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:27,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:28,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-12 20:48:28,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-11-12 20:48:28,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:28,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-12 20:48:28,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:28,371 INFO L124 PetriNetUnfolderBase]: 1154/2357 cut-off events. [2024-11-12 20:48:28,372 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-12 20:48:28,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 2357 events. 1154/2357 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16166 event pairs, 826 based on Foata normal form. 4/1771 useless extension candidates. Maximal degree in co-relation 3934. Up to 1545 conditions per place. [2024-11-12 20:48:28,387 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 63 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-11-12 20:48:28,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 470 flow [2024-11-12 20:48:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-11-12 20:48:28,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-12 20:48:28,391 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 314 flow. Second operand 4 states and 242 transitions. [2024-11-12 20:48:28,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 470 flow [2024-11-12 20:48:28,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 110 transitions, 432 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-12 20:48:28,395 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 340 flow [2024-11-12 20:48:28,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-11-12 20:48:28,396 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -1 predicate places. [2024-11-12 20:48:28,396 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 340 flow [2024-11-12 20:48:28,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-11-12 20:48:28,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:28,397 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:28,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:48:28,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:28,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash -161927917, now seen corresponding path program 1 times [2024-11-12 20:48:28,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:28,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031684141] [2024-11-12 20:48:28,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:28,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:28,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:28,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031684141] [2024-11-12 20:48:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031684141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:28,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:48:28,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615970547] [2024-11-12 20:48:28,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:28,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:48:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:48:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:48:28,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-12 20:48:28,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-12 20:48:28,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:28,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-12 20:48:28,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:28,810 INFO L124 PetriNetUnfolderBase]: 1153/2356 cut-off events. [2024-11-12 20:48:28,810 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-11-12 20:48:28,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2356 events. 1153/2356 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16153 event pairs, 826 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 3946. Up to 1549 conditions per place. [2024-11-12 20:48:28,824 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-12 20:48:28,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 452 flow [2024-11-12 20:48:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:48:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:48:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-11-12 20:48:28,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-11-12 20:48:28,826 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 340 flow. Second operand 3 states and 215 transitions. [2024-11-12 20:48:28,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 452 flow [2024-11-12 20:48:28,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:48:28,832 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 340 flow [2024-11-12 20:48:28,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-12 20:48:28,833 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-11-12 20:48:28,833 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 340 flow [2024-11-12 20:48:28,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-11-12 20:48:28,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:28,835 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:48:28,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:48:28,835 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:28,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:28,836 INFO L85 PathProgramCache]: Analyzing trace with hash -188021864, now seen corresponding path program 1 times [2024-11-12 20:48:28,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:28,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140340250] [2024-11-12 20:48:28,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:28,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:28,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140340250] [2024-11-12 20:48:28,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140340250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741685336] [2024-11-12 20:48:28,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:28,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:28,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:28,913 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) [2024-11-12 20:48:28,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:48:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:28,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:48:28,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:29,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:29,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741685336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:29,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:29,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:48:29,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147631913] [2024-11-12 20:48:29,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:29,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:48:29,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:29,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:48:29,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:48:29,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:29,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 340 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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) [2024-11-12 20:48:29,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:29,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:29,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:29,492 INFO L124 PetriNetUnfolderBase]: 1162/2392 cut-off events. [2024-11-12 20:48:29,492 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-12 20:48:29,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 2392 events. 1162/2392 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16368 event pairs, 826 based on Foata normal form. 9/1810 useless extension candidates. Maximal degree in co-relation 4107. Up to 1550 conditions per place. [2024-11-12 20:48:29,508 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 51 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-11-12 20:48:29,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 657 flow [2024-11-12 20:48:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:48:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:48:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2024-11-12 20:48:29,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2024-11-12 20:48:29,510 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 340 flow. Second operand 10 states and 584 transitions. [2024-11-12 20:48:29,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 657 flow [2024-11-12 20:48:29,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 134 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:48:29,514 INFO L231 Difference]: Finished difference. Result has 112 places, 134 transitions, 603 flow [2024-11-12 20:48:29,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2024-11-12 20:48:29,515 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-12 20:48:29,516 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 603 flow [2024-11-12 20:48:29,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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) [2024-11-12 20:48:29,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:29,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:29,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 20:48:29,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:29,717 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:29,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash -694835737, now seen corresponding path program 1 times [2024-11-12 20:48:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:29,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675139516] [2024-11-12 20:48:29,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675139516] [2024-11-12 20:48:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675139516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:29,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:29,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717529845] [2024-11-12 20:48:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:29,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:29,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-11-12 20:48:29,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:29,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:29,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-11-12 20:48:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:30,166 INFO L124 PetriNetUnfolderBase]: 1160/2390 cut-off events. [2024-11-12 20:48:30,167 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-12 20:48:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2390 events. 1160/2390 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16250 event pairs, 826 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 4078. Up to 1563 conditions per place. [2024-11-12 20:48:30,191 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 71 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-11-12 20:48:30,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 755 flow [2024-11-12 20:48:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-12 20:48:30,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-12 20:48:30,193 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 603 flow. Second operand 4 states and 275 transitions. [2024-11-12 20:48:30,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 755 flow [2024-11-12 20:48:30,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 707 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-12 20:48:30,198 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 565 flow [2024-11-12 20:48:30,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-11-12 20:48:30,200 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-11-12 20:48:30,200 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 565 flow [2024-11-12 20:48:30,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:48:30,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:30,201 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-12 20:48:30,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:48:30,202 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:30,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash -270275348, now seen corresponding path program 2 times [2024-11-12 20:48:30,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:30,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678130616] [2024-11-12 20:48:30,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:30,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:30,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:30,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678130616] [2024-11-12 20:48:30,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678130616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086972396] [2024-11-12 20:48:30,381 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:30,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:30,383 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) [2024-11-12 20:48:30,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:48:30,465 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 20:48:30,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:30,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:48:30,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:48:30,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:48:30,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086972396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:30,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-12 20:48:30,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033385624] [2024-11-12 20:48:30,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:30,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:48:30,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:30,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:48:30,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-12 20:48:30,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:30,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 565 flow. Second operand has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 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) [2024-11-12 20:48:30,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:30,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:30,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:31,251 INFO L124 PetriNetUnfolderBase]: 1163/2401 cut-off events. [2024-11-12 20:48:31,251 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-11-12 20:48:31,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 2401 events. 1163/2401 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16320 event pairs, 826 based on Foata normal form. 4/1822 useless extension candidates. Maximal degree in co-relation 4065. Up to 1546 conditions per place. [2024-11-12 20:48:31,266 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 47 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2024-11-12 20:48:31,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 140 transitions, 808 flow [2024-11-12 20:48:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 20:48:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 20:48:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1271 transitions. [2024-11-12 20:48:31,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5043650793650793 [2024-11-12 20:48:31,270 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 565 flow. Second operand 24 states and 1271 transitions. [2024-11-12 20:48:31,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 140 transitions, 808 flow [2024-11-12 20:48:31,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 140 transitions, 780 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:48:31,274 INFO L231 Difference]: Finished difference. Result has 133 places, 140 transitions, 710 flow [2024-11-12 20:48:31,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=710, PETRI_PLACES=133, PETRI_TRANSITIONS=140} [2024-11-12 20:48:31,275 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 33 predicate places. [2024-11-12 20:48:31,275 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 140 transitions, 710 flow [2024-11-12 20:48:31,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 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) [2024-11-12 20:48:31,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:31,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:31,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 20:48:31,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:31,477 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:31,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:31,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1856241909, now seen corresponding path program 1 times [2024-11-12 20:48:31,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:31,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703026589] [2024-11-12 20:48:31,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:31,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703026589] [2024-11-12 20:48:31,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703026589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466482994] [2024-11-12 20:48:31,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:31,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:31,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:31,814 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) [2024-11-12 20:48:31,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:48:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:31,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 20:48:31,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:31,936 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 [2024-11-12 20:48:31,963 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 [2024-11-12 20:48:31,997 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:31,997 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 [2024-11-12 20:48:32,009 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 18 treesize of output 13 [2024-11-12 20:48:32,024 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 17 treesize of output 9 [2024-11-12 20:48:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:32,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:32,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:32,162 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 24 treesize of output 25 [2024-11-12 20:48:32,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:32,173 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 39 treesize of output 35 [2024-11-12 20:48:32,179 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 11 treesize of output 9 [2024-11-12 20:48:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466482994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:32,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:32,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-12 20:48:32,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901821031] [2024-11-12 20:48:32,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:32,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 20:48:32,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 20:48:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=121, Unknown=3, NotChecked=0, Total=156 [2024-11-12 20:48:32,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-12 20:48:32,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 140 transitions, 710 flow. Second operand has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 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) [2024-11-12 20:48:32,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:32,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-12 20:48:32,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:33,002 INFO L124 PetriNetUnfolderBase]: 1161/2404 cut-off events. [2024-11-12 20:48:33,002 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-11-12 20:48:33,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 2404 events. 1161/2404 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16311 event pairs, 826 based on Foata normal form. 0/1817 useless extension candidates. Maximal degree in co-relation 4195. Up to 1529 conditions per place. [2024-11-12 20:48:33,016 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 91 selfloop transitions, 27 changer transitions 0/148 dead transitions. [2024-11-12 20:48:33,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 148 transitions, 962 flow [2024-11-12 20:48:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:48:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:48:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 487 transitions. [2024-11-12 20:48:33,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42164502164502166 [2024-11-12 20:48:33,018 INFO L175 Difference]: Start difference. First operand has 133 places, 140 transitions, 710 flow. Second operand 11 states and 487 transitions. [2024-11-12 20:48:33,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 148 transitions, 962 flow [2024-11-12 20:48:33,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 148 transitions, 851 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-11-12 20:48:33,023 INFO L231 Difference]: Finished difference. Result has 132 places, 139 transitions, 651 flow [2024-11-12 20:48:33,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=651, PETRI_PLACES=132, PETRI_TRANSITIONS=139} [2024-11-12 20:48:33,024 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 32 predicate places. [2024-11-12 20:48:33,024 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 139 transitions, 651 flow [2024-11-12 20:48:33,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 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) [2024-11-12 20:48:33,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:33,025 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:33,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:48:33,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:33,229 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:33,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1708918148, now seen corresponding path program 1 times [2024-11-12 20:48:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:33,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508995739] [2024-11-12 20:48:33,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508995739] [2024-11-12 20:48:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508995739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099094870] [2024-11-12 20:48:33,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:33,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:33,500 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) [2024-11-12 20:48:33,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:48:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:33,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 20:48:33,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:33,600 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 [2024-11-12 20:48:33,620 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 [2024-11-12 20:48:33,655 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:33,655 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 [2024-11-12 20:48:33,664 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 [2024-11-12 20:48:33,673 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 [2024-11-12 20:48:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:33,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:33,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:33,773 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 22 treesize of output 23 [2024-11-12 20:48:33,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:33,789 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 33 treesize of output 29 [2024-11-12 20:48:33,796 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 9 treesize of output 7 [2024-11-12 20:48:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:33,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099094870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:33,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-12 20:48:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678823718] [2024-11-12 20:48:33,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:33,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 20:48:33,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 20:48:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2024-11-12 20:48:33,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-11-12 20:48:33,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 139 transitions, 651 flow. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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) [2024-11-12 20:48:33,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:33,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-11-12 20:48:33,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:34,478 INFO L124 PetriNetUnfolderBase]: 1161/2403 cut-off events. [2024-11-12 20:48:34,478 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-12 20:48:34,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2403 events. 1161/2403 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16301 event pairs, 826 based on Foata normal form. 1/1820 useless extension candidates. Maximal degree in co-relation 4171. Up to 1533 conditions per place. [2024-11-12 20:48:34,493 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 84 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-11-12 20:48:34,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 879 flow [2024-11-12 20:48:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:48:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:48:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2024-11-12 20:48:34,495 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4147186147186147 [2024-11-12 20:48:34,495 INFO L175 Difference]: Start difference. First operand has 132 places, 139 transitions, 651 flow. Second operand 11 states and 479 transitions. [2024-11-12 20:48:34,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 879 flow [2024-11-12 20:48:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 142 transitions, 869 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:34,500 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 693 flow [2024-11-12 20:48:34,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=693, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2024-11-12 20:48:34,501 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 39 predicate places. [2024-11-12 20:48:34,501 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 693 flow [2024-11-12 20:48:34,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 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) [2024-11-12 20:48:34,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:34,501 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:34,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 20:48:34,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:34,702 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:34,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1436854551, now seen corresponding path program 1 times [2024-11-12 20:48:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:34,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781760483] [2024-11-12 20:48:34,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:34,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:35,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781760483] [2024-11-12 20:48:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781760483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472924518] [2024-11-12 20:48:35,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:35,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:35,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:35,067 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) [2024-11-12 20:48:35,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:48:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:35,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-12 20:48:35,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:35,173 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 [2024-11-12 20:48:35,187 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 [2024-11-12 20:48:35,231 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:35,232 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 [2024-11-12 20:48:35,262 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 18 treesize of output 13 [2024-11-12 20:48:35,334 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-12 20:48:35,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 25 treesize of output 17 [2024-11-12 20:48:35,371 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 17 treesize of output 9 [2024-11-12 20:48:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:35,425 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:35,497 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_154 (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_154) c_~A~0.base) c_~A~0.offset)))) is different from false [2024-11-12 20:48:35,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:35,552 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 24 treesize of output 25 [2024-11-12 20:48:35,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:35,560 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 39 treesize of output 35 [2024-11-12 20:48:35,566 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 11 treesize of output 9 [2024-11-12 20:48:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-12 20:48:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472924518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:35,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:35,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-11-12 20:48:35,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91304233] [2024-11-12 20:48:35,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:35,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 20:48:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:35,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 20:48:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-12 20:48:35,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-12 20:48:35,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 693 flow. Second operand has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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) [2024-11-12 20:48:35,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:35,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-12 20:48:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:36,455 INFO L124 PetriNetUnfolderBase]: 1160/2399 cut-off events. [2024-11-12 20:48:36,456 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-11-12 20:48:36,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 2399 events. 1160/2399 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16280 event pairs, 826 based on Foata normal form. 1/1819 useless extension candidates. Maximal degree in co-relation 4186. Up to 1530 conditions per place. [2024-11-12 20:48:36,470 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 86 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-11-12 20:48:36,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 935 flow [2024-11-12 20:48:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 20:48:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 20:48:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 547 transitions. [2024-11-12 20:48:36,472 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37210884353741497 [2024-11-12 20:48:36,472 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 693 flow. Second operand 14 states and 547 transitions. [2024-11-12 20:48:36,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 935 flow [2024-11-12 20:48:36,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 877 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-12 20:48:36,477 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 705 flow [2024-11-12 20:48:36,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=705, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2024-11-12 20:48:36,477 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2024-11-12 20:48:36,477 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 705 flow [2024-11-12 20:48:36,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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) [2024-11-12 20:48:36,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:36,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:36,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 20:48:36,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:36,679 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:36,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1592819132, now seen corresponding path program 1 times [2024-11-12 20:48:36,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:36,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438243398] [2024-11-12 20:48:36,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:37,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438243398] [2024-11-12 20:48:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438243398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854399450] [2024-11-12 20:48:37,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:37,093 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) [2024-11-12 20:48:37,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:48:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:37,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-12 20:48:37,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:37,209 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 [2024-11-12 20:48:37,224 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 15 treesize of output 1 [2024-11-12 20:48:37,258 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:37,258 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 [2024-11-12 20:48:37,285 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 [2024-11-12 20:48:37,350 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-12 20:48:37,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 23 treesize of output 15 [2024-11-12 20:48:37,380 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 [2024-11-12 20:48:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:37,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:37,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:37,570 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 22 treesize of output 23 [2024-11-12 20:48:37,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:37,578 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 33 treesize of output 29 [2024-11-12 20:48:37,583 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 9 treesize of output 7 [2024-11-12 20:48:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854399450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:37,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 18 [2024-11-12 20:48:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019216134] [2024-11-12 20:48:37,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:37,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 20:48:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 20:48:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=312, Unknown=7, NotChecked=0, Total=380 [2024-11-12 20:48:37,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-12 20:48:37,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 705 flow. Second operand has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 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) [2024-11-12 20:48:37,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:37,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-12 20:48:37,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:38,643 INFO L124 PetriNetUnfolderBase]: 1160/2399 cut-off events. [2024-11-12 20:48:38,643 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-12 20:48:38,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4289 conditions, 2399 events. 1160/2399 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16329 event pairs, 826 based on Foata normal form. 4/1824 useless extension candidates. Maximal degree in co-relation 4213. Up to 1534 conditions per place. [2024-11-12 20:48:38,655 INFO L140 encePairwiseOnDemand]: 84/105 looper letters, 80 selfloop transitions, 35 changer transitions 1/142 dead transitions. [2024-11-12 20:48:38,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 142 transitions, 959 flow [2024-11-12 20:48:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:48:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:48:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-11-12 20:48:38,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35798319327731093 [2024-11-12 20:48:38,658 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 705 flow. Second operand 17 states and 639 transitions. [2024-11-12 20:48:38,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 142 transitions, 959 flow [2024-11-12 20:48:38,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 911 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-12 20:48:38,667 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 756 flow [2024-11-12 20:48:38,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=756, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2024-11-12 20:48:38,667 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 53 predicate places. [2024-11-12 20:48:38,667 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 756 flow [2024-11-12 20:48:38,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 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) [2024-11-12 20:48:38,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:38,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:38,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 20:48:38,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:38,869 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:38,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1944564241, now seen corresponding path program 1 times [2024-11-12 20:48:38,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:38,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589321469] [2024-11-12 20:48:38,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:38,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:48:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:38,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589321469] [2024-11-12 20:48:38,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589321469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:38,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:38,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:48:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605910980] [2024-11-12 20:48:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:38,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:48:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:48:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:48:38,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 105 [2024-11-12 20:48:38,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-11-12 20:48:38,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:38,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 105 [2024-11-12 20:48:38,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:39,356 INFO L124 PetriNetUnfolderBase]: 1160/2393 cut-off events. [2024-11-12 20:48:39,356 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-11-12 20:48:39,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 2393 events. 1160/2393 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16263 event pairs, 826 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 4249. Up to 1579 conditions per place. [2024-11-12 20:48:39,370 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 90 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-11-12 20:48:39,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 142 transitions, 980 flow [2024-11-12 20:48:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:48:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:48:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-12 20:48:39,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-11-12 20:48:39,373 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 756 flow. Second operand 6 states and 303 transitions. [2024-11-12 20:48:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 142 transitions, 980 flow [2024-11-12 20:48:39,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 889 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-12 20:48:39,379 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 735 flow [2024-11-12 20:48:39,379 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=735, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-12 20:48:39,380 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 46 predicate places. [2024-11-12 20:48:39,380 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 735 flow [2024-11-12 20:48:39,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-11-12 20:48:39,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:39,380 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:39,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:48:39,381 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:39,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1753780201, now seen corresponding path program 1 times [2024-11-12 20:48:39,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:39,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704794235] [2024-11-12 20:48:39,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:39,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:48:39,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704794235] [2024-11-12 20:48:39,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704794235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:39,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303668940] [2024-11-12 20:48:39,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:39,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:39,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:39,541 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) [2024-11-12 20:48:39,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:48:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:39,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 20:48:39,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 20:48:39,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 20:48:39,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303668940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:39,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-11-12 20:48:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009083499] [2024-11-12 20:48:39,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:39,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:48:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:48:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:48:39,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:39,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 735 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 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) [2024-11-12 20:48:39,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:39,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:39,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:40,626 INFO L124 PetriNetUnfolderBase]: 2306/4722 cut-off events. [2024-11-12 20:48:40,626 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-11-12 20:48:40,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 4722 events. 2306/4722 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34279 event pairs, 1652 based on Foata normal form. 2/3583 useless extension candidates. Maximal degree in co-relation 8214. Up to 1555 conditions per place. [2024-11-12 20:48:40,656 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 96 selfloop transitions, 54 changer transitions 0/193 dead transitions. [2024-11-12 20:48:40,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 193 transitions, 1260 flow [2024-11-12 20:48:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:48:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:48:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 648 transitions. [2024-11-12 20:48:40,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.561038961038961 [2024-11-12 20:48:40,659 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 735 flow. Second operand 11 states and 648 transitions. [2024-11-12 20:48:40,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 193 transitions, 1260 flow [2024-11-12 20:48:40,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 193 transitions, 1221 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-12 20:48:40,665 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 868 flow [2024-11-12 20:48:40,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=868, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2024-11-12 20:48:40,666 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 52 predicate places. [2024-11-12 20:48:40,666 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 868 flow [2024-11-12 20:48:40,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 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) [2024-11-12 20:48:40,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:40,667 INFO L206 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] [2024-11-12 20:48:40,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 20:48:40,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 20:48:40,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:40,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:40,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1423829912, now seen corresponding path program 1 times [2024-11-12 20:48:40,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:40,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083117395] [2024-11-12 20:48:40,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:48:40,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:40,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083117395] [2024-11-12 20:48:40,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083117395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:40,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408821593] [2024-11-12 20:48:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:40,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:40,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-12 20:48:40,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 868 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-11-12 20:48:40,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:40,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-12 20:48:40,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:41,702 INFO L124 PetriNetUnfolderBase]: 4920/8300 cut-off events. [2024-11-12 20:48:41,702 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-12 20:48:41,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15457 conditions, 8300 events. 4920/8300 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 57283 event pairs, 1728 based on Foata normal form. 244/6254 useless extension candidates. Maximal degree in co-relation 15406. Up to 5089 conditions per place. [2024-11-12 20:48:41,751 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 142 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2024-11-12 20:48:41,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 189 transitions, 1246 flow [2024-11-12 20:48:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-12 20:48:41,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-12 20:48:41,752 INFO L175 Difference]: Start difference. First operand has 152 places, 148 transitions, 868 flow. Second operand 4 states and 304 transitions. [2024-11-12 20:48:41,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 189 transitions, 1246 flow [2024-11-12 20:48:41,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 189 transitions, 1210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:48:41,758 INFO L231 Difference]: Finished difference. Result has 155 places, 151 transitions, 861 flow [2024-11-12 20:48:41,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=861, PETRI_PLACES=155, PETRI_TRANSITIONS=151} [2024-11-12 20:48:41,759 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 55 predicate places. [2024-11-12 20:48:41,759 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 151 transitions, 861 flow [2024-11-12 20:48:41,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-11-12 20:48:41,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:41,760 INFO L206 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] [2024-11-12 20:48:41,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:48:41,760 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:41,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1883356326, now seen corresponding path program 1 times [2024-11-12 20:48:41,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:41,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221843310] [2024-11-12 20:48:41,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:41,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:41,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221843310] [2024-11-12 20:48:41,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221843310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:41,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648142548] [2024-11-12 20:48:41,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:41,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:41,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:41,881 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) [2024-11-12 20:48:41,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 20:48:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:41,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:48:41,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:42,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:42,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648142548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:42,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:42,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:48:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674163475] [2024-11-12 20:48:42,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:42,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:48:42,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:42,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:48:42,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:48:42,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-11-12 20:48:42,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 151 transitions, 861 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 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) [2024-11-12 20:48:42,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:42,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-11-12 20:48:42,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:43,029 INFO L124 PetriNetUnfolderBase]: 2465/4967 cut-off events. [2024-11-12 20:48:43,030 INFO L125 PetriNetUnfolderBase]: For 1763/1944 co-relation queries the response was YES. [2024-11-12 20:48:43,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 4967 events. 2465/4967 cut-off events. For 1763/1944 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 34631 event pairs, 1594 based on Foata normal form. 0/3973 useless extension candidates. Maximal degree in co-relation 10203. Up to 2572 conditions per place. [2024-11-12 20:48:43,059 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 111 selfloop transitions, 53 changer transitions 0/206 dead transitions. [2024-11-12 20:48:43,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 206 transitions, 1410 flow [2024-11-12 20:48:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:48:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:48:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 641 transitions. [2024-11-12 20:48:43,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.554978354978355 [2024-11-12 20:48:43,062 INFO L175 Difference]: Start difference. First operand has 155 places, 151 transitions, 861 flow. Second operand 11 states and 641 transitions. [2024-11-12 20:48:43,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 206 transitions, 1410 flow [2024-11-12 20:48:43,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 206 transitions, 1401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:48:43,070 INFO L231 Difference]: Finished difference. Result has 166 places, 153 transitions, 980 flow [2024-11-12 20:48:43,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=980, PETRI_PLACES=166, PETRI_TRANSITIONS=153} [2024-11-12 20:48:43,071 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 66 predicate places. [2024-11-12 20:48:43,071 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 153 transitions, 980 flow [2024-11-12 20:48:43,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 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) [2024-11-12 20:48:43,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:43,071 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-11-12 20:48:43,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 20:48:43,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 20:48:43,276 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:43,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1115627331, now seen corresponding path program 2 times [2024-11-12 20:48:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:43,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351220010] [2024-11-12 20:48:43,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:48:43,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351220010] [2024-11-12 20:48:43,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351220010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692911277] [2024-11-12 20:48:43,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:43,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:43,594 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) [2024-11-12 20:48:43,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 20:48:43,694 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:48:43,695 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:43,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 20:48:43,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 20:48:43,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-12 20:48:43,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692911277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:43,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:43,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-11-12 20:48:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553613512] [2024-11-12 20:48:43,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:43,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 20:48:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 20:48:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-12 20:48:43,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:43,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 153 transitions, 980 flow. Second operand has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 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) [2024-11-12 20:48:43,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:43,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:43,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:44,722 INFO L124 PetriNetUnfolderBase]: 2362/4330 cut-off events. [2024-11-12 20:48:44,723 INFO L125 PetriNetUnfolderBase]: For 2096/2330 co-relation queries the response was YES. [2024-11-12 20:48:44,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10013 conditions, 4330 events. 2362/4330 cut-off events. For 2096/2330 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27200 event pairs, 1849 based on Foata normal form. 4/3494 useless extension candidates. Maximal degree in co-relation 9957. Up to 3319 conditions per place. [2024-11-12 20:48:44,751 INFO L140 encePairwiseOnDemand]: 93/105 looper letters, 50 selfloop transitions, 70 changer transitions 0/163 dead transitions. [2024-11-12 20:48:44,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 163 transitions, 1327 flow [2024-11-12 20:48:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 20:48:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 20:48:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1024 transitions. [2024-11-12 20:48:44,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5132832080200501 [2024-11-12 20:48:44,754 INFO L175 Difference]: Start difference. First operand has 166 places, 153 transitions, 980 flow. Second operand 19 states and 1024 transitions. [2024-11-12 20:48:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 163 transitions, 1327 flow [2024-11-12 20:48:44,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1170 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-12 20:48:44,815 INFO L231 Difference]: Finished difference. Result has 170 places, 163 transitions, 1070 flow [2024-11-12 20:48:44,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1070, PETRI_PLACES=170, PETRI_TRANSITIONS=163} [2024-11-12 20:48:44,817 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 70 predicate places. [2024-11-12 20:48:44,817 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 163 transitions, 1070 flow [2024-11-12 20:48:44,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 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) [2024-11-12 20:48:44,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:44,818 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:44,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 20:48:45,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 20:48:45,019 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:45,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash 221001158, now seen corresponding path program 1 times [2024-11-12 20:48:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528404688] [2024-11-12 20:48:45,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:48:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528404688] [2024-11-12 20:48:45,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528404688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:45,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290628174] [2024-11-12 20:48:45,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:45,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:45,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:45,143 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) [2024-11-12 20:48:45,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 20:48:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:45,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:48:45,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:48:45,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 20:48:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290628174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:45,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:45,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:48:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13578214] [2024-11-12 20:48:45,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:45,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:48:45,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:45,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:48:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:48:45,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-11-12 20:48:45,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 163 transitions, 1070 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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) [2024-11-12 20:48:45,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:45,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-11-12 20:48:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:45,955 INFO L124 PetriNetUnfolderBase]: 2034/4177 cut-off events. [2024-11-12 20:48:45,956 INFO L125 PetriNetUnfolderBase]: For 1620/1717 co-relation queries the response was YES. [2024-11-12 20:48:45,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8815 conditions, 4177 events. 2034/4177 cut-off events. For 1620/1717 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 30667 event pairs, 1376 based on Foata normal form. 38/3393 useless extension candidates. Maximal degree in co-relation 8763. Up to 2398 conditions per place. [2024-11-12 20:48:45,970 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 102 selfloop transitions, 62 changer transitions 0/207 dead transitions. [2024-11-12 20:48:45,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 207 transitions, 1571 flow [2024-11-12 20:48:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:48:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 20:48:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2024-11-12 20:48:45,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5593073593073593 [2024-11-12 20:48:45,972 INFO L175 Difference]: Start difference. First operand has 170 places, 163 transitions, 1070 flow. Second operand 11 states and 646 transitions. [2024-11-12 20:48:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 207 transitions, 1571 flow [2024-11-12 20:48:45,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 207 transitions, 1385 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-12 20:48:45,984 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1029 flow [2024-11-12 20:48:45,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1029, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-11-12 20:48:45,985 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 71 predicate places. [2024-11-12 20:48:45,985 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1029 flow [2024-11-12 20:48:45,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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) [2024-11-12 20:48:45,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:45,986 INFO L206 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] [2024-11-12 20:48:46,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 20:48:46,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 20:48:46,187 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:46,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1981412927, now seen corresponding path program 1 times [2024-11-12 20:48:46,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:46,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854317582] [2024-11-12 20:48:46,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:46,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-12 20:48:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:46,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854317582] [2024-11-12 20:48:46,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854317582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:48:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:48:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:48:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843487207] [2024-11-12 20:48:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:48:46,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:48:46,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:48:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:48:46,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-12 20:48:46,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1029 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2024-11-12 20:48:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-12 20:48:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:47,182 INFO L124 PetriNetUnfolderBase]: 4681/8320 cut-off events. [2024-11-12 20:48:47,182 INFO L125 PetriNetUnfolderBase]: For 5671/5961 co-relation queries the response was YES. [2024-11-12 20:48:47,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 8320 events. 4681/8320 cut-off events. For 5671/5961 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 57964 event pairs, 2384 based on Foata normal form. 153/6831 useless extension candidates. Maximal degree in co-relation 19238. Up to 4300 conditions per place. [2024-11-12 20:48:47,247 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 183 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-11-12 20:48:47,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 226 transitions, 1642 flow [2024-11-12 20:48:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:48:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:48:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-11-12 20:48:47,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-12 20:48:47,249 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1029 flow. Second operand 4 states and 304 transitions. [2024-11-12 20:48:47,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 226 transitions, 1642 flow [2024-11-12 20:48:47,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 226 transitions, 1525 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-12 20:48:47,263 INFO L231 Difference]: Finished difference. Result has 168 places, 167 transitions, 934 flow [2024-11-12 20:48:47,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=934, PETRI_PLACES=168, PETRI_TRANSITIONS=167} [2024-11-12 20:48:47,264 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 68 predicate places. [2024-11-12 20:48:47,264 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 167 transitions, 934 flow [2024-11-12 20:48:47,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2024-11-12 20:48:47,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:47,265 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:47,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:48:47,265 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:47,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348615, now seen corresponding path program 1 times [2024-11-12 20:48:47,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:47,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628374933] [2024-11-12 20:48:47,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:47,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628374933] [2024-11-12 20:48:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628374933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303717405] [2024-11-12 20:48:47,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:47,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:47,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:47,970 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) [2024-11-12 20:48:47,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 20:48:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:48,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-12 20:48:48,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:48,108 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 [2024-11-12 20:48:48,176 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 19 treesize of output 1 [2024-11-12 20:48:48,215 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:48,215 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 [2024-11-12 20:48:48,242 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 [2024-11-12 20:48:48,257 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 [2024-11-12 20:48:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-12 20:48:48,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:48,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:48,499 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 [2024-11-12 20:48:48,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:48,508 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 43 treesize of output 37 [2024-11-12 20:48:48,514 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 9 [2024-11-12 20:48:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-12 20:48:48,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303717405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:48,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:48,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-11-12 20:48:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255652051] [2024-11-12 20:48:48,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:48,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:48:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:48,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:48:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=674, Unknown=6, NotChecked=0, Total=756 [2024-11-12 20:48:49,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-12 20:48:49,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 167 transitions, 934 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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) [2024-11-12 20:48:49,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:49,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-12 20:48:49,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:51,358 INFO L124 PetriNetUnfolderBase]: 7312/11881 cut-off events. [2024-11-12 20:48:51,358 INFO L125 PetriNetUnfolderBase]: For 9753/11011 co-relation queries the response was YES. [2024-11-12 20:48:51,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30460 conditions, 11881 events. 7312/11881 cut-off events. For 9753/11011 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 77319 event pairs, 1863 based on Foata normal form. 243/9368 useless extension candidates. Maximal degree in co-relation 30379. Up to 3441 conditions per place. [2024-11-12 20:48:51,423 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 177 selfloop transitions, 61 changer transitions 0/276 dead transitions. [2024-11-12 20:48:51,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 276 transitions, 1867 flow [2024-11-12 20:48:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 20:48:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-12 20:48:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1020 transitions. [2024-11-12 20:48:51,427 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-11-12 20:48:51,427 INFO L175 Difference]: Start difference. First operand has 168 places, 167 transitions, 934 flow. Second operand 20 states and 1020 transitions. [2024-11-12 20:48:51,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 276 transitions, 1867 flow [2024-11-12 20:48:51,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 276 transitions, 1857 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:48:51,446 INFO L231 Difference]: Finished difference. Result has 188 places, 178 transitions, 1155 flow [2024-11-12 20:48:51,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1155, PETRI_PLACES=188, PETRI_TRANSITIONS=178} [2024-11-12 20:48:51,447 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 88 predicate places. [2024-11-12 20:48:51,447 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 178 transitions, 1155 flow [2024-11-12 20:48:51,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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) [2024-11-12 20:48:51,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:51,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:51,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 20:48:51,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:51,649 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:51,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348614, now seen corresponding path program 1 times [2024-11-12 20:48:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:51,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523144234] [2024-11-12 20:48:51,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:48:52,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:52,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523144234] [2024-11-12 20:48:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523144234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:52,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114490784] [2024-11-12 20:48:52,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:52,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:52,508 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) [2024-11-12 20:48:52,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 20:48:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:52,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 20:48:52,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:52,648 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 [2024-11-12 20:48:52,698 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 19 treesize of output 1 [2024-11-12 20:48:52,735 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:52,735 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 [2024-11-12 20:48:52,758 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 18 treesize of output 13 [2024-11-12 20:48:52,771 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 18 treesize of output 13 [2024-11-12 20:48:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-12 20:48:52,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:52,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:52,977 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 24 treesize of output 25 [2024-11-12 20:48:52,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:52,985 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 37 treesize of output 31 [2024-11-12 20:48:52,989 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 11 treesize of output 7 [2024-11-12 20:48:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-12 20:48:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114490784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:53,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-11-12 20:48:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593800285] [2024-11-12 20:48:53,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:53,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:48:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:53,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:48:53,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=667, Unknown=6, NotChecked=0, Total=756 [2024-11-12 20:48:53,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-12 20:48:53,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 178 transitions, 1155 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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) [2024-11-12 20:48:53,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:53,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-12 20:48:53,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:55,423 INFO L124 PetriNetUnfolderBase]: 7004/11602 cut-off events. [2024-11-12 20:48:55,423 INFO L125 PetriNetUnfolderBase]: For 11913/12956 co-relation queries the response was YES. [2024-11-12 20:48:55,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32782 conditions, 11602 events. 7004/11602 cut-off events. For 11913/12956 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 76661 event pairs, 1898 based on Foata normal form. 191/9533 useless extension candidates. Maximal degree in co-relation 32697. Up to 3227 conditions per place. [2024-11-12 20:48:55,490 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 159 selfloop transitions, 61 changer transitions 0/258 dead transitions. [2024-11-12 20:48:55,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 258 transitions, 1916 flow [2024-11-12 20:48:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 20:48:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 20:48:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 961 transitions. [2024-11-12 20:48:55,492 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4817042606516291 [2024-11-12 20:48:55,492 INFO L175 Difference]: Start difference. First operand has 188 places, 178 transitions, 1155 flow. Second operand 19 states and 961 transitions. [2024-11-12 20:48:55,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 258 transitions, 1916 flow [2024-11-12 20:48:55,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 258 transitions, 1860 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-12 20:48:55,514 INFO L231 Difference]: Finished difference. Result has 201 places, 177 transitions, 1217 flow [2024-11-12 20:48:55,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1217, PETRI_PLACES=201, PETRI_TRANSITIONS=177} [2024-11-12 20:48:55,515 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 101 predicate places. [2024-11-12 20:48:55,516 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 177 transitions, 1217 flow [2024-11-12 20:48:55,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 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) [2024-11-12 20:48:55,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:55,517 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:55,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 20:48:55,720 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,SelfDestructingSolverStorable19 [2024-11-12 20:48:55,721 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:48:55,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:48:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348612, now seen corresponding path program 2 times [2024-11-12 20:48:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:48:55,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15612127] [2024-11-12 20:48:55,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:48:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:48:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:48:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:56,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:48:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15612127] [2024-11-12 20:48:56,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15612127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:48:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076428529] [2024-11-12 20:48:56,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:48:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:48:56,465 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) [2024-11-12 20:48:56,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 20:48:56,609 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:48:56,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:48:56,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-12 20:48:56,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:48:56,621 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 [2024-11-12 20:48:56,686 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 19 treesize of output 1 [2024-11-12 20:48:56,735 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-12 20:48:56,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-12 20:48:56,769 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 [2024-11-12 20:48:56,789 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 [2024-11-12 20:48:56,829 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:48:56,829 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 [2024-11-12 20:48:56,858 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 [2024-11-12 20:48:56,870 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 [2024-11-12 20:48:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:56,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:48:57,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:57,199 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 [2024-11-12 20:48:57,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:48:57,211 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 81 treesize of output 75 [2024-11-12 20:48:57,217 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 62 treesize of output 54 [2024-11-12 20:48:57,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-12 20:48:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:48:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076428529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:48:57,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:48:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-12 20:48:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129206243] [2024-11-12 20:48:57,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:48:57,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 20:48:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:48:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 20:48:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=606, Unknown=8, NotChecked=0, Total=702 [2024-11-12 20:48:57,670 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-12 20:48:57,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 177 transitions, 1217 flow. Second operand has 27 states, 27 states have (on average 47.03703703703704) internal successors, (1270), 27 states have internal predecessors, (1270), 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) [2024-11-12 20:48:57,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:48:57,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-12 20:48:57,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:48:59,666 INFO L124 PetriNetUnfolderBase]: 5352/9247 cut-off events. [2024-11-12 20:48:59,666 INFO L125 PetriNetUnfolderBase]: For 11390/12278 co-relation queries the response was YES. [2024-11-12 20:48:59,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27024 conditions, 9247 events. 5352/9247 cut-off events. For 11390/12278 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 62124 event pairs, 2587 based on Foata normal form. 178/8070 useless extension candidates. Maximal degree in co-relation 26938. Up to 4555 conditions per place. [2024-11-12 20:48:59,717 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 160 selfloop transitions, 55 changer transitions 0/254 dead transitions. [2024-11-12 20:48:59,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 254 transitions, 1962 flow [2024-11-12 20:48:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:48:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:48:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2024-11-12 20:48:59,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5073015873015873 [2024-11-12 20:48:59,719 INFO L175 Difference]: Start difference. First operand has 201 places, 177 transitions, 1217 flow. Second operand 15 states and 799 transitions. [2024-11-12 20:48:59,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 254 transitions, 1962 flow [2024-11-12 20:48:59,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 254 transitions, 1860 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-11-12 20:48:59,736 INFO L231 Difference]: Finished difference. Result has 198 places, 176 transitions, 1221 flow [2024-11-12 20:48:59,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1221, PETRI_PLACES=198, PETRI_TRANSITIONS=176} [2024-11-12 20:48:59,737 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 98 predicate places. [2024-11-12 20:48:59,737 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 176 transitions, 1221 flow [2024-11-12 20:48:59,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 47.03703703703704) internal successors, (1270), 27 states have internal predecessors, (1270), 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) [2024-11-12 20:48:59,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:48:59,738 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:48:59,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 20:48:59,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:48:59,942 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:00,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348611, now seen corresponding path program 1 times [2024-11-12 20:49:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:00,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124875901] [2024-11-12 20:49:00,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:00,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:49:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:00,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124875901] [2024-11-12 20:49:00,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124875901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:49:00,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847346063] [2024-11-12 20:49:00,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:00,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:00,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:49:00,565 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) [2024-11-12 20:49:00,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 20:49:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:00,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-12 20:49:00,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:49:00,701 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 [2024-11-12 20:49:00,751 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 19 treesize of output 1 [2024-11-12 20:49:00,778 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-12 20:49:00,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-12 20:49:00,797 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 18 treesize of output 13 [2024-11-12 20:49:00,813 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 18 treesize of output 13 [2024-11-12 20:49:00,847 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 20:49:00,848 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 [2024-11-12 20:49:00,866 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 18 treesize of output 13 [2024-11-12 20:49:00,874 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 18 treesize of output 13 [2024-11-12 20:49:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:49:00,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:49:01,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:49:01,126 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 [2024-11-12 20:49:01,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 20:49:01,135 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 71 treesize of output 65 [2024-11-12 20:49:01,140 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 54 treesize of output 46 [2024-11-12 20:49:01,145 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 24 treesize of output 20 [2024-11-12 20:49:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 20:49:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847346063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:49:01,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:49:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-12 20:49:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709313549] [2024-11-12 20:49:01,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:49:01,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 20:49:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 20:49:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=652, Unknown=4, NotChecked=0, Total=756 [2024-11-12 20:49:03,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-11-12 20:49:03,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 176 transitions, 1221 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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) [2024-11-12 20:49:03,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:03,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-11-12 20:49:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:05,703 INFO L124 PetriNetUnfolderBase]: 5044/8588 cut-off events. [2024-11-12 20:49:05,703 INFO L125 PetriNetUnfolderBase]: For 11098/12031 co-relation queries the response was YES. [2024-11-12 20:49:05,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25366 conditions, 8588 events. 5044/8588 cut-off events. For 11098/12031 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 56483 event pairs, 2775 based on Foata normal form. 204/7871 useless extension candidates. Maximal degree in co-relation 25279. Up to 4555 conditions per place. [2024-11-12 20:49:05,741 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 159 selfloop transitions, 55 changer transitions 0/253 dead transitions. [2024-11-12 20:49:05,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 253 transitions, 1964 flow [2024-11-12 20:49:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 20:49:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 20:49:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2024-11-12 20:49:05,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-12 20:49:05,743 INFO L175 Difference]: Start difference. First operand has 198 places, 176 transitions, 1221 flow. Second operand 15 states and 798 transitions. [2024-11-12 20:49:05,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 253 transitions, 1964 flow [2024-11-12 20:49:05,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 253 transitions, 1845 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-12 20:49:05,755 INFO L231 Difference]: Finished difference. Result has 199 places, 175 transitions, 1208 flow [2024-11-12 20:49:05,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1208, PETRI_PLACES=199, PETRI_TRANSITIONS=175} [2024-11-12 20:49:05,755 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 99 predicate places. [2024-11-12 20:49:05,755 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 175 transitions, 1208 flow [2024-11-12 20:49:05,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 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) [2024-11-12 20:49:05,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:05,756 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:49:05,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 20:49:05,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:05,957 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:05,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1001792412, now seen corresponding path program 2 times [2024-11-12 20:49:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108255934] [2024-11-12 20:49:05,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:49:06,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:06,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108255934] [2024-11-12 20:49:06,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108255934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:49:06,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933264081] [2024-11-12 20:49:06,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:49:06,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:49:06,060 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) [2024-11-12 20:49:06,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 20:49:06,193 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 20:49:06,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 20:49:06,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:49:06,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:49:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:49:06,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:49:06,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933264081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:49:06,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:49:06,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-12 20:49:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742021379] [2024-11-12 20:49:06,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:49:06,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:49:06,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:49:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:49:06,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-12 20:49:06,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 175 transitions, 1208 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2024-11-12 20:49:06,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:06,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-12 20:49:06,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:07,255 INFO L124 PetriNetUnfolderBase]: 4493/7860 cut-off events. [2024-11-12 20:49:07,255 INFO L125 PetriNetUnfolderBase]: For 12348/12947 co-relation queries the response was YES. [2024-11-12 20:49:07,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23605 conditions, 7860 events. 4493/7860 cut-off events. For 12348/12947 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 53859 event pairs, 937 based on Foata normal form. 362/7185 useless extension candidates. Maximal degree in co-relation 23522. Up to 2446 conditions per place. [2024-11-12 20:49:07,302 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 219 selfloop transitions, 9 changer transitions 0/270 dead transitions. [2024-11-12 20:49:07,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 270 transitions, 2174 flow [2024-11-12 20:49:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:49:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:49:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2024-11-12 20:49:07,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.707936507936508 [2024-11-12 20:49:07,303 INFO L175 Difference]: Start difference. First operand has 199 places, 175 transitions, 1208 flow. Second operand 6 states and 446 transitions. [2024-11-12 20:49:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 270 transitions, 2174 flow [2024-11-12 20:49:07,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 270 transitions, 2033 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-12 20:49:07,316 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1113 flow [2024-11-12 20:49:07,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1113, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2024-11-12 20:49:07,317 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 90 predicate places. [2024-11-12 20:49:07,317 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1113 flow [2024-11-12 20:49:07,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2024-11-12 20:49:07,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:07,317 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:49:07,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-12 20:49:07,518 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,SelfDestructingSolverStorable22 [2024-11-12 20:49:07,518 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:07,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -976053663, now seen corresponding path program 1 times [2024-11-12 20:49:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546435910] [2024-11-12 20:49:07,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:49:07,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546435910] [2024-11-12 20:49:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546435910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:49:07,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:49:07,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:49:07,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155276062] [2024-11-12 20:49:07,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:49:07,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:49:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:49:07,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:49:07,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-11-12 20:49:07,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 1113 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2024-11-12 20:49:07,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:07,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-11-12 20:49:07,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:08,439 INFO L124 PetriNetUnfolderBase]: 5020/8348 cut-off events. [2024-11-12 20:49:08,440 INFO L125 PetriNetUnfolderBase]: For 14718/15383 co-relation queries the response was YES. [2024-11-12 20:49:08,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26725 conditions, 8348 events. 5020/8348 cut-off events. For 14718/15383 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 53947 event pairs, 3105 based on Foata normal form. 405/7938 useless extension candidates. Maximal degree in co-relation 26644. Up to 5693 conditions per place. [2024-11-12 20:49:08,512 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 161 selfloop transitions, 8 changer transitions 0/209 dead transitions. [2024-11-12 20:49:08,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 209 transitions, 1625 flow [2024-11-12 20:49:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:49:08,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:49:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-11-12 20:49:08,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-11-12 20:49:08,514 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1113 flow. Second operand 4 states and 288 transitions. [2024-11-12 20:49:08,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 209 transitions, 1625 flow [2024-11-12 20:49:08,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 209 transitions, 1543 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-12 20:49:08,530 INFO L231 Difference]: Finished difference. Result has 190 places, 175 transitions, 1116 flow [2024-11-12 20:49:08,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1116, PETRI_PLACES=190, PETRI_TRANSITIONS=175} [2024-11-12 20:49:08,531 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 90 predicate places. [2024-11-12 20:49:08,531 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 175 transitions, 1116 flow [2024-11-12 20:49:08,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2024-11-12 20:49:08,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:08,532 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:49:08,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 20:49:08,532 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:08,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash -990792584, now seen corresponding path program 1 times [2024-11-12 20:49:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:08,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886198016] [2024-11-12 20:49:08,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:49:08,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886198016] [2024-11-12 20:49:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886198016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:49:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421761701] [2024-11-12 20:49:08,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:49:08,618 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) [2024-11-12 20:49:08,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 20:49:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:08,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:49:08,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:49:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:49:08,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:49:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-12 20:49:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421761701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:49:08,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:49:08,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 20:49:08,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883794184] [2024-11-12 20:49:08,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:49:08,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:49:08,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:08,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:49:08,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:49:08,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-11-12 20:49:08,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 175 transitions, 1116 flow. Second operand has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 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) [2024-11-12 20:49:08,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:08,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-11-12 20:49:08,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:10,265 INFO L124 PetriNetUnfolderBase]: 7944/12862 cut-off events. [2024-11-12 20:49:10,265 INFO L125 PetriNetUnfolderBase]: For 19394/20619 co-relation queries the response was YES. [2024-11-12 20:49:10,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37989 conditions, 12862 events. 7944/12862 cut-off events. For 19394/20619 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 87994 event pairs, 2478 based on Foata normal form. 899/11935 useless extension candidates. Maximal degree in co-relation 37907. Up to 5262 conditions per place. [2024-11-12 20:49:10,352 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 314 selfloop transitions, 15 changer transitions 0/372 dead transitions. [2024-11-12 20:49:10,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 372 transitions, 2814 flow [2024-11-12 20:49:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:49:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:49:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 745 transitions. [2024-11-12 20:49:10,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-11-12 20:49:10,353 INFO L175 Difference]: Start difference. First operand has 190 places, 175 transitions, 1116 flow. Second operand 10 states and 745 transitions. [2024-11-12 20:49:10,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 372 transitions, 2814 flow [2024-11-12 20:49:10,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 372 transitions, 2779 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:49:10,374 INFO L231 Difference]: Finished difference. Result has 201 places, 184 transitions, 1187 flow [2024-11-12 20:49:10,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1187, PETRI_PLACES=201, PETRI_TRANSITIONS=184} [2024-11-12 20:49:10,374 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 101 predicate places. [2024-11-12 20:49:10,375 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 184 transitions, 1187 flow [2024-11-12 20:49:10,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 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) [2024-11-12 20:49:10,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:10,375 INFO L206 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, 1] [2024-11-12 20:49:10,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-12 20:49:10,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:10,576 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:10,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash -406020370, now seen corresponding path program 1 times [2024-11-12 20:49:10,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:10,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107905293] [2024-11-12 20:49:10,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:49:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107905293] [2024-11-12 20:49:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107905293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:49:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:49:10,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:49:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944005149] [2024-11-12 20:49:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:49:10,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:49:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:49:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:49:10,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-12 20:49:10,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 184 transitions, 1187 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-12 20:49:10,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:10,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-12 20:49:10,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:13,944 INFO L124 PetriNetUnfolderBase]: 14924/24914 cut-off events. [2024-11-12 20:49:13,944 INFO L125 PetriNetUnfolderBase]: For 44571/46754 co-relation queries the response was YES. [2024-11-12 20:49:14,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80389 conditions, 24914 events. 14924/24914 cut-off events. For 44571/46754 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 192761 event pairs, 11364 based on Foata normal form. 595/23082 useless extension candidates. Maximal degree in co-relation 80304. Up to 10246 conditions per place. [2024-11-12 20:49:14,151 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 180 selfloop transitions, 18 changer transitions 0/237 dead transitions. [2024-11-12 20:49:14,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 237 transitions, 1888 flow [2024-11-12 20:49:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:49:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:49:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-11-12 20:49:14,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5961904761904762 [2024-11-12 20:49:14,152 INFO L175 Difference]: Start difference. First operand has 201 places, 184 transitions, 1187 flow. Second operand 5 states and 313 transitions. [2024-11-12 20:49:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 237 transitions, 1888 flow [2024-11-12 20:49:14,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 237 transitions, 1862 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-12 20:49:14,258 INFO L231 Difference]: Finished difference. Result has 204 places, 186 transitions, 1240 flow [2024-11-12 20:49:14,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1240, PETRI_PLACES=204, PETRI_TRANSITIONS=186} [2024-11-12 20:49:14,259 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 104 predicate places. [2024-11-12 20:49:14,259 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 186 transitions, 1240 flow [2024-11-12 20:49:14,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-12 20:49:14,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:14,260 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:49:14,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-12 20:49:14,260 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:14,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash -684955920, now seen corresponding path program 1 times [2024-11-12 20:49:14,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:14,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966174538] [2024-11-12 20:49:14,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:49:14,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966174538] [2024-11-12 20:49:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966174538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:49:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549375172] [2024-11-12 20:49:14,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:14,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:49:14,546 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) [2024-11-12 20:49:14,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 20:49:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:14,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 20:49:14,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:49:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:49:14,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:49:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-12 20:49:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549375172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:49:14,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:49:14,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-12 20:49:14,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685785889] [2024-11-12 20:49:14,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:49:14,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 20:49:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:14,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 20:49:14,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-12 20:49:15,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-11-12 20:49:15,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 186 transitions, 1240 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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) [2024-11-12 20:49:15,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:15,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-11-12 20:49:15,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:20,871 INFO L124 PetriNetUnfolderBase]: 29572/47428 cut-off events. [2024-11-12 20:49:20,871 INFO L125 PetriNetUnfolderBase]: For 70976/73736 co-relation queries the response was YES. [2024-11-12 20:49:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145290 conditions, 47428 events. 29572/47428 cut-off events. For 70976/73736 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 363957 event pairs, 17624 based on Foata normal form. 1320/45236 useless extension candidates. Maximal degree in co-relation 145201. Up to 27414 conditions per place. [2024-11-12 20:49:21,277 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 205 selfloop transitions, 76 changer transitions 0/320 dead transitions. [2024-11-12 20:49:21,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 320 transitions, 2454 flow [2024-11-12 20:49:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 20:49:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 20:49:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 923 transitions. [2024-11-12 20:49:21,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170868347338936 [2024-11-12 20:49:21,279 INFO L175 Difference]: Start difference. First operand has 204 places, 186 transitions, 1240 flow. Second operand 17 states and 923 transitions. [2024-11-12 20:49:21,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 320 transitions, 2454 flow [2024-11-12 20:49:21,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 320 transitions, 2446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:49:21,492 INFO L231 Difference]: Finished difference. Result has 223 places, 191 transitions, 1466 flow [2024-11-12 20:49:21,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1466, PETRI_PLACES=223, PETRI_TRANSITIONS=191} [2024-11-12 20:49:21,492 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 123 predicate places. [2024-11-12 20:49:21,492 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 191 transitions, 1466 flow [2024-11-12 20:49:21,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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) [2024-11-12 20:49:21,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:21,493 INFO L206 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, 1, 1] [2024-11-12 20:49:21,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-12 20:49:21,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 20:49:21,694 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:21,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:21,694 INFO L85 PathProgramCache]: Analyzing trace with hash -615621661, now seen corresponding path program 1 times [2024-11-12 20:49:21,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:21,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287563328] [2024-11-12 20:49:21,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:21,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:49:21,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:21,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287563328] [2024-11-12 20:49:21,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287563328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:49:21,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:49:21,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 20:49:21,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524818203] [2024-11-12 20:49:21,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:49:21,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 20:49:21,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 20:49:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 20:49:22,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-11-12 20:49:22,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 191 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 47.714285714285715) internal successors, (334), 7 states have internal predecessors, (334), 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) [2024-11-12 20:49:22,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:22,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-11-12 20:49:22,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:27,339 INFO L124 PetriNetUnfolderBase]: 24136/40339 cut-off events. [2024-11-12 20:49:27,340 INFO L125 PetriNetUnfolderBase]: For 100434/104684 co-relation queries the response was YES. [2024-11-12 20:49:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135734 conditions, 40339 events. 24136/40339 cut-off events. For 100434/104684 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 329112 event pairs, 6924 based on Foata normal form. 1261/38477 useless extension candidates. Maximal degree in co-relation 135631. Up to 25345 conditions per place. [2024-11-12 20:49:27,657 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 177 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-11-12 20:49:27,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 243 transitions, 2226 flow [2024-11-12 20:49:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:49:27,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:49:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 348 transitions. [2024-11-12 20:49:27,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-11-12 20:49:27,658 INFO L175 Difference]: Start difference. First operand has 223 places, 191 transitions, 1466 flow. Second operand 6 states and 348 transitions. [2024-11-12 20:49:27,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 243 transitions, 2226 flow [2024-11-12 20:49:28,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 243 transitions, 2086 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-12 20:49:28,040 INFO L231 Difference]: Finished difference. Result has 220 places, 200 transitions, 1508 flow [2024-11-12 20:49:28,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1508, PETRI_PLACES=220, PETRI_TRANSITIONS=200} [2024-11-12 20:49:28,040 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 120 predicate places. [2024-11-12 20:49:28,040 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 200 transitions, 1508 flow [2024-11-12 20:49:28,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.714285714285715) internal successors, (334), 7 states have internal predecessors, (334), 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) [2024-11-12 20:49:28,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:28,041 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:49:28,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-12 20:49:28,041 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:28,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash 285675810, now seen corresponding path program 1 times [2024-11-12 20:49:28,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:28,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096025168] [2024-11-12 20:49:28,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:28,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 20:49:28,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:28,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096025168] [2024-11-12 20:49:28,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096025168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:49:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104094802] [2024-11-12 20:49:28,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:28,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:49:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:49:28,151 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) [2024-11-12 20:49:28,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 20:49:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:28,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 20:49:28,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:49:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 20:49:28,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:49:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-12 20:49:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104094802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:49:28,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:49:28,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 20:49:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944746141] [2024-11-12 20:49:28,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:49:28,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 20:49:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 20:49:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 20:49:28,479 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-11-12 20:49:28,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 200 transitions, 1508 flow. Second operand has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 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) [2024-11-12 20:49:28,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:28,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-11-12 20:49:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:49:35,248 INFO L124 PetriNetUnfolderBase]: 28968/48118 cut-off events. [2024-11-12 20:49:35,248 INFO L125 PetriNetUnfolderBase]: For 117561/121172 co-relation queries the response was YES. [2024-11-12 20:49:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160163 conditions, 48118 events. 28968/48118 cut-off events. For 117561/121172 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 389087 event pairs, 17158 based on Foata normal form. 1238/43249 useless extension candidates. Maximal degree in co-relation 160063. Up to 30401 conditions per place. [2024-11-12 20:49:35,716 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 169 selfloop transitions, 65 changer transitions 0/281 dead transitions. [2024-11-12 20:49:35,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 281 transitions, 2538 flow [2024-11-12 20:49:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 20:49:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 20:49:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 695 transitions. [2024-11-12 20:49:35,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-11-12 20:49:35,717 INFO L175 Difference]: Start difference. First operand has 220 places, 200 transitions, 1508 flow. Second operand 12 states and 695 transitions. [2024-11-12 20:49:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 281 transitions, 2538 flow [2024-11-12 20:49:35,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 281 transitions, 2525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:49:35,935 INFO L231 Difference]: Finished difference. Result has 233 places, 202 transitions, 1687 flow [2024-11-12 20:49:35,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1687, PETRI_PLACES=233, PETRI_TRANSITIONS=202} [2024-11-12 20:49:35,936 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 133 predicate places. [2024-11-12 20:49:35,936 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 202 transitions, 1687 flow [2024-11-12 20:49:35,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 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) [2024-11-12 20:49:35,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:49:35,936 INFO L206 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, 1, 1, 1] [2024-11-12 20:49:35,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-12 20:49:36,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-12 20:49:36,137 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-11-12 20:49:36,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:49:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1163021405, now seen corresponding path program 1 times [2024-11-12 20:49:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:49:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514175103] [2024-11-12 20:49:36,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:49:36,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:49:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:49:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 20:49:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:49:36,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514175103] [2024-11-12 20:49:36,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514175103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:49:36,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:49:36,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 20:49:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939106302] [2024-11-12 20:49:36,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:49:36,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 20:49:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:49:36,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:49:36,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:49:36,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-11-12 20:49:36,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 202 transitions, 1687 flow. Second operand has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 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) [2024-11-12 20:49:36,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:49:36,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-11-12 20:49:36,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand